The coordination between needle roller bearings and lubricating oil is a key factor in ensuring their stable operation. Needle roller bearings use slender cylindrical needle rollers as rolling elements and have high load-bearing capacity

Micro motion wear of needle roller bearings is a surface damage phenomenon caused by small reciprocating sliding between contact surfaces, which is closely related to the following factors

1、 Under cyclic loading, contact fatigue strength bearings are prone to fatigue damage on their contact surfaces, resulting in cracking and peeling, which is the main form of bearing damage. Therefore, in order to improve the service life of bearings, bearing steel must have high contact fatigue strength.