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Needle Roller Bearings are special types of roller bearings that use thin, long cylindrical rollers resembling needles. Regular roller bearings are only marginally larger than their diameters, however, the rollers of needle roller bearings are typically four times larger than their diameters. Just like other bearings, the function of these roller bearings is to reduce the friction of a rotating surface. Needle roller bearings have a larger surface area in contact with the races as compared to ordinary roller bearings and ball bearings. Due to this, they can support greater loads. Their thin structure requires less clearance between the surrounding structure and the axle. They are heavily utilized in automobile components such as compressors, pumps and transmissions.

Types of Needle Roller Bearings

1. Needle Rollers:

These are economical needle roller bearings with loose needle rollers that are assembled between the housing and the ground shaft. The axial location is usually provided by the hardened end washers. This type is used when the ground gear bores serve as an outer raceway. Needle rollers have several end configurations. Contours have been developed to reduce roller end stress that arises due to deflection or misalignment.

2. Drawn cup needle roller bearings:

These bearings are easy to handle and install. Their outer shell acts like an outer raceway and is derived from low-carbon steel. No additional machining is required, this makes the bearing economical. The cup has turned in lips that provide mechanical retention to the structure and act as shields to help retain lubricant and keep the foreign matter at bay. They are suited for application in housings of low hardness. Their low load capacity enables them to have higher speeds than their counterparts.

3. Needle Rollers and Cage Assemblies:

The needle roller assembly is particularly well-suited to applications with high speed and low to moderate applied load. The design of this assembly incorporates a cage and outer housing or inner liner as the outer raceway while essentially eliminating the requirement for an inner raceway on the shaft. The caged needle rollers provide control of operating radial internal clearances, high-speed capability, and tolerance to shaft misalignment or load deflection. The assembly has very good load distribution between rollers and raceways and provides excellent conformability to compound curves.

4. Heavy-duty needle bearings:

These bearings have a machined and thick ground outer ring. The cross-section of the outer ring allows mounting in a split housing. Because they have a cage to separate the rollers, the heavy-duty needle roller bearings can withstand misalignment and high speed.

5. Airframe needle bearings:

These bearings were designed to meet the needs and demands of the aircraft industry. The construction of these bearings includes heavy outer rings, which are then able to support high oscillating or static loads. The rings and rollers are made up of high carbon steel and have protective finishes on most of the external surfaces. While some might have lighter cross-sections for mounting, others are intended as track rollers. For heavier loads, the bearings are wider.

Best- Selling Needle Roller Bearings on Industrybuying

1. KHK Inner Dia 68 mm Needle Rollar Bearing RNA 6912

2. NRB Industrial NB202816 (Inside Dia 20 mm Outside Dia 28 mm) Needle Bearing

3. CTK 80005 Needle Bearing

4. NRB Industrial RNA4902 (Inside Dia 20 mm Outside Dia 28 mm) Needle Bearing

5. NTN HK1712 Needle Roller Bearing (Inside Dia - 17mm, Outside Dia - 23mm)


Needle roller bearings might be considered a type of cylindrical bearing, but they have different properties altogether. They are well suited for applications that involve oscillatory motion such as rocker arms and universal joints. With variable load, they can also be used for continuous rotation. 

Advantages of using Needle Roller Bearings:

➧ They are lightweight and compact and can be stored easily

➧ They have greater load-carrying capacity

➧ They have a small diameter so they can be used often to replace sleeve bearings

➧ Their small rollers are highly effective in reducing friction

➧ They are cost-effective

Top Brands Dealing in Needle Roller Bearings

Many well-known brands are available on Industrybuying that provide quality assured needle roller bearings such as NTN, KHK, NRB Industrial, Linear Bearing,Delux, ABC,SKF, ARB, SMT,NBC, Sky Rail,FAG, IKO and INA.

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An online platform that features a wide range of utility products for all industrial purposes, Industrybuying came into operation in 2013. At the moment the website maintains a fully catalogued collection of over 3.5 Lac SKUs. Faster payment options and pay-later options are available to make shopping more convenient for our customers.

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