Tag Archives: roller chain

China supplier Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Main products
Coupling refers to a device that connects 2 shafts or shafts and rotating parts, rotates together during the transmission of motion and power, and does not disengage under normal conditions. Sometimes it is also used as a safety device to prevent the connected parts from bearing excessive load, which plays the role of overload protection.

Couplings can be divided into rigid couplings and flexible couplings.
Rigid couplings do not have buffering property and the ability to compensate the relative displacement of 2 axes. It is required that the 2 axes be strictly aligned. However, such couplings are simple in structure, low in manufacturing cost, convenient in assembly and disassembly, and maintenance, which can ensure that the 2 axes are relatively neutral, have large transmission torque, and are widely used. Commonly used are flange coupling, sleeve coupling and jacket coupling.
Flexible coupling can also be divided into flexible coupling without elastic element and flexible coupling with elastic element. The former type only has the ability to compensate the relative displacement of 2 axes, but cannot cushion and reduce vibration. Common types include slider coupling, gear coupling, universal coupling and chain coupling; The latter type contains elastic elements. In addition to the ability to compensate the relative displacement of 2 axes, it also has the functions of buffering and vibration reduction. However, due to the strength of elastic elements, the transmitted torque is generally inferior to that of flexible couplings without elastic elements. Common types include elastic sleeve pin couplings, elastic pin couplings, quincunx couplings, tire type couplings, serpentine spring couplings, spring couplings, etc

Coupling performance

1) Mobility. The movability of the coupling refers to the ability to compensate the relative displacement of 2 rotating components. Factors such as manufacturing and installation errors between connected components, temperature changes during operation and deformation under load all put CHINAMFG requirements for mobility. The movable performance compensates or alleviates the additional load between shafts, bearings, couplings and other components caused by the relative displacement between rotating components.
(2) Buffering. For the occasions where the load is often started or the working load changes, the coupling shall be equipped with elastic elements that play the role of cushioning and vibration reduction to protect the prime mover and the working machine from little or no damage.
(3) Safe, reliable, with sufficient strength and service life.
(4) Simple structure, easy to assemble, disassemble and maintain.

How to select the appropriate coupling type

The following items should be considered when selecting the coupling type.
1. The size and nature of the required transmission torque, the requirements for buffering and damping functions, and whether resonance may occur.
2. The relative displacement of the axes of the 2 shafts is caused by manufacturing and assembly errors, shaft load and thermal expansion deformation, and relative movement between components.
3. Permissible overall dimensions and installation methods, and necessary operating space for assembly, adjustment and maintenance. For large couplings, they should be able to be disassembled without axial movement of the shaft.
In addition, the working environment, service life, lubrication, sealing, economy and other conditions should also be considered, and a suitable coupling type should be selected by referring to the characteristics of various couplings.

If you cannot determine the type, you can contact our professional engineer

Related products

 

Company Profile

 

Our Equipments

Main production equipment:
Large lathe, surface grinder, milling machine, gear shaper, spline milling machine, horizontal broaching machine, gear hobbing machine, shaper, slotting machine, bench drilling machine, radial drilling machine, boring machine, band sawing machine, horizontal lathe, end milling machine, crankshaft grinder, CNC milling machine, casting equipment, etc.
Inspection equipment:
Dynamic balance tester, high-speed intelligent carbon and sulfur analyzer, Blochon optical hardness tester, Leeb hardness tester, magnetic yoke flaw detector, special detection, modular fixture (self-made), etc.

Machining equipments
Heat equipment

 

Our Factory
Application – Photos from our partner customers

Company Profile
Our leading products are mechanical transmission basic parts – couplings, mainly including universal couplings, drum gear couplings, elastic couplings and other 3 categories of more than 30 series of varieties. It is widely used in metallurgical steel rolling, wind power, hydropower, mining, engineering machinery, petrochemical, lifting, paper making, rubber, rail transit, shipbuilding and marine engineering and other industries.
Our factory takes the basic parts of national standards as the benchmark, has more than 40 years of coupling production experience, takes “scientific management, pioneering and innovation, ensuring quality and customer satisfaction” as the quality policy, and aims to continuously provide users with satisfactory products and services. The production is guided by reasonable process, and the ISO9001:2015 quality management system standard is strictly implemented. We adhere to the principle of continuous improvement and innovation of coupling products. In recent years, it has successfully developed 10 national patent products such as SWF cross shaft universal coupling, among which the double cross shaft universal joint has won the national invention patent, SWF cross shaft universal coupling has won the new product award of China’s general mechanical parts coupling industry and the ZHangZhoug Province new product science and technology project.
Our factory has strong technical force, excellent process equipment, complete professional production equipment, perfect detection means, excellent after-sales service, various products and complete specifications. At the same time, we can provide the design and manufacturing of special non-standard products according to the needs of users. Our products sell well at home and abroad, and are trusted by the majority of users. We sincerely welcome friends from all walks of life at home and abroad to visit and negotiate for common development.p

  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

rubber coupling

Diagnosing and Troubleshooting Rubber Coupling Issues

Diagnosing and troubleshooting problems with rubber couplings in machinery systems involves a systematic approach:

  1. Visual Inspection: Check for signs of wear, cracking, or deformation in the rubber elements.
  2. Vibration Analysis: Monitor vibration levels using sensors to identify excessive vibrations or irregular patterns.
  3. Noise Assessment: Listen for unusual noises during operation, which could indicate misalignment or worn components.
  4. Temperature Check: Monitor the operating temperature of the coupling, as overheating might indicate issues.
  5. Alignment Check: Ensure proper alignment between connected shafts to prevent excessive stress on the coupling.
  6. Torque Measurement: Measure the transmitted torque to identify any discrepancies from the expected values.
  7. Dynamic Testing: Conduct dynamic tests with load variations to identify performance issues.
  8. Comparative Analysis: Compare coupling behavior to baseline performance data.

If any issues are identified, they should be promptly addressed through proper maintenance, realignment, or replacement of damaged components.

rubber coupling

Signs of Wear or Deterioration in Rubber Couplings

Rubber couplings can show signs of wear and deterioration over time due to factors like torque, temperature, and environmental conditions. To identify potential issues, watch out for the following signs:

  • Visible Cracks or Damage: Inspect the rubber element for visible cracks, tears, or physical damage. Such issues can weaken the coupling’s torque transmission and vibration damping capabilities.
  • Reduced Flexibility: Stiff or less flexible rubber indicates material degradation, which can impact the coupling’s ability to accommodate misalignment and absorb vibrations.
  • Increased Vibrations: Excessive machinery vibrations may suggest worn-out rubber couplings. Deterioration of the rubber diminishes its vibration dampening properties.
  • Unusual Noises: Any unusual sounds like squeaking or knocking might point to improper rubber coupling function and the need for inspection.
  • Altered Performance: Decline in machinery performance, such as reduced torque transmission or higher energy consumption, can indicate coupling wear.

Regular inspections, visual checks, vibration analysis, and performance monitoring can help detect wear and deterioration early. This enables timely replacement and avoids operational problems.

rubber coupling

Transmitting Torque and Damping Vibrations with a Rubber Coupling

A rubber coupling utilizes its flexible rubber element to achieve both torque transmission and vibration damping:

1. Torque Transmission: The rubber element connects two hubs, which are attached to the input and output shafts. As the input shaft rotates, it causes the rubber element to deform due to the applied torque. This deformation creates a shearing action within the rubber material, transmitting torque from the input to the output shaft.

2. Vibration Damping: The flexible rubber element of the coupling acts as a vibration isolator. When the coupling experiences external vibrations or shocks, the rubber absorbs the energy and dampens the vibrations before they reach the output shaft. The rubber’s elasticity and damping properties help mitigate vibrations and reduce the impact on the connected machinery, enhancing overall system performance and longevity.

This combination of torque transmission and vibration damping makes rubber couplings suitable for applications where misalignment compensation, shock absorption, and dampening of vibrations are essential, such as in pumps, compressors, HVAC systems, and various industrial machinery.

China supplier Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling  China supplier Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling
editor by CX 2024-05-08

China high quality Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Main products
Coupling refers to a device that connects 2 shafts or shafts and rotating parts, rotates together during the transmission of motion and power, and does not disengage under normal conditions. Sometimes it is also used as a safety device to prevent the connected parts from bearing excessive load, which plays the role of overload protection.

