China manufacturer Sale-Helpful Package Rna 4920 Rna 4822 Rna 4922 Ran 4824 Needle Roller Bearings with Machined Rings for Auto Parts double row ball bearing

Product Description


We can provide manufacturing capabilities and services of regular bearings for you, or customized non-standard bearings as you required.

  — Dimensions
  — Material
  — Tolerance standard

  — Logo (Laser Marking)
  — Package Design

With over 40 years experience of the bearing manufacturing, we know how to make good bearings with less cost consistently and efficiently.

We use advanced CNC turning, grinding, and superfinishing machines to ensure high, stable, and accurate machining.  All of your goods, from the most economical category, to the highest rated category, will always be manufactured precisely to the standards you require.


Heat treatment is 1 of the crucial processes to ensure high performance of bearing materials. Compared with other manufacturers, we can produce higher quality bearings at smaller cost, with a more flexible and controllable production schedule, and in a shorter time

We have 6 heat treatment production lines.

Bearings are heated uniformly, with small deformation and little/no oxidized decarburization, which can make them have high hardness, high fatigue resistance, good wear resistance, dimensional stability, and excellent mechanical strength.


All our products are characterized by low noise, low friction and long life.  This is due to our attention to the roundness, waviness and surface roughness of bearing raceway.

Our products fully meets the requirements of national and international standards according to the testing result of roughness, roundness, hardness, vibration noise, vibration velocity.

1, Inner package
   Corrosion and Dust Proof PE plastic film  / bag packing + Tube packing, or Wrapping  tape for larger bearings.
2, Corrugated Individual Box
   Our attractive sales-helpful “3-JOYS” package, or as the design of your package.
3, Outer package
  Corrugated carton + Wooden pallet 

  · Constant temperature (20°C) and humidity (RH 52%) warehouse
  · Hundreds of models on hand, short delivery time.



 We are happy to send you free samples of our bearings for field   testing. All transportation costs will be paid by us.

 Please note: Depending on the model and value of samples,   this policy may not apply!

 Please contact our sales staff for details.



To facilitate your payment, we offer a variety of options! 

1, About the lead time.
This depends on several factors, like Is the production schedule tight? Is there a corresponding model in stock, and is there enough of this model in stock? How many pcs of that model would be ordered?
Simply speaking, based on a 20′ GP container load:

If the model your Preferred is Sufficient stock Lead Time
Regular models YES Within 7 days
Regular models NO Within 30 days
Non-regular model NO About 50 days

For accurate estimate, please contact with our sale stuff. Thanks.

2, Minimum order quantity. 

Even just ONE piece of bearing is ok for us.

3, If you don’t know which model is the right choice…

We would like to give you some advise if you like, according to the real situation and demand of your local market. Our purpose is to help you to get proper and right models for your customers, so that you would make a better sales and income finally.

4, Factory Inspection

We surely would welcome you or your representatives to come to our plants or working offices to take a good look and chat with our hardworking CZPT employees. Ask our sales stuff and she/he will arrange that for you.     /* 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: With Cage
Rows Number: Single
Load Direction: Radial Bearing
Style: Without Outer Ring, With Outer Ring, Without Inner Ring, With Inner Ring
Material: Carbon Chromium Steel
Type: Open
US$ 0/Piece
1 Piece(Min.Order)

Request Sample



Customized Request

needle bearing

Role of Needle Bearings in Compact Applications and Limited Space

Needle bearings are essential components in applications that require compact designs and have limited available space. Their unique design characteristics make them particularly suitable for such applications, where traditional bearings might not be feasible. Here’s the role of needle bearings in compact applications:

  • Reduced Radial Profile:

Needle bearings have a compact radial profile due to their cylindrical rollers with a small diameter-to-length ratio. This design allows them to accommodate high radial loads in a confined space without sacrificing load-carrying capacity.

  • Space Optimization:

Applications with limited space, such as small machinery, automotive components, and medical devices, benefit from needle bearings’ ability to provide efficient load support while minimizing the space required.

  • Lightweight Design:

Needle bearings’ lightweight construction is advantageous for applications where minimizing weight is crucial. Their compact size contributes to overall system weight reduction.

  • High Load Capacity:

Despite their small size, needle bearings can handle substantial radial and axial loads. This capability is essential for applications that demand high load-carrying capacity within limited space constraints.

  • Efficient Energy Transfer:

Needle bearings’ efficient energy transfer properties make them suitable for compact applications involving oscillating or reciprocating motions, where minimal energy loss is essential.

  • Precision Movements:

Needle bearings facilitate precise and controlled movements in compact applications, contributing to accurate positioning and operation.

  • Automotive Components:

Needle bearings are used in various automotive components, such as transmissions, engine components, and steering systems, to ensure reliable performance within the limited space available.

  • Robotics and Automation:

In robotics and automation, where space is often restricted, needle bearings enable smooth and accurate movement in robotic arms, pick-and-place systems, and linear actuators.

  • Medical Instruments:

Medical devices and instruments, such as surgical tools and diagnostic equipment, require precise movement in confined spaces. Needle bearings facilitate this precise motion.

  • Consumer Electronics:

Compact electronic devices, such as hard drives, printers, and scanners, benefit from needle bearings’ ability to provide efficient movement and load support in small spaces.

