1.angular contact ball bearing 2.structure: AC, C, B 3. 71900, 7000,7200, 7300, 71800 series Angular Contact Ball BearingAngular contact ball bearingsproduct specification:(1) precision: P2, P4, P5, P6, P0(2) process range: from id 35 mm to OD 1600 mm(3) clearance: normal(4) material: GCr15, GCr15SiMn(5) series: 71900, 7000,7200, 7300, 71800 series(6) structure: AC, C, B , with contact angle 25, ...