Couplings can be divided into rigid couplings and flexible couplings.
Rigid couplings do not have buffering property and the ability to compensate the relative displacement of 2 axes. It is required that the 2 axes be strictly aligned. However, such couplings are simple in structure, low in manufacturing cost, convenient in assembly and disassembly, and maintenance, which can ensure that the 2 axes are relatively neutral, have large transmission torque, and are widely used. Commonly used are flange coupling, sleeve coupling and jacket coupling.
Flexible coupling can also be divided into flexible coupling without elastic element and flexible coupling with elastic element. The former type only has the ability to compensate the relative displacement of 2 axes, but cannot cushion and reduce vibration. Common types include slider coupling, gear coupling, universal coupling and chain coupling; The latter type contains elastic elements. In addition to the ability to compensate the relative displacement of 2 axes, it also has the functions of buffering and vibration reduction. However, due to the strength of elastic elements, the transmitted torque is generally inferior to that of flexible couplings without elastic elements. Common types include elastic sleeve pin couplings, elastic pin couplings, quincunx couplings, tire type couplings, serpentine spring couplings, spring couplings, etc

Coupling performance

1) Mobility. The movability of the coupling refers to the ability to compensate the relative displacement of 2 rotating components. Factors such as manufacturing and installation errors between connected components, temperature changes during operation and deformation under load all put CHINAMFG requirements for mobility. The movable performance compensates or alleviates the additional load between shafts, bearings, couplings and other components caused by the relative displacement between rotating components.
(2) Buffering. For the occasions where the load is often started or the working load changes, the coupling shall be equipped with elastic elements that play the role of cushioning and vibration reduction to protect the prime mover and the working machine from little or no damage.
(3) Safe, reliable, with sufficient strength and service life.
(4) Simple structure, easy to assemble, disassemble and maintain.

How to select the appropriate coupling type

The following items should be considered when selecting the coupling type.
1. The size and nature of the required transmission torque, the requirements for buffering and damping functions, and whether resonance may occur.
2. The relative displacement of the axes of the 2 shafts is caused by manufacturing and assembly errors, shaft load and thermal expansion deformation, and relative movement between components.
3. Permissible overall dimensions and installation methods, and necessary operating space for assembly, adjustment and maintenance. For large couplings, they should be able to be disassembled without axial movement of the shaft.
In addition, the working environment, service life, lubrication, sealing, economy and other conditions should also be considered, and a suitable coupling type should be selected by referring to the characteristics of various couplings.

If you cannot determine the type, you can contact our professional engineer

Related products

 

Company Profile

 

Our Equipments

Main production equipment:
Large lathe, surface grinder, milling machine, gear shaper, spline milling machine, horizontal broaching machine, gear hobbing machine, shaper, slotting machine, bench drilling machine, radial drilling machine, boring machine, band sawing machine, horizontal lathe, end milling machine, crankshaft grinder, CNC milling machine, casting equipment, etc.
Inspection equipment:
Dynamic balance tester, high-speed intelligent carbon and sulfur analyzer, Blochon optical hardness tester, Leeb hardness tester, magnetic yoke flaw detector, special detection, modular fixture (self-made), etc.

Machining equipments
Heat equipment

 

Our Factory
Application – Photos from our partner customers

Company Profile
Our leading products are mechanical transmission basic parts – couplings, mainly including universal couplings, drum gear couplings, elastic couplings and other 3 categories of more than 30 series of varieties. It is widely used in metallurgical steel rolling, wind power, hydropower, mining, engineering machinery, petrochemical, lifting, paper making, rubber, rail transit, shipbuilding and marine engineering and other industries.
Our factory takes the basic parts of national standards as the benchmark, has more than 40 years of coupling production experience, takes “scientific management, pioneering and innovation, ensuring quality and customer satisfaction” as the quality policy, and aims to continuously provide users with satisfactory products and services. The production is guided by reasonable process, and the ISO9001:2015 quality management system standard is strictly implemented. We adhere to the principle of continuous improvement and innovation of coupling products. In recent years, it has successfully developed 10 national patent products such as SWF cross shaft universal coupling, among which the double cross shaft universal joint has won the national invention patent, SWF cross shaft universal coupling has won the new product award of China’s general mechanical parts coupling industry and the ZHangZhoug Province new product science and technology project.
Our factory has strong technical force, excellent process equipment, complete professional production equipment, perfect detection means, excellent after-sales service, various products and complete specifications. At the same time, we can provide the design and manufacturing of special non-standard products according to the needs of users. Our products sell well at home and abroad, and are trusted by the majority of users. We sincerely welcome friends from all walks of life at home and abroad to visit and negotiate for common development.p

  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

rubber coupling

Suitability of Rubber Couplings for High-Speed Rotation and Varying Loads

Rubber couplings are generally well-suited for applications involving high-speed rotation and varying loads, thanks to their unique properties and design features.

High-Speed Rotation: Rubber couplings can effectively handle high-speed rotation due to their inherent flexibility and damping characteristics. The elastomeric material used in rubber couplings helps absorb and dissipate vibrations that can occur at high speeds, contributing to smoother operation and reduced wear on connected machinery components.

Varying Loads: Rubber couplings are capable of accommodating varying loads due to their ability to deform under stress. The flexibility of rubber allows it to absorb shocks and impacts caused by changes in load, preventing damage to connected equipment. This feature is particularly beneficial in applications where sudden changes in load can occur, such as in industrial machinery.

However, it’s important to consider the specific requirements of the application. While rubber couplings provide excellent vibration isolation and misalignment compensation, they may not offer the same level of torsional rigidity as some other coupling types. In cases where precise torque transmission is crucial, and minimal torsional deflection is required, other coupling options might be more suitable.

Overall, rubber couplings can provide reliable performance in applications involving high-speed rotation and varying loads, especially when the benefits of vibration damping and misalignment compensation are essential.

rubber coupling

Common Rubber Materials Used in Manufacturing Rubber Couplings

Various rubber materials are used in the manufacturing of rubber couplings, each chosen based on its specific properties and the intended application:

  • Neoprene: Known for its oil and chemical resistance, neoprene rubber is used in couplings that require durability and resistance to harsh environments.
  • Nitrile: Nitrile rubber offers excellent oil and fuel resistance, making it suitable for applications in machinery that involve contact with lubricants.
  • Natural Rubber: Natural rubber provides good elasticity and flexibility, making it suitable for couplings requiring high levels of shock and vibration absorption.
  • EPDM: Ethylene Propylene Diene Monomer (EPDM) rubber offers good resistance to weather, ozone, and aging, making it suitable for outdoor or high-temperature applications.
  • Polyurethane: Polyurethane rubber offers high abrasion resistance and can handle higher load capacities, making it suitable for heavy-duty applications.

The choice of rubber material depends on factors such as the operating environment, chemical exposure, temperature range, flexibility requirements, and load conditions. Engineers select the appropriate rubber material to ensure the coupling’s performance and longevity in specific applications.

rubber coupling

Types of Rubber Couplings Designed for Specific Uses

There are several types of rubber couplings, each designed with specific characteristics to suit various applications:

  • Flexible Jaw Couplings: These couplings consist of two hubs connected by a flexible rubber element. They are commonly used in applications where misalignment, vibrations, and shocks need to be dampened, such as in pumps, fans, and compressors.
  • Oldham Couplings: Oldham couplings use a rubber disk as the intermediate element between two hubs. They provide compensation for misalignment while maintaining a constant velocity between input and output shafts, often used in printing, packaging, and CNC machinery.
  • Tyre Couplings: These couplings have a high degree of torsional flexibility and are suitable for applications with substantial misalignment and shock absorption requirements, like in heavy-duty machinery and construction equipment.
  • Pin and Bush Couplings: These couplings use rubber bushes to provide vibration isolation and accommodate misalignment. They are used in various industrial applications, including conveyors, mixers, and crushers.
  • Diaphragm Couplings: Diaphragm couplings use a flexible rubber diaphragm to transmit torque and compensate for misalignment. They are commonly found in precision equipment like servo motors and robotics.

Each type of rubber coupling is designed to address specific needs in different applications. The choice of coupling depends on factors such as the degree of misalignment, torque requirements, shock absorption, and the level of precision needed.

China high quality Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling  China high quality Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling
editor by CX 2024-05-07

China best Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling

Product Description

Main products
Coupling refers to a device that connects 2 shafts or shafts and rotating parts, rotates together during the transmission of motion and power, and does not disengage under normal conditions. Sometimes it is also used as a safety device to prevent the connected parts from bearing excessive load, which plays the role of overload protection.

Couplings can be divided into rigid couplings and flexible couplings.
Rigid couplings do not have buffering property and the ability to compensate the relative displacement of 2 axes. It is required that the 2 axes be strictly aligned. However, such couplings are simple in structure, low in manufacturing cost, convenient in assembly and disassembly, and maintenance, which can ensure that the 2 axes are relatively neutral, have large transmission torque, and are widely used. Commonly used are flange coupling, sleeve coupling and jacket coupling.
Flexible coupling can also be divided into flexible coupling without elastic element and flexible coupling with elastic element. The former type only has the ability to compensate the relative displacement of 2 axes, but cannot cushion and reduce vibration. Common types include slider coupling, gear coupling, universal coupling and chain coupling; The latter type contains elastic elements. In addition to the ability to compensate the relative displacement of 2 axes, it also has the functions of buffering and vibration reduction. However, due to the strength of elastic elements, the transmitted torque is generally inferior to that of flexible couplings without elastic elements. Common types include elastic sleeve pin couplings, elastic pin couplings, quincunx couplings, tire type couplings, serpentine spring couplings, spring couplings, etc

Coupling performance

1) Mobility. The movability of the coupling refers to the ability to compensate the relative displacement of 2 rotating components. Factors such as manufacturing and installation errors between connected components, temperature changes during operation and deformation under load all put CHINAMFG requirements for mobility. The movable performance compensates or alleviates the additional load between shafts, bearings, couplings and other components caused by the relative displacement between rotating components.
(2) Buffering. For the occasions where the load is often started or the working load changes, the coupling shall be equipped with elastic elements that play the role of cushioning and vibration reduction to protect the prime mover and the working machine from little or no damage.
(3) Safe, reliable, with sufficient strength and service life.
(4) Simple structure, easy to assemble, disassemble and maintain.

