NSK is the best motor ball bearing, Schaeffler is the best automobile bearing, IINA (also Schaeffler) is the best needle bearing, Timken is the best conical bearing, NMB is the best miniature bearing, and SKF is the most complete and best overall.

Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

according to the different friction properties of moving elements, bearings can be divided into rolling bearings and sliding bearings. Among them, rolling bearing has been standardized and serialized, but compared with sliding bearing, its radial size, vibration and noise are larger and its price is higher.