Why do we choose needle bearings?

A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings’ rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter. Like all bearings, they are used to reduce the bearing friction of a rotating surface.

 

Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.

 

Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.

 

Needle bearings can come with or without a cage. If they have a cage then they can withstand a very high speed, while a needle bearing without a cage can support a very significant radial or axial load. Also note that these bearings are small in size, and as such have a small footprint. They are regularly used in gearboxes, for example.

 

In general, needle roller bearings are running fast with heavy loads. You can choose them according to your devices.

 

FAG Bearings.cc provides authentic branding bearings such as Sweden SKF Bearing, Germany FAG bearings and INA Bearing, Japan NSK Bearing, Japan NTN  Bearing, Japan IKO Bearing,Japan KOYO Bearing,Japan NACHI Bearing and America  TIMEKN Bearing ,etc. If you are bothering about how to select a suitable ball bearing, please feel free to contact and get a quote.

 

Related Posts:

How do we lubricant a bearing?

Why do we choose roller bearings?