How to select the appropriate coupling type

The following items should be considered when selecting the coupling type.
1. The size and nature of the required transmission torque, the requirements for buffering and damping functions, and whether resonance may occur.
2. The relative displacement of the axes of the 2 shafts is caused by manufacturing and assembly errors, shaft load and thermal expansion deformation, and relative movement between components.
3. Permissible overall dimensions and installation methods, and necessary operating space for assembly, adjustment and maintenance. For large couplings, they should be able to be disassembled without axial movement of the shaft.
In addition, the working environment, service life, lubrication, sealing, economy and other conditions should also be considered, and a suitable coupling type should be selected by referring to the characteristics of various couplings.

If you cannot determine the type, you can contact our professional engineer

Related products

 

Company Profile

 

Our Equipments

Main production equipment:
Large lathe, surface grinder, milling machine, gear shaper, spline milling machine, horizontal broaching machine, gear hobbing machine, shaper, slotting machine, bench drilling machine, radial drilling machine, boring machine, band sawing machine, horizontal lathe, end milling machine, crankshaft grinder, CNC milling machine, casting equipment, etc.
Inspection equipment:
Dynamic balance tester, high-speed intelligent carbon and sulfur analyzer, Blochon optical hardness tester, Leeb hardness tester, magnetic yoke flaw detector, special detection, modular fixture (self-made), etc.

Machining equipments
Heat equipment

 

Our Factory
Application – Photos from our partner customers

Company Profile
Our leading products are mechanical transmission basic parts – couplings, mainly including universal couplings, drum gear couplings, elastic couplings and other 3 categories of more than 30 series of varieties. It is widely used in metallurgical steel rolling, wind power, hydropower, mining, engineering machinery, petrochemical, lifting, paper making, rubber, rail transit, shipbuilding and marine engineering and other industries.
Our factory takes the basic parts of national standards as the benchmark, has more than 40 years of coupling production experience, takes “scientific management, pioneering and innovation, ensuring quality and customer satisfaction” as the quality policy, and aims to continuously provide users with satisfactory products and services. The production is guided by reasonable process, and the ISO9001:2015 quality management system standard is strictly implemented. We adhere to the principle of continuous improvement and innovation of coupling products. In recent years, it has successfully developed 10 national patent products such as SWF cross shaft universal coupling, among which the double cross shaft universal joint has won the national invention patent, SWF cross shaft universal coupling has won the new product award of China’s general mechanical parts coupling industry and the ZHangZhoug Province new product science and technology project.
Our factory has strong technical force, excellent process equipment, complete professional production equipment, perfect detection means, excellent after-sales service, various products and complete specifications. At the same time, we can provide the design and manufacturing of special non-standard products according to the needs of users. Our products sell well at home and abroad, and are trusted by the majority of users. We sincerely welcome friends from all walks of life at home and abroad to visit and negotiate for common development.p

  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

rubber coupling

Impact of Elastomer Element Design on Rubber Coupling Performance

The design of the elastomer elements in a rubber coupling plays a critical role in determining its overall performance and capabilities. The elastomer elements are the heart of the coupling, responsible for transmitting torque, absorbing vibrations, and accommodating misalignments. The following aspects of elastomer element design significantly impact the coupling’s performance:

  • Elastomer Material: The choice of elastomer material influences the coupling’s flexibility, damping characteristics, and resistance to wear. Different elastomers offer varying levels of resilience, chemical resistance, and temperature tolerance. Common elastomers used include natural rubber, synthetic rubber compounds, and polyurethane.
  • Elastomer Hardness (Durometer): The durometer hardness of the elastomer affects its flexibility and ability to absorb vibrations. Softer elastomers have higher damping capabilities but may offer less torsional stiffness. Harder elastomers provide better torque transmission but may have reduced vibration isolation.
  • Elastomer Shape and Geometry: The shape and geometry of the elastomer elements influence their flexibility and deformation characteristics. Different designs, such as cylindrical, star-shaped, or spider-shaped elements, affect the coupling’s ability to accommodate misalignments and transmit torque smoothly.
  • Elastomer Bonding: The way the elastomer is bonded to the coupling’s hubs or inserts impacts the coupling’s overall durability and reliability. Proper bonding ensures that the elastomer effectively transfers torque and maintains its properties over time.
  • Elastomer Properties Over Temperature: Elastomers can exhibit changes in performance with temperature fluctuations. Understanding how the chosen elastomer material behaves at different temperatures is essential for applications with varying operating conditions.

The design of the elastomer elements is a delicate balance between providing flexibility for vibration isolation and misalignment compensation while ensuring adequate torque transmission and overall coupling stiffness. Engineers must carefully select elastomer materials and design features based on the specific requirements of the application to achieve optimal coupling performance.

rubber coupling

Handling Torque and Vibration Suppression in Rubber Couplings

Rubber couplings are designed to effectively handle both high levels of torque transmission and vibration suppression. The flexibility and damping properties of rubber make it well-suited for these purposes:

  • Torque Transmission: Rubber couplings can transmit torque between shafts while accommodating angular misalignment. The rubber element flexes and deforms as torque is applied, allowing the coupling to transmit power even in misaligned conditions.
  • Vibration Suppression: Rubber’s inherent damping characteristics help absorb and dissipate vibrations and shocks generated during the operation of machinery. This feature reduces the transfer of vibrations to connected components, minimizing wear and enhancing overall system performance.

Engineers select the appropriate rubber material and coupling design to ensure that the coupling can effectively handle the required torque levels and provide the desired vibration suppression. Rubber couplings find applications in various industries where torque transmission and vibration damping are critical for smooth and reliable machinery operation.

rubber coupling

Challenges of Misaligned Rubber Couplings and Their Resolution

Misaligned rubber couplings can lead to several challenges that impact the performance and reliability of machinery. These challenges include:

1. Reduced Efficiency: Misalignment can result in increased friction, causing energy loss and reduced efficiency in power transmission.

2. Increased Wear: Misaligned rubber couplings can cause uneven wear on the coupling’s rubber element and other connected components, leading to premature failure.

3. Vibrations and Noise: Misalignment can cause vibrations and noise, which not only affect the machinery’s operation but also contribute to discomfort for operators.

4. Overloading: Misalignment can lead to uneven loading on the coupling and connected components, potentially causing overloading and damage.

5. Premature Failure: Continuous operation with misaligned couplings can accelerate wear and fatigue, leading to premature failure of the coupling and other components.

To resolve these challenges, proper alignment practices are crucial:

1. Regular Maintenance: Perform routine inspections to identify misalignment and other issues early, allowing for timely adjustments.

2. Precise Installation: Ensure accurate alignment during the installation process to prevent initial misalignment.

3. Laser Alignment: Use laser alignment tools for accurate and reliable alignment between shafts.

4. Corrective Measures: If misalignment is detected, take corrective actions promptly to restore proper alignment.

5. Balancing Loads: Distribute loads evenly across the coupling and connected components to prevent overloading.

By addressing misalignment challenges proactively and adopting appropriate maintenance practices, the longevity and performance of rubber couplings can be significantly improved, minimizing downtime and maintenance costs in industrial applications.

China best Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling  China best Stainless Steel Coupling Gear Rigid Roller Chain Fluid Tyre Grid Jaw Spider HRC Nm Motor Flange Gear Pump Rubber Spline Shaft Flexible Universal Joint Coupling
editor by CX 2024-04-30

China Hot selling Coupling Hydraulic Fluid Drive Roller Chain Spider Flexible Jaw Rubber Flexible Jaw Flange Motor Rubber Shaft Steel

Product Description

    Coupling Hydraulic Fluid Drive Roller Chain Spider Flexible Jaw Rubber Flexible Jaw Flange Motor Rubber Shaft Steel

Application of Coupling

A coupling is a mechanical device that connects 2 shafts together. It is used to transmit power from 1 shaft to another, while allowing for some degree of misalignment or end movement or both.

Couplings are used in a variety of applications, including:

  • Machinery: Couplings are used to connect the shafts of different machines, such as motors, pumps, and generators.
  • Vehicles: Couplings are used to connect the engine and transmission of a vehicle.
  • Power transmission: Couplings are used to transmit power from 1 source to another, such as from a generator to a distribution network.
  • Industrial applications: Couplings are used in various industrial applications, such as in food processing, chemical processing, and manufacturing.

