Ball Bearing, Deep Groove Ball Bearing, Angular Contact Ball Bearing manufacturer / supplier in China, offering Hxb Vacuum Pump Bearing CB211 Vcmp211 55*100*21mm for Turbomolecular Pump, Super Precision Bearing CB209-Z C209sy10 36.5*85*19mm Special Bearing for Vacuum Pump Bearing, Hxb Precision Bearing Vcmp114 CB114z 45*110*19mm for Turbo Molecular Pump and so on.