Angular Contact Ball Bearing:1-Wide Applications:fit for high speed and high precision rotary, which can bear combined load, such as machine tool main shaft, high frequency motor, internal combustion turbine, oil pump, air compressor, printing machinery, etc. 2-R&D Capability:a complete set of advanced CNC machines, inspection instruments and devices, and professional technical team.3-Good Quality:ISO9001:2000& TS16949.4-Many Styles:Single row: 15 degree, 25 degree, 40 degree respectively configuring in post postition with code "C", "AC" and "B". Double row. Four row.4-Nice Price6-Good Service:professional person solve the problems for the customers asap on line.