Guide to Needle Roller Bearing Sizes - isk bearings

Author: Hou

Jul. 14, 2025

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Guide to Needle Roller Bearing Sizes - isk bearings

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Table of content

  1. Needle Roller Bearing Size Chart
  2. Needle Roller Bearing Size Chart Catalogues PDF Download
  3. Using the Needle Roller Bearing Size Chart Effectively
Needle  Bearing Size Charts
  • TA Needle Roller Bearing Size Charts
  • HK/SCE Needle Roller Bearing Size Charts
  • HF Needle Bearing Roller Size Charts
  • NK Needle Roller Bearing Size Charts
  • NA/RNA Needle Roller Bearing Size Charts
  • AXK Needle Roller Bearing Size Charts
  • KT Needle Roller Bearing Size Charts
  • CF Needle Roller Bearing Size Charts

1. Needle Bearing Size Chart

Needle Roller bearings, also known as needle roller bearings, are precision-engineered components that are widely used in various industries for their ability to handle high radial loads in limited spaces. Proper selection of needle bearings is crucial for ensuring optimal performance and longevity of machinery and equipment. To assist in this process, a needle bearing size chart serves as a valuable reference tool.

In this article, we will delve into the details of a needle bearing size chart, explaining its significance and providing essential insights to help you make informed decisions when selecting needle bearings for your specific applications.

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2. Needle Bearing Size Chart Catalogues PDF Download

To obtain comprehensive information regarding the detailed dimensions of needle bearings, we recommend downloading our catalog PDF.  

The catalog provides in-depth specifications and technical details about various needle bearings, including bore diameter, outside diameter, width, and other critical dimensions.  

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TA Needle Roller Bearing Size Charts

Bearing No.

Bore(Fw)(mm)

Outer(D)(mm)

Width(C)(mm)

Weight(g)

TLA 59 5 9 9 1.8 TLA 69 6 10 9 - TLA 79 7 11 9 2 TLA 810 8 12 10 2.1 TA 810 8 15 10 - TA 815 8 15 15 - TA 912 9 16 12 1.8 TA 916 9 16 16 2.1 TLA 10 14 10 2.2 TLAM 10 14 10 2.2 TLA 10 14 12 2.6 TLAM 10 14 12 2.3 TLA RS 10 14 14 2.5 TLA 10 14 15 - TA 10 16 10 2.3

TA-Needle Bearings 

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HK/SCE Needle Roller Bearing Size Charts

Bearing No.

Bore(Fw)(mm)

Outer(D)(mm)

Width(C)(mm)

Weight(g)

HKTN 3 6.5 6 - SCE 55 + pg 3.175 12.7 8.334 0.004 SCE 21/24TN 3.97 7.15 6.35 - BKTN 4 8 8 1.8 HKTN 4 8 8 1.6 SCE 34TN 4.762 8.731 6.35 - HK 5 9 9 2 BK 5 9 9 2.1 HK 5 9 10 - HKTN 5 11 9 - HK 6 10 6 - HK 6 10 7 1.8 BK 6 10 8 2.2 HK 6 10 8 2.1 BK 6 10 9 2.6

HK/SCE-Needle Bearings 

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HF Needle Roller Bearing Size Charts

Bearing No. (Plastic spring)

Bearing No. (Stainless steel spring plate)

Fw(mm)

D(mm)

C(mm)

HFKF - 4 8 6 HFKFR - 4 8 6 HKKF - 6 10 8 HFKF HF 6 10 12 HFKFR HFR 6 10 12 HF HF 6 12 7 HF HF 6 12 10 HF HF 8 12 10 HFKFR HFR 8 12 12 HFKF HF 8 12 12 HF.3KF - 8 14 5.3 HF HF 8 14 10 HF HF 8 14 12 HF HF 8 16 7 HF HK 8 16 10

HF-Needle Bearings 

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NK Needle Roller Bearing Size Charts

Bearing No.

dr(mm)

D(mm)

C(mm)

Weight(g)

NK5/12TN 5 10 12 3.7 NK6/10TN 6 12 10 4.7 NK6/12TN 6 12 12 5.7 NK7/10 7 14 10 6.9 NK7/12 7 14 12 8.2 NK8/12 8 15 12 8.7 NK8/16 8 15 16 12 NKS8 8 16 13 11 NK9/12 9 16 12 10 NK9/16 9 16 16 13 NK10/12 10 17 12 10 NK10/16 10 17 16 13 NKS10 10 19 13 15 NK12/12 12 19 12 13 NK12/16 12 19 16 16

