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China Best Sales High Radial Load Auto Bearing Tensioner Pulley Bearing for Car Use bearing bronze

Product Description

High Radial Load Auto Bearing Tensioner Pulley Bearing for Car Use

Product Parameters

Product Name: Tensioner Bearing
Model Number: 6005RVA
Outer Diameter(mm) 55
Height(mm) 25
Material Chrome steel
Sealed type OPEN,RZ,2RS,4RS
Tolerance P0,P6,P5,P4,P2
Clearance C2,C0,C3,C4,C5
Noize level Z,Z1,Z2,Z3
Application Automotive Car
OEM Service Accept

Product Description

Tensioner Bearing:

-The bearings are adopted optimized structure designing so that can attain the traits of high temperature resistant, high speed resistant, long life, high speed rotation,impact resistant,high radial load,etc.

-Sealing structure and seals have the traits of high sealing ability, heat-resistant, abrasiveness and also can prevent the leakage of the grease, as they are helpful for lengthening the bearings’ using life.

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Quality Control

Company Profile

ZHangZhouG SHENG YA BEARING TECHNOLOGY CO,LTD.was founded in 1996, covering an area of more than 10,000 square meters, with as sets of more than 50 million yuan, and more than 80 employees, including more than 10 professional and technical personnel with intermediate and senior professional titles. lt specializes in the production of automotive bearings motorcycle bearings, general machine bearings, precision machine tool bearings and home appliance bearings, with an annual production capacity of 10 million sets of small and medium-sized bearings.

Our company undertakes various types of non-standard special-shaped bearings, with a wide variety and fine workmanship. lt is located in Wen.ling, HangZhou City, an important industrial, commercial and tourist city in ZHangZhoug Province, with superior geographical location and convenient transportation.


Q1:ls your company factory or Trade Company?
A:We have our own factory, our type is factory +trade.

Q2: Could you accept OEM and customize?
A:Yes, we can customize it for you according to the sample or drawing.

Q3: What is the MOQ of your company?
A:Our MOQ is normally 10pcs, anyway lower MOQ is also acceptable with a little higher cost, as the more you purchase the cheaper cost you could get.


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After-sales Service: One Year Warranty
Warranty: One Year Warranty
Type: Tensioner Bearing
Material: Chrome Steel
Tolerance: P6
Certification: ISO9001
US$ 2/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

pulley bearing

How do pulley bearings enhance the overall efficiency and functionality of pulley systems?

Pulley bearings play a crucial role in enhancing the overall efficiency and functionality of pulley systems. Here is a detailed explanation of how pulley bearings contribute to these aspects:

1. Reduced Friction:

Pulley bearings are designed to minimize friction between the rotating pulley and its shaft. By providing smooth and low-friction rotation, bearings help reduce energy losses due to friction. This results in improved overall system efficiency as less energy is wasted in overcoming frictional forces. Reduced friction also helps to extend the lifespan of the pulley system by minimizing wear and tear on the components.

2. Smooth and Precise Motion:

The use of high-quality pulley bearings ensures smooth and precise motion in pulley systems. Bearings enable the pulleys to rotate with minimal resistance, allowing for efficient power transmission. This smooth and precise motion is particularly important in applications where accurate positioning or synchronization is required. Pulley systems with well-functioning bearings exhibit improved performance, reliability, and overall functionality.

3. Load Distribution:

Pulley bearings help distribute the loads evenly across the pulley system. As the pulley rotates, the bearings support the weight of the load, preventing concentrated stress on specific components. This load distribution minimizes the risk of component failure and ensures that the pulley system operates efficiently and reliably, even under heavy loads.

4. Misalignment Compensation:

In pulley systems, misalignment between the pulley and the shaft can occur due to manufacturing tolerances or external factors. Pulley bearings are designed to accommodate minor misalignments and angular deviations. By allowing for slight misalignment, bearings help reduce stress on the components and prevent premature wear. This enhances the overall functionality and longevity of the pulley system.

5. Noise and Vibration Reduction:

Properly selected and installed pulley bearings contribute to noise and vibration reduction in pulley systems. Bearings with low vibration levels and effective damping properties minimize the transmission of vibrations throughout the system. This not only improves the comfort and safety of the equipment but also reduces the risk of damage to other components caused by excessive vibrations. Additionally, reduced noise levels contribute to a quieter working environment.

6. Maintenance and Reliability:

Pulley bearings simplify maintenance tasks and enhance the reliability of pulley systems. High-quality bearings require minimal maintenance and provide long service life. This reduces downtime and maintenance costs associated with bearing replacements or repairs. Additionally, reliable bearings contribute to the overall reliability of the pulley system, ensuring continuous operation and minimizing the risk of unexpected failures.