There are many different types of couplings, each with its own advantages and disadvantages. Some of the most common types of couplings include:

  • Flanged couplings: Flanged couplings are the most common type of coupling. They are simple and easy to install, and they are relatively inexpensive. However, they can be bulky and they can add weight to the system.
  • Jaw couplings: Jaw couplings are a type of flexible coupling. They are able to accommodate misalignment between the shafts, and they are relatively compact. However, they can be more expensive than flanged couplings.
  • Hirth couplings: Hirth couplings are a type of rigid coupling. They are able to transmit high torque, and they are relatively durable. However, they can be more difficult to install than other types of couplings.
  • Universal joints: Universal joints are a type of flexible coupling. They are able to accommodate misalignment between the shafts, and they are relatively compact. However, they can be more expensive than other types of couplings.

The type of coupling best for a particular application will depend on several factors, including the amount of torque that needs to be transmitted, the amount of misalignment allowed, and the cost.

rubber coupling

Minimizing Resonance and Improving Machinery Performance with Rubber Couplings

A rubber coupling can play a significant role in minimizing resonance and enhancing the overall performance of machinery by effectively damping vibrations and reducing the risk of resonance-related issues. Resonance is a phenomenon where a mechanical system’s natural frequency matches the frequency of external vibrations, leading to amplified oscillations and potential damage.

The following ways illustrate how rubber couplings contribute to minimizing resonance and improving machinery performance:

  • Vibration Damping: Rubber couplings utilize the inherent damping properties of elastomers to absorb and dissipate vibrations generated during operation. These vibrations can include those caused by unbalanced loads, eccentricities, or other disturbances. By damping these vibrations, rubber couplings prevent them from building up and causing resonance.
  • Vibration Isolation: Rubber couplings act as isolators by decoupling the connected components from each other. This isolation prevents vibrations from being transmitted directly from one component to another, thereby reducing the potential for resonance to occur.
  • Misalignment Compensation: Rubber couplings can accommodate misalignments between shafts, which often contribute to excessive vibrations. By allowing a certain degree of misalignment, the coupling prevents additional forces that could trigger resonance.
  • Reduced Stiffness: The flexibility of the elastomer elements in rubber couplings can reduce the overall stiffness of the system. A lower stiffness helps avoid the amplification of resonance by allowing some deformation of the coupling under varying loads and conditions.
  • Dynamic Absorption: Rubber couplings are effective at absorbing dynamic loads, including sudden shocks or impacts. These dynamic events can excite resonance, and the coupling’s ability to absorb and disperse such forces helps prevent resonance-related issues.

By effectively dampening vibrations, isolating components, and accommodating misalignments, rubber couplings can help minimize the risk of resonance-related problems. Engineers and designers must carefully select the appropriate rubber coupling type, elastomer material, and design to match the specific machinery and operating conditions, thereby ensuring improved machinery performance and longevity.

rubber coupling

Handling Torque and Vibration Suppression in Rubber Couplings

Rubber couplings are designed to effectively handle both high levels of torque transmission and vibration suppression. The flexibility and damping properties of rubber make it well-suited for these purposes:

  • Torque Transmission: Rubber couplings can transmit torque between shafts while accommodating angular misalignment. The rubber element flexes and deforms as torque is applied, allowing the coupling to transmit power even in misaligned conditions.
  • Vibration Suppression: Rubber’s inherent damping characteristics help absorb and dissipate vibrations and shocks generated during the operation of machinery. This feature reduces the transfer of vibrations to connected components, minimizing wear and enhancing overall system performance.

Engineers select the appropriate rubber material and coupling design to ensure that the coupling can effectively handle the required torque levels and provide the desired vibration suppression. Rubber couplings find applications in various industries where torque transmission and vibration damping are critical for smooth and reliable machinery operation.

rubber coupling

Challenges of Misaligned Rubber Couplings and Their Resolution

Misaligned rubber couplings can lead to several challenges that impact the performance and reliability of machinery. These challenges include:

1. Reduced Efficiency: Misalignment can result in increased friction, causing energy loss and reduced efficiency in power transmission.

2. Increased Wear: Misaligned rubber couplings can cause uneven wear on the coupling’s rubber element and other connected components, leading to premature failure.

3. Vibrations and Noise: Misalignment can cause vibrations and noise, which not only affect the machinery’s operation but also contribute to discomfort for operators.

4. Overloading: Misalignment can lead to uneven loading on the coupling and connected components, potentially causing overloading and damage.

5. Premature Failure: Continuous operation with misaligned couplings can accelerate wear and fatigue, leading to premature failure of the coupling and other components.

To resolve these challenges, proper alignment practices are crucial:

1. Regular Maintenance: Perform routine inspections to identify misalignment and other issues early, allowing for timely adjustments.

2. Precise Installation: Ensure accurate alignment during the installation process to prevent initial misalignment.

3. Laser Alignment: Use laser alignment tools for accurate and reliable alignment between shafts.

4. Corrective Measures: If misalignment is detected, take corrective actions promptly to restore proper alignment.

5. Balancing Loads: Distribute loads evenly across the coupling and connected components to prevent overloading.

By addressing misalignment challenges proactively and adopting appropriate maintenance practices, the longevity and performance of rubber couplings can be significantly improved, minimizing downtime and maintenance costs in industrial applications.

China Hot selling Coupling Hydraulic Fluid Drive Roller Chain Spider Flexible Jaw Rubber Flexible Jaw Flange Motor Rubber Shaft Steel  China Hot selling Coupling Hydraulic Fluid Drive Roller Chain Spider Flexible Jaw Rubber Flexible Jaw Flange Motor Rubber Shaft Steel
editor by CX 2023-10-08

China #40 #50 #60 #80 Industrial Aluminum Roller Chain And Sprocket Set For Heavy Duty Industrial Mot coupling capacitance

Relevant Industries: Hotels, Garment Stores, Developing Materials Retailers, Production Plant, Equipment Mend Stores, Food & Beverage Manufacturing facility, Farms, Cafe, Residence Use, Retail, Food Store, Printing Stores, Construction works , Vitality & Mining, Meals & Beverage Stores, Other, Advertising Business
Tailored assist: OEM, ODM, OBM
Normal or Nonstandard: Normal
Sort: Roller Chain
Content: Metal
Tensile Power: 3.5-38.8KN
Item name: Industrial Roller Chain
Search phrases: Engine Areas
Provider: Settle for OEM ODM
Packing: Chain-2 40-3 fifty 50-2-50-3 sixty 60-2 sixty-3 80 eighty-2 80-3 one hundred 100-2 100-3 one hundred twenty a hundred and twenty-2 one hundred twenty-3 one hundred forty a hundred and forty-2 a hundred and sixty 160-2 one hundred eighty 25710-2 240Limited Pitch Precision Roller Chain (B Sequence)(1,2,3)06B-1-2-3 06B-1-2-3 08B-1-2-3 10B-1-2-3 12B-1-2-3 16B-1-2-3 20B-1-2-3 24B-1-2-3 28B-1-2-3 32B-1-2-3 40B-1-2-3 48B-1-2-3 56B-1-2-364B-1-2-3 72B-1-2-three Hefty Responsibility Sequence Roller Chain(1,2)08AH-1 10AH-1 12AH-1-2-3 16AH-1-2-3 20AH-1-2-3 24AH-1-2-3 28AH-1-2-3 32AH-1-2-3 40AH-1-2-threeSide Bow Chain40SB 43SB 50SB 60SB 63SB 80SB 08BSB 08BSBY1 10BSB 12BSB C2050SBMotorbike ChainH 420 420H 428 428H 520 520H 525 525H 530 530H 630 630HEngine Mechanism Chain (Timing Chain)CL04Self-Lubrication Roller Chain08BSLR 10BSLR 12BSLR 16BSLR 40SLR 50SLR 60SLR 80SLRDouble Pitch Transmission Chain208A 208B 210A 210B 212A 212B 216A 216B 220A 220B 2100Bush ChainP15F-B P20-B P25-B P25F1-B P30F2-B P36-B P40-B P45-B P50-B P55-B P60-B P70-B P80-B Business Profile SFR Chain Group has been excelling at producing and innovating bike and industrial chain given that 1991,often focusing on high good quality and innovation to remain in the pole position of the market. SFR operates 4 fully owned factories and 1 joint enterprise, certified by ISO9002, ISO9001 and ISO/TS16949 Top quality Administration Program. SFR provides in excess of 2000 series, which are exported to above 60 nations all over the World, and are broadly utilized in assortment of fields. These kinds of as agricultural machines, motorcycles, metallurgy, wood processing, or meals and beverage processing, amid other people.We at SFR Chain always adhere to the group’s spirit of integrity, effectiveness and innovation:”We attempt to supply the ideal merchandise and support to our customers” SFR is a world-wide professional provider concentrating on chain push remedies, with renowned chain push makes this sort of as SFR, SUNFUN, MOTOMAX, EP and TVH.Our commitment to R&D led SFR to set up atable cooperation with numerous ell-known universities and investigation institutes in China, as properly as setting up an Smart Chain Drive Investigation Centre inside of the group, Higher Good quality setscrew variety bellows coupling Torque Transmission stepping servo motor excellent reaction Coupling Manufacturer altogether resulting in its more than 70 patents. This enables us to offer you the widest range of electrical power transmission and conveyor chain at the most aggressive charges. Since 1991, it has grow to be a leading organization in the chain sector with 5 creation bases, about 110,000 square CZPT of manufacturing facility place, far more than 180 patents, much more than 2,000 chain versions, more than 8,000 item specs,exports to more than eighty countries throughout the world. Items are commonly used in numerous fields this kind of as logistics and conveying, foodstuff business, petroleum business, engineering equipment, lifting tools, packaging machinery processing, environmental protection equipment, tobacco machinery, and so on. Manufacturing unit equipment SFR will keep on to boost the expense in manufacturing, R&D, follow the wave of Market 4., repeatedly enhance the firm’s technologies, item, marketing and manufacturer electrical power, improve the firm’s extensive strength, and provide customers with greater chain push remedies. Large-velocity punching of industrial chain platesAutomatic substantial-speed punching, large effectiveness, high precision, and very good seem insulation and environmental defense steps. Bike chain automated assembly lineThe chain automatic assembly line integrates the processes of elements loading, chain assembly, automatic detection, pre-stretching, head riveting, and oiling to attain the actual computerized and effective agricultural chain automatic assembly. Computerized assembly line for agricultural chainsUsing the layout of electromechanical integration, the mechanical mildew and pneumatic and hydraulic components are effectively mixed collectively to realize the automatic assembly of intricate structure chains. Tests Machine SFR Chain currently has 5 manufacturing crops masking over 50,000 square CZPT and utilizing nearly 1, Elastic pin coupling higher toughness 45# steel hub Nylon elastomer flexible shaft link custom-made motor push coupling 000 men and women. We provide in top expertise and some of the production gear utilised for production and inspection to provide the optimum top quality requirements and create effective economies of scale. Suggest Merchandise