Overall, needle bearings’ compact design, high load capacity, and efficient operation make them invaluable in applications where limited space is a critical consideration. Their contribution to achieving optimal performance within constrained dimensions is essential for various industries and technologies.

needle bearing

Maintenance Practices to Extend the Life of Needle Bearings

Maintaining needle bearings is essential to ensure their longevity, optimal performance, and reliability in various applications. Proper maintenance practices can prevent premature wear, reduce downtime, and enhance overall efficiency. Here are specific maintenance practices that can extend the life of needle bearings:

  • Regular Inspection:

Perform visual inspections of the needle bearings on a routine basis. Check for signs of wear, pitting, contamination, or damage. Early detection allows for timely intervention and replacement if necessary.

  • Cleanliness:

Keep the surrounding environment clean and free from contaminants that can infiltrate the bearing assembly. Dust, dirt, and debris can lead to accelerated wear and reduced bearing life.

  • Lubrication:

Follow the manufacturer’s lubrication recommendations diligently. Adequate lubrication reduces friction, minimizes wear, and dissipates heat. Regularly replenish or replace the lubricant as needed.

  • Correct Lubricant:

Choose the appropriate lubricant for the specific application and operating conditions. Factors like temperature, speed, load, and exposure to contaminants influence the choice of lubricant.

  • Sealing and Protection:

Ensure that the bearing is properly sealed or shielded to prevent contamination. Seals and shields act as barriers against dust, moisture, and other particles that can compromise the bearing’s integrity.

  • Proper Handling:

Handle needle bearings with care during installation, ensuring they’re not dropped or mishandled. Avoid hitting the bearings, as impact forces can cause internal damage or misalignment.

  • Installation Techniques:

Follow recommended installation procedures, using the correct tools and techniques. Improper installation can lead to damage or misalignment, affecting the bearing’s performance.

  • Alignment:

Ensure proper alignment of shafts, housings, and bearing components. Misalignment can lead to increased friction, wear, and premature failure.

  • Temperature Management:

Monitor operating temperatures and ensure they remain within the specified range. Extreme temperatures can affect lubricant viscosity and cause thermal expansion, impacting bearing performance.

  • Load Considerations:

Operate within the recommended load capacity of the bearing. Overloading can accelerate wear and lead to early failure.

  • Regular Maintenance Schedule:

Develop a maintenance schedule that includes regular inspection, lubrication, and cleaning. Adhering to a routine ensures timely interventions and prevents unforeseen failures.

By implementing these maintenance practices, you can maximize the life of needle bearings and optimize their performance in a wide range of applications. Remember that proactive maintenance not only extends bearing life but also contributes to equipment reliability, efficiency, and overall operational success.

needle bearing

Applications and Industries Commonly Using Needle Bearings

Needle bearings, due to their unique design and advantageous characteristics, find applications in a wide range of industries and scenarios where compactness, high load capacity, and efficient motion are essential. Here are some typical applications and industries where needle bearings are commonly used:

  • Automotive Industry:

Needle bearings are used in various automotive components, including engines, transmissions, drive shafts, and wheel hubs. They provide efficient load handling and precise motion, contributing to the performance and reliability of vehicles.

  • Industrial Machinery:

Industrial machinery, such as machine tools, printing presses, textile machines, and conveyors, often rely on needle bearings for their ability to handle high radial loads while maintaining a compact size. These bearings are essential for smooth and accurate motion in industrial processes.

  • Aerospace and Aviation:

In aerospace applications, where minimizing weight and space is critical, needle bearings are used in components like control systems, actuators, landing gear, and flight control surfaces. Their compact design and high load capacity make them suitable for various aircraft systems.

  • Medical Equipment:

Needle bearings are used in medical devices and equipment, including surgical tools, imaging systems, and laboratory equipment. Their precise motion and compact size are essential for maintaining accuracy and efficiency in medical procedures.

  • Consumer Electronics:

Devices such as printers, scanners, cameras, and optical instruments often incorporate needle bearings to achieve smooth and precise movement. These bearings contribute to the overall user experience by delivering accurate functionality.

  • Power Tools:

Power tools like drills, grinders, and saws utilize needle bearings for their ability to withstand heavy loads and provide efficient motion. These bearings contribute to the durability and performance of the tools.

  • Textile Industry:

In textile machinery, needle bearings play a crucial role in maintaining the precise movement required for processes such as weaving, spinning, and knitting. Their ability to handle high loads ensures reliable operation in demanding textile applications.

  • Construction Equipment:

Construction machinery, including excavators, bulldozers, and cranes, use needle bearings to handle heavy loads and provide smooth motion in various mechanical components. These bearings contribute to the efficiency of construction operations.

  • Robotics and Automation:

Needle bearings are essential in robotic systems and automation equipment, where compact size, high load capacity, and precise motion are necessary for efficient operation. They enable accurate movement and positioning in robotic applications.

  • Marine Industry:

In marine environments, needle bearings are used in shipbuilding, offshore platforms, and marine equipment. Their ability to withstand harsh conditions and efficiently handle loads makes them valuable components in marine applications.

These examples demonstrate the versatility of needle bearings and their widespread use across various industries. Their ability to provide efficient load handling and precise motion in compact designs makes them a valuable solution in applications where performance, reliability, and space optimization are paramount.

China manufacturer Sale-Helpful Package Rna 4920 Rna 4822 Rna 4922 Ran 4824 Needle Roller Bearings with Machined Rings for Auto Parts   double row ball bearingChina manufacturer Sale-Helpful Package Rna 4920 Rna 4822 Rna 4922 Ran 4824 Needle Roller Bearings with Machined Rings for Auto Parts   double row ball bearing
editor by CX 2024-03-24

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