7. Versatility and Adaptability:

Pulley bearings are available in various types, sizes, and designs to accommodate different pulley system requirements. This versatility allows for the adaptation of pulley systems to specific applications, loads, speeds, and environmental conditions. By selecting the appropriate bearing for the specific needs of the pulley system, the overall efficiency and functionality can be optimized.

In summary, pulley bearings enhance the overall efficiency and functionality of pulley systems by reducing friction, enabling smooth and precise motion, distributing loads evenly, compensating for misalignments, reducing noise and vibrations, simplifying maintenance, improving reliability, and providing versatility. Properly selected and well-maintained bearings contribute to the optimal performance and longevity of pulley systems in various applications.

pulley bearing

Can you provide examples of pulley systems that rely on precision pulley bearings?

Precision pulley bearings are essential components in various pulley systems that require accurate and reliable rotation. These systems rely on the high precision and performance of pulley bearings to ensure smooth operation and precise power transmission. Here are some examples of pulley systems that commonly utilize precision pulley bearings:

  • Timing Belt Systems:

Precision pulley bearings are crucial in timing belt systems used in automotive engines, industrial machinery, and other applications where precise synchronization is required. These systems use toothed belts and pulleys to transmit power and ensure precise timing between rotating components such as camshafts, crankshafts, and valves. Precision pulley bearings allow for accurate positioning and synchronized movement of these components, contributing to efficient engine performance and reliable operation.

  • High-Speed Printing and Paper Handling:

In printing presses and paper handling equipment, precision pulley bearings play a vital role in achieving accurate paper feeding, tension control, and precise registration of printed materials. These systems rely on precise rotational movement of pulleys to ensure precise paper handling, printing registration, and consistent print quality. Precision pulley bearings enable smooth and precise paper transport, minimizing paper jams and ensuring reliable operation in high-speed printing applications.

  • CNC Machines:

CNC (Computer Numerical Control) machines utilize precision pulley bearings in their motion control systems. These machines, such as CNC mills, lathes, and routers, require precise positioning and smooth motion of the cutting tools or workpieces. Precision pulley bearings in the drive systems of CNC machines enable accurate movement and positioning of the axes, ensuring high precision and repeatability in machining operations.

  • Robotics and Automation:

Robotic systems and automation equipment often rely on precision pulley bearings for smooth and precise movement. These systems utilize pulleys and belts or other mechanisms for motion transmission in robotic arms, linear actuators, pick-and-place systems, and other robotic components. Precision pulley bearings contribute to accurate and reliable motion control, allowing robots and automated systems to perform tasks with precision and efficiency.

  • Medical Equipment:

Precision pulley bearings are utilized in various medical equipment and devices, such as diagnostic machines, imaging systems, robotic surgery systems, and laboratory automation. These systems require precise movement and positioning for accurate diagnostics, imaging, and surgical procedures. Precision pulley bearings ensure smooth and accurate motion control, contributing to the reliability and effectiveness of medical equipment.

  • Optical Systems:

Precision pulley bearings are used in optical systems, including laser cutting machines, scanning devices, and precision measurement equipment. These systems rely on precise positioning and smooth rotation of pulleys to achieve accurate beam control, scanning, or measurement. Precision pulley bearings enable stable and precise movement, ensuring the desired optical performance and measurement accuracy.

These examples illustrate the diverse range of applications where precision pulley bearings are essential for achieving accurate and reliable rotation in pulley systems. The high precision and performance of these bearings contribute to the overall functionality, efficiency, and quality of various mechanical systems and equipment.

pulley bearing

How do pulley bearings differ from standard or general-purpose bearings?

Pulley bearings and standard or general-purpose bearings have some distinct differences based on their design and intended applications. While both types of bearings serve the purpose of reducing friction and supporting rotational motion, pulley bearings are specifically engineered to meet the unique requirements of pulley systems. Here’s a detailed explanation of how pulley bearings differ from standard or general-purpose bearings:

  • Load Capacity:

Pulley bearings are designed to handle both radial and axial loads generated by pulley systems. Pulleys often experience significant loads due to tension in the system or external forces, and pulley bearings are specifically engineered to accommodate these loads. They have a higher load capacity compared to standard bearings, allowing them to withstand the specific demands of pulley applications.