gearbox

Programming With Couplings

A coupling is a mechanical device that connects two shafts together and transmits power. Its purpose is to join rotating equipment and allows some degree of end-movement or misalignment. There are many different types of couplings. It’s important to choose the right one for your application.

Mechanical connection between two shafts

There are many ways to achieve mechanical connection between two shafts, including the use of a coupling. One common type is the beam coupling, which is also known as a helical coupling. It is used for transmission of torque between two shafts. This type of connection accommodates axial, parallel and angular misalignments.
The hubs and shafts of a worm gear are connected together by a coupling. This mechanical connection allows one shaft to turn another without causing a mechanical failure. This type of coupling is made from sliding or rubbing parts to transfer torque. However, the coupling is not designed to withstand jerks, so it isn’t suitable for high-speed applications.
The use of a coupling is common in machinery and equipment. It helps transmit power from one drive shaft to the other, while adding mechanical flexibility. It is also useful for reducing the impact and vibration caused by misalignment. It also protects the drive shaft components from wear and tear.
A double-hook coupling can be used to provide a uniform angular velocity at the driven shaft. Another example is a double-jointed coupling. A double-jointed coupling can be used to connect shafts that are not directly intersecting. The double-jointed yoke can be used for the same purpose.
A shaft coupling is a device that maintains a strong mechanical connection between two shafts. It transfers motion from one shaft to another, at all loads and misalignments. Unlike a conventional linkage, a shaft coupling isn’t designed to allow relative motion between the two shafts. Couplings often serve several purposes in a machine, but their primary use is torque and power transmission.

Functions that control the flow of another function

One of the simplest programming constructs is a function that controls the flow of another function. A function can take an argument and return a different value, but it must be ready to return before it can pass that value to another function. To do this, you can use the goto statement and the if statement. Another way to control flow is to use a conditional statement.
gearbox

Criteria for selecting a coupling

There are several important factors to consider when choosing the right coupling. One of the most important factors is coupling stiffness, which depends on the material used and the shape. The stiffness of a coupling determines its ability to resist elastic deformation. A stiff coupling is desirable for certain types of applications, but it’s undesirable for others. Stiffness can reduce the performance of a system if there’s too much inertia. To avoid this, ensure that the coupling you choose is within the recommended limits.
The size of a coupling is also important. Different coupling types can accommodate different shaft sizes and shapes. Some couplings have special features, such as braking and shear pin protection. When choosing a coupling, you should also consider the type of driven equipment. If you need to connect a high-torque motor, for example, you’ll want to choose a gear coupling. Likewise, a high-speed machine may require a disc coupling.
Another factor to consider when selecting a coupling is the torque rating. Despite its importance, it’s often underestimated. The torque rating is defined as the torque of the coupling divided by its OD. In some cases, torque may fluctuate during a cycle, requiring a coupling with a higher torque rating.
Torsionally flexible couplings are also important to consider. Their design should be able to withstand the torque required during operation, as well as the required speed. The coupling should also have a high degree of torsional stiffness, as well as damping. Furthermore, a damping coupling can reduce the energy wasted through vibration.
The sizing of a coupling is also determined by the torque. Many engineers use torque to select the correct coupling size, but they also take into consideration torsional flexibility and torsional stiffness. For example, a shaft may be able to handle large torque without damaging the coupling, while a disk may be unable to handle large amounts of torque.
Besides torque, another important consideration in coupling selection is the cost. While a coupling may be cheaper, it may be less reliable or easier to maintain. Couplings that are difficult to service may not last as long. They may also require frequent maintenance. If that’s the case, consider purchasing a coupling with a low service factor.
There are many different types of couplings. Some require additional lubrication throughout their lifetime, while others are 100% lubrication-free. An example of a 100% lubrication-free coupling is the RBI flexible coupling from CZPT. This type of coupling can significantly reduce your total cost of ownership.
In addition to the above-mentioned benefits, elastomeric couplings are low-cost and need little maintenance. While they are often cheaper than metallic couplings, they also have excellent shock absorption and vibration dampening properties. However, they are susceptible to high temperatures. Also, they are difficult to balance as an assembly, and have limited overload torque capacity.
China #40 #50 #60 #80 Industrial Aluminum Roller Chain And Sprocket Set For Heavy Duty Industrial Mot     coupling capacitanceChina #40 #50 #60 #80 Industrial Aluminum Roller Chain And Sprocket Set For Heavy Duty Industrial Mot     coupling capacitance
editor by CX 2023-04-19

China Chain and sprocket factory : Gravity drive chain connecting link China in Grenoble France Stainless Steel Tapered Roller for Conveyor with ce certificate top quality low price

China Chain and sprocket factory : Gravity drive chain connecting link China in Grenoble France  Stainless Steel Tapered Roller for Conveyor with ce certificate top quality low price

We – EPG Team the biggest Chain and agricultural gearbox factory in China with 5 distinct branches. For much more details: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828

The higher precise CNC tools, this kind of as Sluggish-feeding wire-lower machine, jig grinding device and electrical discharge machine, makes certain the top high quality precision of mould processing, with the substantial effective and environmental safety acid rolling line becoming the biggest raw material changing tools in the discipline in china The wildly use of automated milling device, large-pace automatic feeding punch, higher speed automatic rolling and assembling device assures the substantial top quality and performance of parts and chain generating. corrosion- Our merchandise selection includes all varieties of helical equipment, spur equipment, bevel equipment, gear rack, worm gear, sprockets,chains, bearings, pto shaft, agricultural gearboxes.and use-resistant coiled tubing injector roller chain assemblies for the oil and gasoline industries. Offered in solitary and double pitch drive chain kinds with various measurements and electricity rating. Attributes consist of zinc-nickel and non-hexavalent chromate protective exterior coating, electrochemically bonded, and interference suit cover plates. engineering class chains & precision roller chains. Single strand chain, multi-strand chains, double pitch chains, corrosion resistant chains, self-lubricating chains, attachment chains, leaf chains, and specialty chains. A211 Design GRAVITY TAPERED ROLLER

Positive aspects:
roller(stHangZhourd taper3.6 levels, can in accordance to consumer desire for personalized) composed of at the two ends of the bearing seat and the cylinder physique welding and at both ends of a plastic endcaps prevent entry of du EPT and splash drinking water.
 

Packaging & Delivery:
Packaging Detail: wood box or carton packing
Supply Detail: In accordance to your quantity

Our Solutions:
one. OEM Support
2. Unique conveyor or EPT relevant machines’ consumer-manufactured
three. Style for consumer

Roller Diameter: 50

Shaft Diameter: 12/15

Tube Thickness: 1.5mm/2.0mm/2.5mm/2.75mm

Axle: Plain Stop/ Feminine Thread/Open Slot

Content: Galvanized/ Stainless Steel/Aluminium 

Package deal: StHangZhourd Bundle

Certificate: ISO, CE, SGS

Transport Cargo: cartons,sacks,tire,pallets,turnover bins,and so forth.

