Needle Cage Bearing
Product Specification

A needle roller bearing is a bearing which uses small cylindrical rollers.The difference of a needle roller bearing and roller bearing is the ratio of diameter and length of their rollers, when the ratio of the diameter and the length of roller of a roller bearing is between the interval of 0.4 to 0.1, that roller bearing is called as needle roller bearing. They are used to reduce friction of a rotating surface.

Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less added clearance so they are much more compact. The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race

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.

Bearing No. d D T B C R Mass
9810 58.57 58.57 66.57 30 - - 0.108
162116 25.4 25.4 33.32 25.4 - - 0.042
202820.2 20 20 28 20.2 - - 0.026
NW 7025 25 25 35 30 - - 0.072
NW 264026 26 26 40 26 - - 0.095
NW 7050 28 28 48 23.8 - - 0.155
NW 230 30 30 42 30 - - 0.104
B 182420 18 18 24 20 - - 0.019
B-283313 28 28 33 13 - - 0.014
B-354013 35 35 40 13 - - 0.18
B-404517 40 40 45 17 - - 0.026
B-424727 42 42 47 27 - - 0.046
BB-50347 42 42 46 51.4 - - 0.07
BB-505530 50 50 55 30 - - 0.063
BB-566140.2 56 56 61 40.2 - - 0.101
BB-80006 62.1 62.1 68.1 42.3 - - 0.131
BB-80005 63.66 63.66 71.66 38.8 - - 0.15