  • Design and Construction:

Pulley bearings typically have a specific design and construction to meet the requirements of pulley systems. They may feature a deep groove ball bearing design or cylindrical roller bearing design, depending on the specific application. The design of pulley bearings takes into account factors such as load distribution, alignment, and stability within the pulley system.

  • Lubrication:

Pulley bearings may have specific lubrication requirements to ensure optimal performance within the pulley system. Depending on the operating conditions and application, pulley bearings may require special lubricants that can withstand the loads, speeds, and environmental factors specific to pulley systems.

  • Sealing and Protection:

Pulley bearings often come with enhanced sealing and protection features to prevent the ingress of contaminants such as dirt, dust, and moisture. Pulley systems may operate in harsh environments or encounter debris, and the additional sealing and protection help to maintain the integrity and performance of the bearings in such conditions.

  • Operating Speed:

Pulley bearings are designed to accommodate the specific operating speeds of pulley systems. Depending on the application, pulley systems may operate at high speeds, and pulley bearings are engineered to handle the centrifugal forces, maintain stability, and prevent excessive heat generation associated with high-speed rotations.

  • Application-Specific Features:

Pulley bearings may include application-specific features to enhance their performance in pulley systems. These features can include specialized cage designs, surface treatments, or coatings that improve wear resistance, reduce friction, or provide additional protection against corrosion or wear due to the unique demands of pulley applications.

In summary, pulley bearings differ from standard or general-purpose bearings in terms of their load capacity, design and construction, lubrication requirements, sealing and protection features, operating speed capabilities, and application-specific features. These differences allow pulley bearings to meet the specific demands of pulley systems, ensuring reliable performance, extended service life, and efficient power transmission in pulley applications.

China Best Sales High Radial Load Auto Bearing Tensioner Pulley Bearing for Car Use   bearing bronzeChina Best Sales High Radial Load Auto Bearing Tensioner Pulley Bearing for Car Use   bearing bronze
editor by CX 2024-05-15

China wholesaler Used for Kamaz Trucks Belt Pulley of Front Axle Retail Bearing Single Row pulley alternator

Product Description

20mm Drawn Cup Needle Roller Bearing HK2016 HK2571


Needle roller bearings (needle bearing) is a cylindrical roller with a roller bearing, relative to its diameter, roller both thin and long. This is called needle roller. Despite having a smaller cross-section, has a higher load bearing capacity, equipped with a thin and long needle bearing roller (roller diameter D2.5, L is the length of the roller), therefore radial structure is compact, its diameter size and load capacity and other types of bearings, minimum diameter, especially for radial mounting dimensions restricted support structure.

According to different occasions, can be used without inner ring of the bearing or needle roller and cage assembly, when the surface of the journal bearing surface and shell holes as bearing directly match the outer rolling surface, in order to ensure the load capacity and operating performance and have the same ring bearing, shaft or housing bore raceway surface hardness, machining accuracy and surface quality should be similar roller bearing rings. Such bearings can only bear radial load.

Needle roller bearings are widely used in cars, compressors, construction, electric motors, food industry, home appliances etc. As a rolling element, it turns the world.


Product Description


Drawn Cup Needle Roller Bearing HK384825 TA 3825 Size 38*48*25mm for baw BAW




Needle Roller Bearings




Chrome Steel


Plastic Bag and Box

Payment Item

T/T ,Western Union , Paypal ,Credit card

Delivery time


1.Bearing Specifications :
Needle roller bearings use long, thin cylindrical rollers to support radial loads. These needle rollers have a length that is
typically 3 to 4 times its diameter. Needle roller bearings have a thinner cross section than other roller bearings and are ideal for limited-space applications that require carrying heavy loads. Drawn cup needle roller bearings have a deeply drawn, thin-walled outer ring. Caged drawn cup units contain a one-piece cage to guide and retain the rollers. Full-complement drawn cup units include the maximum number of rollers that can be retained by the outer shell. The drawn design allows for cost-effective accommodation of heavy radial loads. Needle roller and cage assemblies do not contain inner or outer rings. Instead, the self-contained bearing components work with a shaft or housing bore used as a raceway.


Product Parameters


oduct Name

Needle Roller Bearing



Model Number




Quality Control Process


2.Windage test


4.Rotary test

5.Greasing and gland

6.Noise inspection

7.Appearance inspection

8.Rust prevention

9.Product packaging


Medical equipment,cryogenic engineering,optical instrument,high-speed motor,printing machinery,food processing machinery.


Our Advantages

Advantages of needle roller bearings

Needle roller bearings are equipped with thin and long rollers. Therefore, the radial structure is compact.