Applicable Occasions: Indoor transportation. Meals services industry,healthcare market, logistics conveying technique

Tube: Wall thickness1.5/2/2.5/2.75mm

Delivery Time:twelve Days( according to the sum)

 

About RUIDA:

        EPT is International Top and Specialist Maker of EPT Rollers.
       Each yr, EPT supplies tens of millions of industrial rollers for many customers from different fields all above the entire world. More than ten many years of skilled encounter allows our firm to give strong assistance for global enterprises to accomplish hugely effective logistics.
         ZHangZhoug RUIDA, the wholly-owned subsidiary of EPT Group, has usually been devoted to provide higher top quality conveyor roller products and technological services for comprehensive industries because its institution in 1997.
      The conveyor roller items of ZHangZhoug EPT are primarily utilized in foodstuff, drugs, tobacco, apparel, EMS, logistics, production, rubber, airport floor services and EPT industrial circles. We offer far more steady and imaginative roller items for you, furthermore, we are committed to investigation tailored companies matching software, with a view of helping the industrial consumers to boost productiveness and minimize the logistics fees.
       We have received the regular tru EPT from international buyers, like those distinguished and influential products manufacturers and logistics program integrators. Our consumers can get pleasure from a lot more than 40 versions of merchandise collection, covering all specs that consumers want. Presently, our products have been marketed to Europe and The usa, Australia and scores of EPT nations and regions, and the revenue range is nevertheless in growing.
       In China, EPT  has established a manufacturing base masking 11,000 square meters . We have in excess of one particular hundred employees of R&D, manufacture, revenue and providers, as a result generating contribution to clients in many methods.
       In spite of the foremost benefit we have accomplished in scale, we never stop to pursue a lot more profound industry share. From introducing the wholly information-based ERP management system, to the impartial study and development of the roller parameterized on the internet drawing program provider, we are viewing our market place from a model new viewpoint, and are delighted to share our tips of quality and innovation with every single buyer.
       In the long term, our company will consider creating competitiveness for customers’ logistics methods as our mission, and “developing EPT  to be the mo EPT influential provider and service provider in the circle of global industrial tools” as our vision.

EPT Roller:

Creation Line:

Far more Goods for Decide on:

The use of authentic equipment manufacturer’s (OEM) component figures or trademarks , e.g. CASE® and John Deere® are for reference functions only and for indicating item use and compatibility. Our organization and the shown alternative areas contained herein are not sponsored, accredited, or produced by the OEM.

China Chain and sprocket factory : Gravity drive chain connecting link China in Grenoble France  Stainless Steel Tapered Roller for Conveyor with ce certificate top quality low price

China Chain and sprocket factory : Gravity drive chain connecting link China in Grenoble France  Stainless Steel Tapered Roller for Conveyor with ce certificate top quality low price

China Chain and sprocket factory : Gravity drive chain connecting link China in Grenoble France  Stainless Steel Tapered Roller for Conveyor with ce certificate top quality low price

China Chain and sprocket factory : Gravity drive chain connecting link China in Grenoble France  Stainless Steel Tapered Roller for Conveyor with ce certificate top quality low price

China Chain and sprocket factory : High 12B-2 Rubber Top Roller Chain Snap-On Style in Durg-Bhilainagar India Quality Manufacturer Dehydration Machine Industrial Food Dehydrator with ce certificate top quality low price

China Chain and sprocket factory : High 12B-2 Rubber Top Roller Chain Snap-On Fashion in Durg-Bhilainagar India  Quality Producer Dehydration Equipment Industrial Foodstuff Dehydrator with ce certificate top high quality low value

We – EPG Team the greatest Chain and agricultural gearbox factory in China with 5 different branches. For far more particulars: Cellular/whatsapp/telegram/Kakao us at: 0086-13083988828

In addition, all our manufacturing methods are in compliance with ISO9002 expectations for a specialised supplier of a entire range of chains, sprockets, gears, equipment racks, V-belts, couplings and reducers, pto shaft, agricultural gearboxes….We’ve Due to our wide product assortment and wealthy ordeals in this sector, we are self-assured to supply our customers flexible and diversified solutions.built up our merchandise assortment to reply to the vastly distinct problems discovered in various industrial environments all around the globe. From large industry to precision production, we work with end-end users in almost each market and have expert options which are confirmed to offer a distinct overall performance benefit for your application. engineering course chains & precision roller chains. Single strand chain, multi-strand chains, double pitch chains, corrosion resistant chains, self-lubricating chains, attachment chains, leaf chains, and specialty chains.

ZheJiang EPT Foodnbev EPT forces to generate all types of conveyor systems depending on client needs. 
And all types of conveyor spare parts like the modular belt, leading chain, the conveyor link elements.

Specification of the stainless metal belt conveyor program: 
 

EPT Size 1-25m, depending on your project layout
EPT Width 100mm-5000mm
EPT Peak Adjustable. Whee EPT and brake are offered
Frame content Stainless metal/ Carbon steel with coating/ Aluminum
Belt content Stainless steel 304, 316, 401, four hundred modular belt
EPT belts  Adaptable chain/ Slat best chain/PVC/PU/Mesh belt/ Plastic chain/Stainless chain all offered depending on the items that transfer
Application Specifically for the beverage sector
Motor Italy model/SEW/China model
Voltage 380V(415V)/50HZ(60HZ)
Certificate of gear SGS/Fda
Certificate of unique Kind E/F/P/A/L/M
Cost conditions FOB/CIF
Organization sort Company

Associated images of the conveyor method

Modular belt conveyor configuration list:
 

Chain product Plastic chain, flexible chain, best chain, stainless steel chain and also can use all kind of modular belt
Body construction Waterproof SS 304 substance body with SS304 bearing( pick this variety frame and bearing when the items that transfer with h2o). Stainless steel body widely employs in foods and beverage industry goods transfer.

Body bending without having any slot at the bottom. It can enhance the life span of the conveyor.

Filler strip with stainless steel beneath the belt to shield the modular belt runs effortlessly.  And assist the belt working under large load capacity with high speed. It also can decrease the friction coefficient amongst the modular belt and conveyor frame.

Assist leg Use bow shape to make the conveyor far more steady. Also can decide on tripod stand 
Electricity technique Higher-high quality motor with electrical management cupboard
Automated control
method
Can attain features these kinds of as lane separation, sorting, screening, classification, etc. in accordance to your need to have
EPT design and style We can fabricate according to your drawing. Also, we have a big layout crew that can make style for your in accordance to your manufacturing unit layout. We especially great at whole plant transportation style
Shipping and delivery time fifteen workdays

ZheJiang EPT Manufacturing unit and Business office overview

Related items developed by ZheJiang EPT Foodnbev EPT Co.,ltd
 

EPT method All kinds of the computerized conveyor technique
Modular belt All types of modular belt, FT/FG/RIB/ROLLER Leading collection
Plastic chain Plastic prime chain, Versatile chain, Stainless steel chain
Market belt PVC/PU belt, TPU belt, timing belt
EPT roller Stainless steel roller, PVC roller
EPT conveyor spare elements Guard rails, Use strips, Foot basis, Bearing, Connection elements

Company introduces:
ZheJiang H.J FoodnBev EPT Co., Ltd focuses on providing our buyers with dependable, 
simple-to-use conveyor methods and associated parts that fulfill their wants.

With our personal manufacturing unit which located in ZheJiang , EPT goods are exported to Southea EPT Asia,
South The usa, the Center East, Europe, and also well-liked in the domestic market place.

We technique every venture with the intent of obtaining a better way to solve the customers’ difficulties by listening to their specific needs, and implementing what we learn to be EPT fix their certain content handling
specifications.

We are seeking ahead to cooperating with you!
Get in touch with us now:

 
 

The use of unique products manufacturer’s (OEM) element numbers or emblems , e.g. CASE® and John Deere® are for reference reasons only and for indicating product use and compatibility. Our firm and the shown substitution components contained herein are not sponsored, accredited, or produced by the OEM.

China Chain and sprocket factory : High 12B-2 Rubber Leading Roller Chain Snap-On Fashion in Durg-Bhilainagar India  Good quality Maker Dehydration Device Industrial Meals Dehydrator with ce certification leading high quality minimal cost

China Chain and sprocket factory : High 12B-2 Rubber Prime Roller Chain Snap-On Type in Durg-Bhilainagar India  Quality Maker Dehydration Machine Industrial Meals Dehydrator with ce certificate best top quality reduced price tag

China Chain and sprocket factory : High 12B-2 Rubber Best Roller Chain Snap-On Fashion in Durg-Bhilainagar India  High quality Manufacturer Dehydration Device Industrial Foods Dehydrator with ce certificate best high quality lower price

China Chain and sprocket factory : High 12B-2 Rubber Top Roller Chain Snap-On Style in Durg-Bhilainagar India  Top quality Maker Dehydration Equipment Industrial Foodstuff Dehydrator with ce certificate leading top quality low price tag

China Roller chain and sprocket manufacturer Automatic lululemon China in Feira De Santana Brazil L Type Packaging Sealing Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Automatic lululemon China in Feira De Santana Brazil  L Type Packaging Sealing Machine with ce certificate top quality low price

We – EPG Team the greatest Chain and agricultural gearbox manufacturing unit in China with 5 distinct branches.

