Product Description

Needle Roller Bearing


High Quality needle roller bearing HK2520 drawn cup needle roller bearing

Applicable Industries

Hotels, Building Material Shops, Manufacturing Plant, Printing Shops, Construction works , Energy & Mining, Food & Beverage Shops, Advertising Company



Brand Name


Model Number


Precision Rating

P2 P4 P5 P6 P0

Seals Type


Number of Row

Single row

Place of Origin


Product Description

Definition of Needle roller bearings

Needle roller bearings are roller bearings with cylindrical rollers. The rollers are thin and long relative to their diameter.
This type of roller is called a needle roller. Despite having a smaller cross-section, the bearing still has a higher load bearing
capacity. The radial structure is compact. When the inner diameter size 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.

product name

 Needle roller bearing





number of row

single row



OEM Customized Services

Uses of self-aligning ball bearings

Installed in combination with UC bearings

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

Detailed Photos



Production processes

During the customer’s order production process, we carry out processing inspection, the purpose is to do better quality control


Product Application

Application of needle roller bearings

The needle bearings have a small cross-sectional height, which helps to ensure that the machine is both light and compact. Therefore, they have a wide range of applications, including automobiles, motorcycles, motors, machine tools, aerospace equipment, office equipment and other industrial machinery.

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

cam folllow bearing

Can you explain the role of seals and shields in protecting cam follower bearings from contaminants?

Seals and shields play a crucial role in protecting cam follower bearings from contaminants. They act as barriers, preventing the entry of harmful particles, liquids, or gases into the bearing assembly. Let’s explore the role of seals and shields in detail:


Seals are components designed to create a physical barrier between the internal components of the cam follower bearing and the external environment. They help to prevent the ingress of contaminants, such as dust, dirt, moisture, and other foreign substances. The role of seals in protecting cam follower bearings from contaminants includes:

  • Dust and Dirt Protection: Seals act as a shield against airborne dust and dirt particles that can enter the bearing and cause abrasive wear, premature fatigue, or damage to the rolling elements and raceways. They keep the interior of the bearing clean and free from harmful contaminants.
  • Moisture and Liquid Protection: Seals provide a barrier against moisture and liquid ingress, protecting the bearing from corrosion, rust, and lubricant contamination. They help maintain the integrity of the lubricating film and prevent the formation of corrosive substances that can degrade the bearing surfaces.
  • Chemical and Gas Protection: Certain applications may involve exposure to chemicals or gases that can be detrimental to the bearing’s performance and longevity. Seals are designed to resist the penetration of these substances, safeguarding the bearing from chemical attack or degradation.
  • Grease Retention: Seals help retain lubricating grease within the bearing, preventing it from leaking out and ensuring proper lubrication of the rolling elements and raceways. This promotes smooth operation, reduces friction, dissipates heat, and extends the bearing’s service life.


Shields, also known as retainers or covers, are protective components that shield the rolling elements and raceways of the cam follower bearing from external contaminants. They are typically made of metal or plastic and are positioned close to the bearing’s inner ring or stud. The role of shields in protecting cam follower bearings from contaminants includes:

  • Physical Barrier: Shields act as a physical barrier, intercepting solid particles, debris, or larger contaminants that could otherwise come into contact with the rolling elements and raceways. They prevent direct contact, reducing the risk of damage, wear, or premature failure of the bearing.
  • Easy Access for Lubrication: Shields are often designed with small openings or reliefs to allow for easy access to lubrication points. This facilitates the replenishment or relubrication of the bearing without the need for shield removal, ensuring continued protection against contaminants while maintaining proper lubrication.
  • Enhanced Bearing Performance: By protecting the rolling elements and raceways, shields help maintain the precision and performance of the cam follower bearing. They minimize the risk of surface damage, maintain proper geometry, and reduce the potential for increased friction or vibration that could affect the bearing’s accuracy and efficiency.

Both seals and shields are essential in protecting cam follower bearings from contaminants, ensuring reliable operation and extending the bearing’s service life. The specific type and design of seals and shields may vary depending on the application requirements, environmental conditions, and the level of protection needed. It is important to select the appropriate sealing and shielding solutions to match the operating conditions and contaminants present in the application.

cam folllow bearing

What are the challenges and solutions for managing radial loads and eccentric motion in cam follower bearings?

Managing radial loads and eccentric motion in cam follower bearings can pose challenges in certain applications. Let’s discuss these challenges and explore potential solutions:


1. Radial Load Management: Cam follower bearings often experience significant radial loads, which can cause increased stress, wear, and potential failure if not properly managed. The challenges include:

  • High radial forces due to the application requirements or external factors.
  • Uneven distribution of load across the bearing surface.
  • Impact or shock loads that exceed the bearing’s capacity.

2. Eccentric Motion: Eccentric motion occurs when the centerline of the cam follower bearing deviates from its ideal path during operation. This can lead to issues such as:

  • Uneven wear on the bearing surface.
  • Inefficient transmission of motion or power.
  • Increased friction and heat generation.


To address the challenges associated with radial loads and eccentric motion in cam follower bearings, several solutions can be implemented:

1. Bearing Selection: Choosing the appropriate cam follower bearing based on the application requirements is crucial. Considerations include:

  • Selecting bearings with higher radial load capacity and appropriate load ratings.
  • Opting for bearings made of materials with high strength and wear resistance.
  • Using bearings with specialized designs, such as crowned outer rings or larger contact areas, to distribute the load more evenly.