When the inner diameter and load capacity are the same as other types of bearings, the outer diameter is the smallest. It is especially suitable for the support structure with limited radial installation size.

Needle roller bearings should be combined with bearing rings and applications depending on the application occasions, machining accuracy and surface quality




Product Application

2.Application of Bearing :
1.Needle roller bearing: used in automobile engine, transmission, crawler wheel of excavator, compressor, crane, etc.2.Combined needle roller bearing is widely used in machine tools, metallurgical machinery, textile machinery, printing machinery and other mechanical equipment, and can make the mechanical system design very compact and smart.

Company Profile


Packaging & Shipping

1) Inner Plastic Bag+ Paper Box + Carton(+Pallet);  
2) Small sizes:Plastic Tube + Carton  
3) Big sizes:Wooden Case    
1)Less than 45 KGS, we will send by express. (Door to Door, Convenient)
2)Between 45 – 200 KGS, we will send by air transport. (Fastest and safest, but ?expensive )
3)More than 200 KGS, we will send by sea. (Cheapest and usual) 


Q: Are you trading company or manufacturer ?

 A: We are factory.We have our own brand:.If you interested in our product,I can take you to visit our factory.

 Q: How long is your delivery time?
 A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is  according to quantity.

Q: Where is your factory located? How can I visit there?
 A: Our factory is located in ZheJiang Province,You can take the high-speed rail or plane to visit.

Q: Do you provide samples ? it is free charge?
 A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q:The MOQ is how much?
 A: About ordinary standard type of bearing ,We have rich inventory,not have MOQ,if your need a 
     product is Non-standard size,need customize,we will according the product size to determine the MOQ.


/* 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

Cage: Without Cage
Rows Number: Single
Load Direction: Radial Bearing
Style: With Inner Ring
Material: Bearing Steel
Type: Open
US$ 0.01/Set
1 Set(Min.Order)

Request Sample

bearing pulley

What environmental factors should be considered when using bearing pulleys outdoors?

When using bearing pulleys outdoors, several environmental factors should be taken into consideration to ensure optimal performance and longevity of the pulley system. Here are some important environmental factors to consider:

1. Temperature and Climate:

Outdoor environments can experience a wide range of temperatures and climate conditions. Extreme heat or cold can affect the performance and lifespan of bearings and pulleys. It is essential to choose bearings and lubricants that can withstand the anticipated temperature range and to provide appropriate insulation or ventilation if necessary.

2. Moisture and Corrosion:

Outdoor environments often expose bearing pulleys to moisture, rain, humidity, and other corrosive elements. Corrosion-resistant materials, such as stainless steel or coated bearings, should be used to prevent rust and deterioration. Regular inspection and maintenance, including cleaning and re-lubrication, can help mitigate the effects of moisture and corrosion.

3. Contaminants and Particles:

Outdoor settings may contain dust, dirt, sand, or other particles that can enter the bearing pulleys and cause damage or increased wear. Proper sealing and protective measures, such as shields or seals, should be implemented to minimize the ingress of contaminants. Regular cleaning and inspection are necessary to remove any accumulated debris.

4. UV Exposure:

Exposure to ultraviolet (UV) radiation from sunlight can degrade certain materials and lubricants over time. Bearing pulleys used outdoors should be made of UV-resistant materials or be protected with coatings or covers that can withstand prolonged sun exposure. UV-resistant lubricants should also be used to maintain optimal performance.

5. Outdoor Debris and Obstacles:

Outdoor environments may have additional challenges such as falling leaves, branches, or other debris that can interfere with the proper operation of bearing pulleys. Regular inspection and cleaning are necessary to remove any obstructions that could affect the belt alignment or cause pulley damage.

6. Vibration and Wind Loads:

Outdoor environments often involve exposure to vibrations and wind loads. These factors can impact the stability and performance of bearing pulleys. Proper anchoring and reinforcement of the pulley system can help mitigate the effects of vibrations and wind loads, ensuring reliable operation.

By considering these environmental factors and implementing appropriate measures, such as selecting the right materials, providing adequate sealing and protection, and conducting regular maintenance, the performance and lifespan of bearing pulleys used outdoors can be optimized. It is recommended to consult manufacturers’ guidelines, industry standards, and experts in bearing technology for specific recommendations based on the environmental conditions and requirements of the outdoor application.

bearing pulley

Can bearing pulleys withstand heavy loads and high-speed rotations?

