... surface is,themuch more convenient high speed rotary is.Pretension is made on angular contact ball bearing to increase rididity and ... Double row angular contact ball bearingDouble row angular contact ball bearing can be subinitted radial and acial louding limit speed is quite high, it ... 7127020100150247006305513702110516026700735621470221101702870084NSK, NTN, IKO, KOYO, FYH, NACHI, HRB, LYC, ZWZ, etc. ...