1.High Speed 2.Longer Lasting 3.More Reliable,Better Performing 4.Resistant to heat 5.Plenty of stock Size Range:From 3mm to 200mm,standard & non-standardType:More than 350 types, including metric and inch deep groove ball bearing, self-aligning bearing, angular contact bearing, plain bearing, and spherical bearing. Open type, seal rings, shields can be provided.Retainer: NYLON, PTFE, PEEK, steel ...