2. Lubrication: Proper lubrication is essential for managing radial loads and reducing friction. Effective lubrication helps:

  • Minimize wear and prevent surface damage.
  • Reduce friction and heat generation.
  • Absorb shock and distribute loads more evenly.

3. Mounting and Alignment: Correct mounting and alignment of cam follower bearings play a vital role in managing radial loads and eccentric motion. Consider the following:

  • Ensuring proper alignment of the bearing with the cam profile or track to minimize eccentric motion.
  • Applying appropriate preloading or clearance adjustment to optimize load distribution.
  • Using precision mounting techniques to minimize misalignment and maximize the bearing’s load-carrying capacity.

4. Damping and Shock Absorption: In applications with significant shock loads or vibrations, incorporating damping and shock absorption mechanisms can help:

  • Reduce the impact of sudden load changes.
  • Minimize the transmission of vibrations to the bearing.
  • Provide additional protection against excessive loads and eccentric motion.

5. Regular Maintenance and Inspection: Implementing a proactive maintenance schedule and performing regular inspections can help identify and address issues early. This includes:

  • Monitoring the bearing’s performance and checking for signs of wear, damage, or misalignment.
  • Replacing worn or damaged bearings promptly.
  • Applying appropriate lubrication and ensuring it is replenished as needed.

By considering these solutions, managing radial loads and eccentric motion in cam follower bearings can be effectively addressed, leading to improved performance, extended bearing life, and reliable operation in various applications.

cam folllow bearing

How does proper lubrication impact the performance and longevity of cam follower bearings?

Proper lubrication plays a critical role in enhancing the performance and longevity of cam follower bearings. Adequate lubrication helps reduce friction, dissipate heat, prevent wear, and minimize the risk of damage or premature failure. Let’s explore in detail how proper lubrication impacts the performance and longevity of cam follower bearings:

  • Friction Reduction:
  • Lubrication creates a thin film of lubricant between the rolling elements and the raceways of the cam follower bearing. This lubricating film reduces the friction between the contacting surfaces, allowing for smoother rolling motion. By minimizing friction, proper lubrication helps to optimize the efficiency of the bearing, reduce energy consumption, and minimize heat generation.

  • Wear Prevention:
  • Cam follower bearings are subjected to repeated cycles of loading and unloading, which can lead to surface contact and potential wear. The presence of an appropriate lubricant creates a protective barrier between the rolling elements and the raceways, preventing direct metal-to-metal contact. This lubricating film helps to minimize wear, pitting, and surface damage, thereby extending the bearing’s lifespan.

  • Heat Dissipation:
  • During operation, cam follower bearings generate heat due to friction and the mechanical forces involved. Proper lubrication helps dissipate this heat by carrying it away from the bearing’s contact surfaces. Efficient heat dissipation prevents excessive temperature rise, which can lead to thermal expansion, loss of lubrication properties, and accelerated wear. By maintaining appropriate operating temperatures, proper lubrication contributes to the longevity and reliability of the bearing.

  • Contamination Protection:
  • Lubrication acts as a barrier against contaminants such as dirt, dust, moisture, and other foreign particles. It helps to seal the bearing and prevent the ingress of contaminants into the bearing’s internal components. By keeping the rolling elements and raceways clean, proper lubrication reduces the risk of abrasive wear, corrosion, and damage caused by particle-induced stress concentrations.

  • Corrosion Prevention:
  • In environments where corrosion is a concern, such as high humidity or exposure to corrosive substances, proper lubrication helps protect the bearing against corrosion. The lubricant forms a protective layer that inhibits moisture and corrosive agents from reaching the bearing surfaces. This corrosion prevention capability ensures the integrity of the bearing’s components and prolongs its operational life.

  • Noise and Vibration Reduction:
  • Proper lubrication can contribute to reducing noise and vibration levels in cam follower bearings. The lubricating film helps to cushion the impact and dampen the vibrations caused by the rolling elements. This dampening effect minimizes noise generation and vibration transmission, resulting in smoother and quieter bearing operation.

  • Longevity and Reliability:
  • By providing effective lubrication, cam follower bearings experience reduced friction, wear, and heat, resulting in increased longevity and reliability. Proper lubrication ensures the bearing can withstand heavy loads, high speeds, and demanding operating conditions while maintaining its performance over an extended period. It helps prevent premature failure, minimizes the risk of unplanned downtime, and contributes to the overall productivity of the application.

In summary, proper lubrication is essential for optimizing the performance and longevity of cam follower bearings. It reduces friction, prevents wear, dissipates heat, protects against contamination and corrosion, reduces noise and vibration, and enhances the bearing’s overall reliability. By selecting the appropriate lubricant and following the recommended lubrication intervals, cam follower bearings can operate efficiently, withstand demanding conditions, and provide extended service life.

China high quality Needle Roller Bearing Wheel Cam Follower and Truck Roller Bearing   bearing assemblyChina high quality Needle Roller Bearing Wheel Cam Follower and Truck Roller Bearing   bearing assembly
editor by CX 2024-05-08