Yes, bearing pulleys are designed to withstand heavy loads and high-speed rotations, provided that they are selected and used appropriately for the specific application requirements. Here are some key factors to consider:

1. Load Capacity:

Bearing pulleys are available in various load capacities, ranging from light-duty to heavy-duty options. The load capacity of a pulley depends on factors such as its size, construction, bearing type, and material. It is crucial to select a pulley with an adequate load rating that can handle the expected loads in the application.

2. Bearing Type:

The type of bearing used in the pulley plays a significant role in determining its ability to withstand heavy loads and high-speed rotations. Common types of bearings used in pulleys include deep groove ball bearings, angular contact bearings, and cylindrical roller bearings. These bearings are designed to handle radial and axial loads, providing robust support for the pulley.

3. Material and Construction:

The material and construction of the pulley itself also contribute to its load-bearing capacity. Pulleys are commonly made from materials such as steel, cast iron, aluminum, or engineered plastics. The choice of material depends on factors such as load requirements, durability, and environmental conditions.

4. Proper Installation:

To ensure the pulley can withstand heavy loads and high-speed rotations, it is crucial to follow proper installation practices. This includes correctly aligning the pulley, ensuring proper tensioning of belts, and securely mounting the pulley on the shaft. Improper installation can lead to increased stress on the pulley and bearings, potentially resulting in premature failure.

5. Lubrication and Maintenance:

Regular lubrication and maintenance are essential for the optimal performance of bearing pulleys under heavy loads and high-speed rotations. Adequate lubrication reduces friction, dissipates heat, and helps prevent premature wear. Following the manufacturer’s recommendations for lubrication intervals and using the appropriate lubricant is crucial.

It is important to consult the manufacturer’s specifications and guidelines to ensure that the selected bearing pulleys are suitable for the specific application requirements, including the anticipated loads and operating speeds. By choosing the right pulley and implementing proper maintenance practices, bearing pulleys can effectively withstand heavy loads and high-speed rotations, providing reliable and efficient operation.

bearing pulley

How do bearing pulleys reduce friction and enhance the efficiency of systems?

Bearing pulleys play a crucial role in reducing friction and enhancing the efficiency of mechanical systems. Let’s explore how bearing pulleys achieve these benefits:

1. Friction Reduction:

Bearing pulleys incorporate bearings, typically ball bearings or roller bearings, into their design. These bearings are specifically engineered to minimize friction between the rotating pulley wheel and the axle or shaft on which it rotates. The bearings provide a low-friction interface that allows the pulley wheel to rotate smoothly with minimal resistance. By reducing friction, bearing pulleys prevent unnecessary energy losses due to heat generation and mechanical wear.

2. Smooth Operation:

The presence of bearings in pulleys ensures smooth operation of mechanical systems. Without bearings, the contact between the pulley wheel and the axle or shaft would result in increased friction and uneven motion. Bearings enable the pulley wheel to rotate with reduced friction, resulting in smooth and consistent operation. This smooth operation translates to improved system performance and reduced wear on the pulley and other components.

3. Energy Efficiency:

Bearing pulleys contribute to the energy efficiency of mechanical systems. By reducing friction, they minimize the amount of energy required to overcome resistance and rotate the pulley wheel. This improved energy efficiency can result in reduced power consumption and operating costs. In large-scale industrial applications where pulley systems are extensively used, the energy savings achieved through bearing pulleys can be significant.

4. Extended Lifespan:

The friction reduction provided by bearing pulleys helps extend the lifespan of the system. By minimizing frictional forces, bearing pulleys reduce the wear and tear on the pulley wheel, axle, and other components. This leads to less frequent maintenance, fewer component replacements, and increased durability of the system. The extended lifespan of the system translates to cost savings and improved reliability.

5. Load Distribution:

Bearing pulleys distribute loads more evenly across the system, enhancing efficiency. The bearings within the pulley share the weight and forces applied to the pulley, ensuring that the load is distributed over a larger surface area. This load distribution capability prevents excessive stress on specific points and reduces the risk of component failure. By evenly distributing the load, bearing pulleys optimize the efficiency and performance of the system.

In summary, bearing pulleys reduce friction by incorporating bearings into their design, enabling smooth operation and efficient power transmission. The friction reduction achieved by bearing pulleys enhances the energy efficiency of systems, extends the lifespan of components, and ensures the optimal distribution of loads. These benefits make bearing pulleys indispensable components in mechanical systems, improving their overall efficiency and performance.

China wholesaler Used for Kamaz Trucks Belt Pulley of Front Axle Retail Bearing Single Row   pulley alternatorChina wholesaler Used for Kamaz Trucks Belt Pulley of Front Axle Retail Bearing Single Row   pulley alternator
editor by CX