Needle Roller Bearings

Needle roller bearings can be separated by single row which can be submitted to high radial load and some axial load, The rolling element of a needle roller bearing is a needle, two ends of the external lines have the corrective slope which can eliminate the contact stress. In order to ensure the same load capacity and operating performance as ring bearing, the surface hardness of the raceway surface of shaft or shell hole should be similar to that of the raceway of bearing ring. This kind of bearing can only bear a radial load.