Product Description

40*90*32mm NUTR4090 NUTR40PPA Cam Follower Bearing Yoke Type Track Roller Bearing NUTR40-PP-A

Cylindrical Roller Bearings


Spherical Roller Bearings
Needle Roller Bearings
Tapered Roller Bearings


Crossed Slewing bearing Thrust Roller Bearings


Detailed Photos


Products Details

HOJE offers a wide range of needle roller bearings including needle roller & cage assemblies, drawn cups,s and solid needle roller bearings. They can also be specified as cam followers and track roller bearings by applications. The major application markets include automotive, consumer products, and general industrial goods. Conveyor, Power Tool, Money Counter, and Home Appliance.

(K, K‥T2, K‥S, K‥ZW, KMJ, KMJ‥S, KJ‥S, KV‥S,PCJ….. Series)

A needle roller and cage assembly include needle rollers and a cage that guides and retains the rollers.
These assemblies use both the shaft and housing as raceway surfaces. Consequently, the cross-sectional thickness of the assembly is small, roughly equivalent to the diameter of the needle rollers. 
Because this bearing type has no inner or outer rings, the installation is much easier.
These assemblies are available in both single-row and double-row configurations.
As long as the tolerance limits of the shaft and housing are satisfied, the bearing radial internal clearance can be adjusted.

This bearing type is used for connecting rods in compact and mid-sized internal combustion engines (e.g. outboard engines and multipurpose engines), as well as reciprocating compressors.


This bearing type includes an outer ring and needle rollers, which are both drawn from special thin steel plates by precision deep drawing, and a cage that guides the needle rollers precisely.
— This bearing product comprises an outer ring formed through a precision deep-drawing process from a thin special steel blank; needle rollers; and a cage that guides the rollers.
— A hardened and ground shaft or inner ring (IR Series) is used as the raceway.
— This bearing needs no axial clamping due to easy installation and a press-fit in the housing. 
— Both a closed-end type to close around the end of the shaft and an open-end type are available.
— Furthermore, a type with a seal installed on a single side or on both sides is also available.
— The standard type includes a needle roller and cage assembly. In addition to this type, a special type with full complement rollers is available as an option.


(RNA48, RNA49, RNA59, RNA69, NK, NKS,NA48, NA49, NA59, NA69, NK+IR, NKS+IR ……Series)

This product mainly includes machined components – an outer ring and inner ring, needle rollers, and a cage that guides the rollers. In this bearing, the cage or needle rollers are guided by the rib or side plate of the outer ring. Consequently, the roller and cage assembly cannot be separated from the outer ring.
— Available in both metric dimensions and inch dimensions.
— This product is best-suited to a space-saving design due to its low section height, and large load capacity. 
— Another advantage is high rigidity and high bearing accuracy due to the machined outer ring 
— This bearing can be used with a housing made of light metal, because of its highly rigid outer ring. (Other than NKS small-size products)
— The outer ring has a lubrication hole and lubrication groove. 
— Both single-row and double-row types are available. 
— A type with a seal installed on a single side or on both sides is also available.

(AXK11, AS11, WS811, GS811,811, 812, 893, 874, K811, K812, K893…… Series)

The product is comprised of a needle or cylindrical rollers, a cage that guides and retains the rollers, and a disk-shaped bearing ring, and is capable of holding an axial load in 1 direction. The mounting surface can be used as a raceway surface when the mounting surface is beat-treated and finished. As a result, the bearing can be supplied without bearing ring raceways.
— Space Saving Design: Best-suited to save space because of its small section height and large load capacity.
— Bearing Types: Currently available bearing ring types are AS, WS, GS, and ZS. The AS type consists of a thin steel disk having undergone surface hardening, while the WS, GS, and ZS types are machined.
— Bi-Direction Axial Loading: This bearing can support large axial loads from both sides.
— Application: This complex bearing is designed to support a machine tool precision ball screw.