NK-Needle Bearings 

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NA/RNA Needle Roller Bearing Size Charts

Bearing No. (With inner)

Bearing No. (Without inner)

d(mm)

Fw(mm)

D(mm)

C(mm)

RNA494TN RNA494TN - 6 12 10 NA495 RNA495 5 7 13 10 NA496 RNA496 6 8 15 10 NA497 RNA497 7 9 17 10 NA498 RNA498 8 10 19 11 NA499 RNA499 9 12 20 11 NA RNA 10 14 22 13 NA RNA 12 16 24 13 RNA49/14 RNA49/14 - 18 26 13 NA RNA 15 20 28 13 NA RNA 17 22 30 13 NA RNA 20 25 37 17 NA49/22 RNA49/22 22 28 39 17 NA RNA 25 30 42 17 NA49/28 RNA49/28 28 32 45 17

NA/RNA-Needle Bearings 

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If you are looking for more details, kindly visit Needle Roller Bearings.

AXK Needle Roller Bearing Size Charts

Bearing No.

Bearing No. (Thrust bearings plate)

Bearing No. (Bearings plate)

Dc1(mm)

Dc(mm)

DW(mm)

AXK TN AS - 5 15 2 AXK TN AS LS 6 19 2 AXK TN AS LS 8 21 2 AXK AS LS 10 24 2 AXK AS LS 12 26 2 AXK AS LS 15 28 2 AXK AS LS 17 30 2 AXK AS LS 20 35 2 AXK AS LS 25 42 2 AXK AS LS 30 47 2 AXK AS LS 35 52 2 AXK AS LS 40 60 3 AXK AS LS 45 65 3 AXK AS LS 50 70 3 AXK AS LS 55 78 3

AXK-Needle Bearings 

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KT Needle Roller Bearing Size Charts

Bearing No.

Bore(d)(mm)

Outer(D)(mm)

Width(B)(mm)

Weight(g)

K3 x 5 x 9TN 3 5 9 0.4 K3 x 6 x 7TN 3 6 7 0.4 K4 x 7 x 7TN 4 7 7 0_5 K4 x 7 x 10TN 4 7 10 0.7 K5 x 8 x 8TN 5 8 8 0.7 K5 x 8 x 10TN 5 8 10 0.9 K6 x 9 x 8TN 6 9 8 0.8 K6 x 9 x 10TN 6 9 10 1 K6 x 10 x 13TN 6 10 13 1.3 K7 x 10 x 8TN 7 10 8 0.9 K7 x 10 x 10TN 7 10 10 1.1 K8 X 11 X 8TN 8 11 8 1.1 K8 x 11 x 10TN 8 11 10 1.7 K8 x 11 x 13TN 8 11 13 1.8 K8 x 12 x 10TN 8 12 10 1.3

KT-Needle Bearings 

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CF Needle Roller Bearing Size Charts

Bearing No.

Bore(d)(mm)

Outer(D)(mm)

Width(B)(mm)

Weight(g)

CF 4 4 12 8 7.4 CF 5 5 13 9 10.3 CF 6 6 16 11 18.5 CF 8 8 19 11 28.5 CF 10 10 22 12 45 CF 10-1 10 26 12 60 CF 12 12 30 14 95 CF 12-1 12 32 14 105 CF 16 16 35 18 169 CF 18 18 40 20 250 CF 20-1 20 47 24 386 CF 20 20 52 24 461 CF 24 24 62 29 815 CF 24-1 24 72 29 CF 30 30 80 35

CF-Needle Bearings 

Understanding the Needle Bearing Size Chart

A needle bearing size chart is a comprehensive reference guide that presents crucial information about different types and sizes of needle bearings. It typically includes key parameters such as bore diameter, outside diameter, width, and load-carrying capacity. The size chart may also provide additional details, such as limiting speeds, tolerance classes, and available variations in cage designs and materials.

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Importance of Using the Needle Bearing Size Chart

Utilizing a needle bearing size chart is essential for several reasons. Firstly, it enables accurate identification of the appropriate bearing size needed for a specific application. By referencing the chart, engineers and technicians can match the required dimensions and load capacities to the available needle bearing options. This ensures compatibility and optimal performance.

Secondly, the size chart facilitates accurate bearing selection by considering crucial operating conditions such as rotational speed,and load type. These factors greatly influence the suitability of needle bearings for specific applications. 

