Bearing is an important part of modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce its friction coefficient in the process of motion, and ensure its rotation accuracy.

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

Rolling bearing is generally composed of outer ring, inner ring, rolling element and cage. According to the shape of rolling element, rolling bearing can be divided into ball bearing and roller bearing.

HCVAC coating machine is used for bearing parts. Bearing components often operate under extreme conditions: high loads, high sliding speeds and / or poor lubrication conditions can cause wear or excessive friction, which can shorten service life and / or efficiency. Today, carbon based PVD and DLC coatings are considered to be the most effective surface solutions for gears, roller bearings, pumps, compressors, linear guides, ball screw drives, collets, worm gears, and knitting and spinning machines.