The track roller bearing is a needle roller bearing with a thick outer ring, which is applied to the cam roller, CZPT roller, eccentric roller, or rocker’s arm. The track roller bearings are mainly categorized into a stud-type track roller bearing (cam follower) and a yoke-type track roller bearing (roller follower). Various types of roller followers and cam followers are available.
— The bearing type with a cage is suitable for comparatively high-speed running because its rollers are guided by the cage. 
— Having more rollers relative to a given size, a full complement roller type boasts greater load capacity.
— The outer surface is available in both spherical (crowning) profile and cylindrical profile. 
— This cam follower (bearing) is selectively available in both metric and inch sizes. 
— The stud is either a recessed head type allowing the use of a screwdriver or a hexagon socket head type so as to be mounted and adjusted easily


Packaging & Shipping


 1)Commercial Bearings packaging: 1pc/plastic bag + color box + carton + pallet
 2)Industrial Bearings packaging 
 3)According to the requirement of customers
 1) T/T:30% deposit, 70% should be paid before shipment.
 2) L/C at sight. (high bank charge, not suggested, but acceptable )
 3) 100% Western Union in advance. (especially for air shipment or small amounts)
 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, but long time )



Company Profile

HangZhou HOJE Bearing Co., LTD Specializing in the manufacture and sales of bearings and bearing accessories, we mainly produce deep groove ball bearings, pillow block bearings, Cylindrical and Spherical Roller Bearings, tapered roller bearings, and related components. Our factory has the most advanced equipment, first-class mechanical professional and technical personnel, and one-stop automatic production from bearing raw materials to finished products. We are willing to provide excellent services for factories that produce industrial equipment, vehicles, electromechanical tools, home appliances, instrumentation, fitness equipment, leisure sports equipment, users of various types of mechanical equipment and civil machinery, and domestic and foreign traders and distributors.

Company Advantages

1. FREE SAMPLES: contact us by email or trade manager, and we will send the free samples according to your request.
2. World-Class Bearing: We provide our customers with all types of bearings of world-class quality.
3. OEM or Non-Stand Bearings: Any requirement for Non-standard bearings is Easily Fulfilled by us due to our vast knowledge and links in the industry.
4. Genuine products With Excellent Quality: Company has always proved the 100% quality products it provides with genuine intent.
5. After-Sales Service and Technical Assistance: Company provides after-sales service and technical assistance as per the customer’s requirements and needs.
6. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain.
7. Cost Saving: We provide long-life, shock-resistant, and high-reliability bearings with excellent quality and better performance. Resulting in increased cost savings.
8. Attending customer queries promptly: We believe that if customers are satisfied then it proves our worth well. Customers are always given quick support.


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Cage: With Cage
Rows Number: Single
Load Direction: Radial Bearing
Style: With Outer Ring, Without Inner Ring
Material: Bearing Steel
Type: Closed
US$ 0/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

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 signs of wear or damage in cam follower bearings, and when should they be replaced?

Cam follower bearings can exhibit signs of wear or damage over time, which may indicate the need for replacement. Let’s explore the common signs of wear or damage in these bearings and discuss when they should be replaced:

1. Increased Noise: Unusual or excessive noise during operation, such as grinding, squeaking, or rumbling sounds, can be an indication of bearing wear. If the noise becomes noticeably louder or changes in pitch, it is advisable to inspect the bearing for potential damage.

2. Abnormal Vibration: Excessive vibration or noticeable changes in vibration patterns can be a sign of bearing wear or misalignment. Excessive vibration can lead to accelerated wear and potential failure of the bearing if not addressed promptly.

3. Irregular Motion: If the cam follower bearing exhibits irregular or inconsistent motion, such as sticking, jerking, or hesitation, it may indicate wear or damage. This can affect the smooth operation of the machinery and lead to decreased efficiency or performance issues.

4. Increased Friction: If the bearing experiences higher levels of friction, it may result in increased heat generation or uneven wear. Excessive friction can lead to premature wear of the bearing surfaces and compromise the overall performance of the machinery.

5. Visible Damage: Inspect the bearing for any visible signs of damage, such as cracks, pitting, spalling, or deformation. These visual indications may suggest that the bearing has reached its operational limits and requires replacement.

6. Loss of Lubrication: Insufficient lubrication or loss of lubricant film can lead to accelerated wear and damage in cam follower bearings. If there are signs of inadequate lubrication, such as dry or discolored surfaces, it is essential to address the lubrication issue and consider replacing the bearing if necessary.

7. Excessive Play or Clearance: Excessive axial or radial play in the bearing, or an increase in the clearance between the bearing components, can indicate wear or damage. Excessive play can affect the precision of motion and compromise the overall performance of the machinery.