Support & High quality controlWe offer in depth drawings and offer you each time required.guidance We are aiming to meet up with the requires of the consumers all around the entire world.. a specialized provider of a total selection of chains, sprockets, gears, gear racks, V-belts, couplings and reducers, pto shaft, agricultural gearboxes….necessary. ISO 9001 accredited company of precision roller chains. Varieties incorporate single and multiple strand, hollow pin, aspect bow, rollerless, self-lubricating, straight sidebar, double pitch, brushed, nickel plated, armor coated, 304 stainless steel, leaf, hoist and O-ring, citrus, sorting and caterpillar roller chains. Description:
Gorgeous device, Steady quality, Safety,energy preserving, patented products, domestic initiative, application to the POF PVC PP movie  thermal shrink packaging effect is perfect.
Functions:
1.Look and knot design in accordance with national stHangZhourds, the fuselage utilizes fingerprint resistant sheet manufacturing after spray treatment method.
two.Handle panel making use of programming technique, 12V DC input , button swap , electronic display. 
three.  Transmission making use of 24v DC Motor speed handle making use of variable frequency technologies -9 file adjustment.
four.The conveyor belt can be employed wire mesh belt, chain roller, Teflon mesh belt three. 
five.Heating making use of 600W 220V far infrared quartz heating tube. 
six.Temperature control using higher precision clever temperature control method . up and down temperature unbiased regulation. 
7.Very hot air circulation utilizing 220V 60W 2200 to the extended axis motor with wind wheel. 
eight.The bracket can be disassembled , and the peak of the bracket can be modified. 

L SEALER FQL 450 A SHRINK TUNNEL BSN 4571C
VOLTAGE 220/50-60HZ VOLTAGE 380v 50-60HZ
Power one.35KW Power 9KW
AIR Force: 5-seven TUNNEL Dimensions(L*W*H) 1200*400x200mm
Capability fifteen-30bags/min Item Dimension(W*H) 350x150mm
Item MAX SIZE  L+H(H<150mm) <500mm EPT Velocity -15m/min
Product MAX Dimensions W+H(H<150mm) < 400mm Substance CHAIN, TEFLON
SEALING Size 550*450mm CONVEYING LOAD 20kg max
Machine Dimensions (L*W*H) 1650*800*1450mm Device Size (L*W*H) 1600x560x660mm
Bodyweight 300KG Fat 80kg 
Application: POF.PE, Software: PE.POF

 

The use of first equipment manufacturer’s (OEM) part numbers or emblems , e.g. CASE® and John Deere® are for reference reasons only and for indicating item use and compatibility. Our organization and the detailed substitution components contained herein are not sponsored, approved, or produced by the OEM.

China Roller chain and sprocket manufacturer Automatic lululemon China in Feira De Santana Brazil  L Type Packaging Sealing Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Automatic lululemon China in Feira De Santana Brazil  L Type Packaging Sealing Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Automatic lululemon China in Feira De Santana Brazil  L Type Packaging Sealing Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Automatic lululemon China in Feira De Santana Brazil  L Type Packaging Sealing Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer High forklift chain anchor pin China in Cartagena Colombia Quality 32322 Single Row Metric Taper Roller Bearing with ce certificate top quality low price

China Roller chain and sprocket manufacturer High forklift chain anchor pin China in Cartagena Colombia  Quality 32322 Single Row Metric Taper Roller Bearing with ce certificate top quality low price

We – EPG Group the largest Chain and agricultural gearbox manufacturing facility in China with 5 diverse branches.

Our experts and engineers have 23 several years of Expertise in the Bearing Sector.ISO With EPG model registered in much more than 70 nations around the world like America , Europe , Japan and so on, it has companions amongst entire world best enterprises, this sort of as JOHNDEERE, NEW HOLLAND, CLAAS, HONDA, KUBOTA, YANMAR, and so forth.9001:2015 accredited maker and distributor of roller chains. Types of roller chains incorporate ASME/ANSI standard chains, attachment chains, corrosion resistant chains, lube-cost-free chains, plastic chains, free of charge-movement chains, specialty chains and British common chains. ASME/ANSI regular chains are offered in huge and little pitch, double pitch and leaf variations. Roller chains are utilized in foodstuff packaging, forklift vehicles, oilfield drilling, bikes, conveyors and electricity transfer programs. EP Team has improved its company lines to consist of Electricity Transmission Models and Elements, Automotive Parts and Materials Managing Methods.

Product parameters

Commodity  tapered roller bearings
Materials Chrome steel  GCR15

Depth:

Inch Series Tapered Roller Bearing
Bearing No. demension    
d D T B C R r    
11590/11520 fifteen.875 42.862 14.288 fourteen.288 nine.525 1.six one.6    
LM11749/10 17.462 39.878 13.843 14.605 10.688 1.two 1.two    
LM11949/10 19.05 forty five.237 15.494 16.637 twelve.065 one.2 1.2    
A6075/A6175 19.05 forty nine.225 21.209 19.05 17.462 1.two 1.6    
12580/12520 twenty.638 49.225 19.845 19.845 15.875 one.five one.five    
LM12749/ten 21.987 forty five.237 fifteen.494 16.637 twelve.?065 1.2 1.2    
LM12749/eleven 21.986 45.794 15.494 sixteen.637 12.065 one.two 1.2    
M12649/ten 21.forty three 50.005 17.526 18.288 13.ninety seven one.2 one.two    
1280/1220 22.225 fifty seven.fifteen 22.225 22.225 17.462 .8 one.6    
1755/1726 22.225 56.896 19.368 19.837 fifteen.875 1.2 1.2    
7093/7196 23.812 fifty.005 13.495 14.26 nine.525 one.5 1    
7097/7196 twenty five 50.005 thirteen.495 fourteen.26 twelve.seven one 1.two    
7100/7204 25.four fifty one.994 15.011 14.26 twelve.seven 1 1.two    
1780/1729 25.4 fifty six.896 19.368 19.837 fifteen.875 .8 1.three    
L44643/ten twenty five.four fifty.292 14.224 14.732 10.668 one.two one.two    
M84548/10 twenty five.four 57.15 19.431 19.431 14.732 one.5 1.5    
15101/15243 twenty five.four sixty one.912 19.05 twenty.638 fourteen.288 .eight two    
7100/7196 twenty five.4 50.005 thirteen.495 14.26 nine.525 1.1 one    
7100/7204 twenty five.four 51.994 15.011 14.26 12.7 one 1.two    
15101/15245 twenty five.4 sixty two 19.05 twenty.638 14.282 three.six 1.two    
L44649/ten 26.988 fifty.292 fourteen.224 fourteen.732 10.668 3.6 one.2    
2474/2420 28.575 68.262 22.225 22.225 17.462 .eight 1.six    
2872/2820 28.575 seventy three.571 22.225 22.225 seventeen.462 .8 3.2    
15113/15245 28.575 62 19.05 20.638 14.288 .eight 1.two    
L45449/ten 29 50.292 14.224 14.732 ten.668 three.6 1.two    
15116/15245 thirty.112 62 19.05 twenty.638 14.288 one one.2    
M86649/10 thirty.162 64.292 21.432 31.432 sixteen.sixty seven one.six 1.6    
M88043/10 thirty.213 sixty eight.262 22.225 22.225 17.462 2.four one.six    
LM67048/10 31.seventy five 69.012 19.845 19.583 15.875 three.five one.3    
2580/twenty 31.75 66.421 25.four 25.357 twenty.638 .eight 3.2    
15126/15245 31.seventy five 62 19.05 twenty.638 14.288 .8 1.2    
HM88542/ten 31.75 seventy three.571 29.37 27.783 23.02 one.two three.2    
M88048/10 33.338 sixty eight.262 22.225 22.225 seventeen.462 .eight 1.6    
LM48548/ten 34.925 sixty five.088 eighteen.034 18.288 13.ninety seven sp one.2    
HM88649/ten 34.925 72.233 twenty five.four twenty five.4 19.842 two.4 two.4    
L68149/10 34.98 fifty nine.131 15.875 sixteen.764 11.938 sp 1.two    
L68149/eleven 34.98 fifty nine.975 fifteen.875 sixteen.764 eleven.938 sp 1.two    
HM88648/ten 35.717 seventy two.233 twenty five.4 25.four 19.842 three.6 2.four    
HM89449/ten 36.512 76.two 29.37 28.575 23.05 3.5 three.three    
JL69349/ten 38 sixty three seventeen 17 thirteen.five sp sp    
LM29748/ten 38.one sixty five.088 eighteen.034 18.288 13.97 sp 1.two    
LM29749/ten 38.1 sixty five.088 18.034 18.288 13.97 2.three one.three    
LM29749/eleven 38.1 sixty five.088 19.812 eighteen.288 15.748 2.four one.two    
418/414 38.1 88.501 26.988 29.083 22.225 three.six 1.6    
2788/twenty 38.one 76.2 23.812 25.654 19.05 73 90.5    
25572/25520 38.one 82.931 23.812 twenty five.4 19.05 .8 .eight    
LM300849/eleven ten.988 67.975 seventeen.5 18 13.5 sp 1.5    
LM501349/10 41.275 73.431 19.558 19.812 14.732 three.six .eight    
LM501349/14 41.275 73.431 21.43 19.812 16.604 three.6 .8    
18590/20 forty one.275 eighty two.fifty five 26.543 twenty five.654 twenty.193 3.six 3.two    
25577/twenty 42.875 eighty two.931 23.812 25.four 19.05 three.six .8    
25580/20 44.forty five 82.931 23.812 25.4 19.05 3.5 .8    
17787/31 forty five.23 seventy nine.985 19.842 20.638 15.08 2 one.three    
LM603049/eleven 45.242 seventy seven.788 19.842 19.842 fifteen.08 3.6 .8    
LM157149/10 forty five.242 73.431 19.558 19.812 fifteen.748 3.6 .eight    
25590/twenty 45.618 82.931 23.812 25.four 19.05 three.5 .8    
LM503349/ten 45.987 seventy four.976 eighteen 18 14 two.4 one.six    
JLM104948/10 50 eighty two 21.501 twelve.501 seventeen three .five    
LM10949/11 50.8 eighty two.55 21.fifty nine 22.225 16.five three.six 1.two    
28KW01G 28 fifty.292 fourteen.224 16.667 10.7 two one.three    
28KW02G 28 fifty two 15.8 18.5 twelve two 1.3    
28KW04G 28 50.292 fourteen eighteen.65 ten.668 2 1.three    
31KW01 31.seventy five 53.975 15.three fourteen.nine eleven.nine 2 1.3    

