Needle Roller Bearings

Needle roller bearings comprises of special form of cylindrical roller bearings in which the rollers are of a very small diameter and comparatively long and therefore they have the advantage of a very small difference between the bore and outside diameter. These bearings are detachable and suitable for carrying only radial loads. Various designs of needle roller bearings are available and depending upon the design of the bearing assembly. Needle rollers bearing may be used either without a inner race or outer race or even without any race merely using set of needle rollers. In all these case the shaft or the housing should be strictly of the same qualities as of the bearings races (hardness, accuracy and finish).