Angular Contact Ball Bearing Product series: 1)700 single row miniature series. 2)7800, 7900, 7000, 7200, 7300, 7400 single row series. 3)5200, 5300, 3200, 3300, LD57, LD58 double row series. 4)QJ200, QJ300 four point angular contact series. Retainer material: steel, brass, plastic. Contact angle: 15°, 30°, 45°. Can take large axial load. Non-standard design is available. Please consult with us .