Solution particulars
The inner and outer ring racewavs and rollers of the tapered roller bearing are created with a taper so that the area planes of the raceways and roller axis meet at a position. The rollers are quided by a flange on the interior ring. Outer ring, inner ring and roller assembly. The non-separable interior ring and roller assembly is known as the “cone”, and the outer rina is referred to as the “cup”. Internal clearance is set up durina mounting by the axial situation of the cone relative to the cup.

Software

Our firm

In 2006, David Ding graduated from university and entered the bearing organization at the age of 22. He started from the bearing production, studied the bearing production approach and technology, then transferred to the firm’s revenue office, produced the intercontinental marketplace, served consumers from all more than the world and domestic trading organizations, and was unanimously recognized and praised by customers.

Starting from “zero”, in purchase to supply much better and flexible providers to consumers, HangZhou Key Seiko Areas (bearing) Co., Ltd. was established, which is located in HangZhou, ZheJiang Province, the world bearing distribution heart, with special geographical advantages. Relying on the positive aspects of regional industrial chain, we can make high performance bearing items with specialist technological innovation. At the identical time, by means of much more than ten years of accumulation and summary, we can give the mo EPT expert financial bearing answers for foreign buyers and domestic exporting firms.

Our business mainly generates automotive bearings, including automotive wheel hub bearings (unit), automotive clutch launch bearings, automotive tensioner & loafer bearings, wheel bearing restore kits and automotive generator bearings.They are mostly appropriate for Toyota, Mitsubishi, Nissan, Isuzu, Mazda, Daewoo, Kia, Hyundai, Volkswagen, Audi, Mercedes Benz, BMW, Ford, GM, Volvo and EPT versions. Also we an can create OEM in accordance with customers’ samples or drawings. Now our products are mostly exported to Middle East, Central Asia, Southea EPT Asia, South America, Africa, Russia, Europe and EPT nations and locations. The approximated turnover in 2571 is more than 5 million US dollars.

We have the import and export right, with SGS certification and created-in-china field certification ! we are Audited Supplier of MIC.  The impartial model “RIME MAX” car bearings is really popular all above the world. Our organization tenet is “serving buyers with total heart”.”Let buyer content is our greatest purpose”. Our perform philosophy is  “detai EPT figure out accomplishment or failure and perspective establishes almost everything!”

David Ding, 36 years aged in 2571, hopes that we can comprehend our desire with each other! Get the future with our professional support!

Good quality inspection 
 

Manufacturing facility tour

Customer opinions


Our services

1. OEM EPT welcome: Solution, Bundle …
2. Sample purchase
3. We will reply you for your inquiry in 24 hours.
4. Following sending, we will monitor the goods for you once each and every two days, until you get the merchandise. When you received the
products, te EPT them, and give me a opinions. If you have any concerns about the issue, get in touch with with us, we will provide
the solve way for you.
Packaging & transportation
A1:  Plastic paper +  kraft paper +  outer carton + Nylon bag 
A2:  Tube package deal + outer carton + Nylon bag
A3:  Single box+outer carton+pallets
A4: According to your requirement.

FAQ

1. Solution packaging?
Single carton carton wood pallet

2 .The manufacturing cycle of the product?
Place specific 1 working day
Normal merchandise 7-thirty times
Personalized items 30-40 times

three.Solution lead time?
three-20 days with much less quantity
Big number of thirty-forty five days

4What is the main marketplace?
Europe South The united states Center Ea EPT Africa

5 What are our advantages?
Wonderful services!
Reply speedily!
Real merchandise photographs!
Generate potential with services!
 

The use of first equipment manufacturer’s (OEM) portion numbers or trademarks , e.g. CASE® and John Deere® are for reference reasons only and for indicating item use and compatibility. Our firm and the detailed substitute areas contained herein are not sponsored, approved, or manufactured by the OEM.

China Roller chain and sprocket manufacturer High forklift chain anchor pin China in Cartagena Colombia  Quality 32322 Single Row Metric Taper Roller Bearing with ce certificate top quality low price

China Roller chain and sprocket manufacturer High forklift chain anchor pin China in Cartagena Colombia  Quality 32322 Single Row Metric Taper Roller Bearing with ce certificate top quality low price

China Roller chain and sprocket manufacturer High forklift chain anchor pin China in Cartagena Colombia  Quality 32322 Single Row Metric Taper Roller Bearing with ce certificate top quality low price

China Roller chain and sprocket manufacturer High forklift chain anchor pin China in Cartagena Colombia  Quality 32322 Single Row Metric Taper Roller Bearing with ce certificate top quality low price

Belt made in China – replacement parts – application of chain conveyor China in Casablanca Morocco Conveyor Return Idler Steel Return Idler Return Roller with ce certificate top quality low price

Belt  made in China - replacement parts - application of chain conveyor China in Casablanca Morocco  Conveyor Return Idler Steel Return Idler Return Roller with ce certificate top quality low price

We – EPG Team the most significant Chain and agricultural gearbox factory in China with 5 different branches. For much more particulars: Cellular/whatsapp/telegram/Kakao us at: 0086-13083988828

If you are interested in any of our merchandise or would like to go over a prospective purchase, make sure you feel totally free to contact us. ISO EPG has been successfully certified by ISO9002 Good quality Administration Method, ISO9001 High quality Management Technique, API certificate, ISO/TS16949:2002 and ISO10012 measurement administration method. 9001:2000 licensed. Stocking distributor of electricity transmission goods including roller & numerous strand roller chains. Items also include brakes, push components, gears, torque limiters, U-joints, pulleys, sheaves, encoders, belt drives, clutches & motors are also available. Company of roller push chains for power transmission programs from general industrial to operations in specialised regions these kinds of as foodstuff processing, weighty development gear, and oil discipline services. Offered in double pitch drive and regular roller chains with solitary and numerous strand configurations. Specs contain .twenty five to 3 in. chain pitch, .13 to 1.88 in. length among sidebars, and .09 to .94 in. pin diameter. Obtainable with features this sort of as circumstance-hardened and armor-cased pins, pre-stressed approach, corrosion and shock resistance, and stainless steel resources. Gives post-sale help providers. Customized Medium Duty Stainless Steel Gravity Roller EPT

Product  Description:

one. As the common product in the gravity rolller sequence, it  is extensively utilized,  especially in the carton conveyring location. e.g airport luggage managing and logistics distribution center.

2. Precesion ball bearing polymer bearing housing , conclude cap sort the bearing unit which is very critical . It is not only for very good looding but also more far more the smooth and peaceful working.

three. The end cap of roller resi EPT du EPT and h2o splash well in operation surroundings.

four. The design and style of pwlymer bearing housing makes it ready to work in some unique atmosphere.

five. The lubrication technique of bearing could be oil lubricating or grease lubricating as necessity

six. Suitable  for the higher speed conveying. Velocity could range in accordance to diameter and duration of roller,  Max.velocity up to 120m/min.

7. Semi-precision bearing for choice, sleek running, be utilized for gravity roller conveyor in low speed(<30m/min)

eight. Temperatue assortment: to +40ºC

Remark:can be personalized

 

 

The use of unique products manufacturer’s (OEM) component figures or emblems , e.g. CASE® and John Deere® are for reference reasons only and for indicating item use and compatibility. Our firm and the detailed alternative parts contained herein are not sponsored, authorized, or produced by the OEM.

Belt  made in China - replacement parts - application of chain conveyor China in Casablanca Morocco  Conveyor Return Idler Steel Return Idler Return Roller with ce certificate top quality low price

Belt  made in China - replacement parts - application of chain conveyor China in Casablanca Morocco  Conveyor Return Idler Steel Return Idler Return Roller with ce certificate top quality low price

Belt  made in China - replacement parts - application of chain conveyor China in Casablanca Morocco  Conveyor Return Idler Steel Return Idler Return Roller with ce certificate top quality low price

Belt  made in China - replacement parts - application of chain conveyor China in Casablanca Morocco  Conveyor Return Idler Steel Return Idler Return Roller with ce certificate top quality low price