Needle Bearing Size Chart 

Begin by identifying the key parameters needed for your application, such as the required bore diameter, outside diameter, and width.  Cross-reference these dimensions with the available options in the size chart to find the suitable needle bearings size.  Take into account the load-carrying capacity and other relevant factors to ensure optimal performance and longevity.

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A Guide to Choosing the Right Bearing for Your Application With ...

In the world of engineering and machinery, where every component matters, bearings hold a special place. These seemingly small components play a crucial role in enabling smooth and controlled motion, reducing friction, and ensuring efficient energy transfer. However, not all bearings are created equal, and selecting the right one for your application is a critical decision that can impact performance, longevity, and overall efficiency. And when it comes to making that choice, ZNL Bearings is a name you can trust. In this blog, we’ll delve into the art of choosing the right bearing for your application, exploring key factors and considerations that can make all the difference.

Understanding the Basics: Types of Bearings

Before delving into the selection process, it’s essential to have a basic understanding of the different types of bearings available. Bearings can be broadly classified into several categories:

Ball Bearings: 

These are the most common type of bearings, utilizing balls to separate the moving parts and reduce friction. They’re suitable for applications with low to moderate loads and moderate speeds.

Roller Bearings: 

Roller bearings use spherical,cylindrical or tapered rollers to distribute loads over a larger area. They are often preferred for applications with higher loads and higher speeds.

Thrust Bearings: 

Designed to handle axial loads, thrust bearings are used when the load needs to be supported in one direction only.

Plain Bearings: 

Also known as bushings or sleeve bearings, these involve a sliding motion rather than rolling elements. They’re often used in applications with low speeds and light loads.

Key Factors for Selection:

  • Load Capacity: One of the most critical factors is determining the load capacity your application requires. Calculate both the radial and axial loads that the bearing will experience to ensure the selected bearing can handle them without premature failure.
  • Speed: Consider the rotational speed of the bearing. High-speed applications may require bearings designed to withstand the heat generated at higher RPMs.
  • Environment: Assess the operating environment. Is it exposed to dust, moisture, chemicals, or extreme temperatures? Choose bearings with seals or shields that can protect against these elements.
  • Precision and Tolerance: Depending on your application’s requirements for accuracy and smoothness, you may need bearings with higher precision and tighter tolerances.
  • Size and Fit: Ensure the bearing fits perfectly within your machinery. A proper fit prevents unnecessary stress and premature wear.
  • Lubrication: Proper lubrication is essential to reduce friction and wear. Consider whether your application needs lubrication-free or self-lubricating bearings.
  • Cost and Longevity: Balance the initial cost of the bearing with its expected lifespan. Sometimes, investing in a higher-quality bearing can lead to long-term savings through reduced maintenance and downtime.

Application-Specific Considerations:

  • Automotive Industry: Bearings used in vehicles need to handle a range of conditions, from smooth highways to bumpy terrains. They should be durable, resistant to shock loads, and require minimal maintenance.
  • Industrial Machinery: Heavy machinery often requires roller bearings that can handle significant loads and vibrations. Bearings used in conveyor systems, for example, need to be robust and able to handle continuous movement.
  • Aerospace and Defense: Bearings used in aerospace applications demand precision and reliability. They must withstand high G-forces, extreme temperatures, and operate flawlessly in critical situations.
  • Medical Equipment: Medical devices need precise and often miniature bearings. They should be quiet, smooth, and resistant to corrosion.
  • Energy and Power Generation: Bearings used in wind turbines or power plants should be capable of withstanding both high loads and consistent operation over time.

Conclusion: Making the Right Choice with ZNL Bearings

The process of selecting the right bearing for your application involves careful consideration of various factors. With ZNL Bearings as a trusted partner, you’re not just choosing any bearing; you’re choosing precision, reliability, and performance. From load capacity and speed to environmental conditions and the specific demands of your industry, ZNL Bearings offers a range of solutions designed to excel in diverse applications. A well-chosen bearing can extend the lifespan of your machinery, enhance performance, and reduce maintenance costs.

In the world of machinery and engineering, choosing the right bearing isn’t just a decision; it’s an investment in the reliability and efficiency of your application. So, take the time to evaluate your needs, consider all the factors, and partner with reputable bearing manufacturers to ensure your machinery operates at its best, driven by the precision and performance of the perfect bearing choice.

Are you interested in learning more about Deep Groove Ball Bearings m? Contact us today to secure an expert consultation!

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