When to Replace Cam Follower Bearings:

The exact timing for bearing replacement depends on various factors, including the severity of wear or damage, the criticality of the application, and the manufacturer’s guidelines. However, as a general guideline, cam follower bearings should be replaced under the following circumstances:

  • When any of the above-mentioned signs of wear or damage are observed.
  • If the bearing is approaching or has exceeded its predicted service life based on the manufacturer’s recommendations.
  • When routine inspections reveal significant wear or damage that may compromise the bearing’s performance or safety.
  • During scheduled maintenance or overhaul of the machinery, as part of a proactive replacement strategy.

It is crucial to consult the manufacturer’s guidelines, maintenance manuals, or seek the advice of a qualified engineer or technician to determine the appropriate timing for cam follower bearing replacement in specific applications.

By monitoring the signs of wear or damage, and addressing them promptly, the performance, reliability, and safety of the machinery can be maintained, minimizing the risk of unexpected failures or production disruptions.

cam folllow bearing

What advantages do cam follower bearings offer compared to other bearing types?

Cam follower bearings offer several advantages compared to other bearing types, making them suitable for specific applications where their unique features are beneficial. Here are the key advantages of cam follower bearings:

  • Cam Following Capability:
  • The primary advantage of cam follower bearings is their ability to accurately follow the profile of a cam. This feature allows them to convert the rotary motion of the cam into linear or oscillating motion with precision. The cam follower bearing maintains contact with the cam’s surface, ensuring consistent and controlled movement. This capability is particularly useful in applications where the motion needs to be translated or transformed, such as in cam-driven mechanisms, sliding doors, or lifting systems.

  • High Load Capacity:
  • Cam follower bearings are designed to handle high loads, making them suitable for applications that require robust support and load-carrying capacity. The design of cam follower bearings, especially heavy-duty versions, allows them to withstand heavy radial and axial loads. This makes them suitable for demanding applications such as material handling equipment, automotive systems, and machinery where substantial forces are involved.

  • Shock and Impact Resistance:
  • Cam follower bearings are known for their ability to absorb shocks and impacts due to their robust construction and rolling element design. The rolling elements, whether rollers or needles, distribute the load evenly along their length, minimizing localized stress concentrations. This characteristic enables cam follower bearings to handle sudden changes in load or impact loads without compromising performance or causing premature failure. Applications with dynamic loads or intermittent forces can benefit from the shock-resistant nature of cam follower bearings.

  • Versatile Mounting Options:
  • Cam follower bearings offer versatile mounting options, allowing flexibility in their integration into mechanical systems. They are available in different configurations, including stud-type and yoke-type designs, which offer various mounting possibilities. Stud-type cam followers can be directly attached to a structure or component using a threaded stud, while yoke-type cam followers feature an integral flange that provides guidance and support. This versatility in mounting options makes cam follower bearings adaptable to different system designs and requirements.

  • Suitability for High-Speed Applications:
  • Cam follower bearings are well-suited for high-speed applications due to their rolling element design. The rolling elements, whether cylindrical rollers or needle rollers, reduce friction and enable smooth rolling motion. This allows cam follower bearings to operate at higher speeds while maintaining low heat generation and minimizing wear. Their ability to handle high speeds makes them suitable for applications such as automated machinery, robotics, and automotive systems where rapid and precise motion is required.

  • Compact Design:
  • Cam follower bearings typically have a compact design, which is advantageous in applications where space is limited. The compact size allows for easier integration into tight spaces or assemblies, making them ideal for applications with size constraints. Their small footprint and lightweight construction contribute to overall system efficiency and reduce unnecessary bulk.

In summary, cam follower bearings offer several advantages compared to other bearing types. Their ability to accurately follow the profile of a cam, high load capacity, shock and impact resistance, versatile mounting options, suitability for high-speed applications, and compact design make them a preferred choice in applications that require precise motion control, robust support, and reliable performance.

China Good quality 40*90*32mm Nutr4090 Nutr40PPA Cam Follower Bearing Yoke Type Track Roller Bearing Nutr40-PP-a   with Best SalesChina Good quality 40*90*32mm Nutr4090 Nutr40PPA Cam Follower Bearing Yoke Type Track Roller Bearing Nutr40-PP-a   with Best Sales
editor by CX 2024-05-07