30/6 Double Row Angular Contact Ball Bearing  detail Specifications: Metric series Material:52100 Chrome Steel Construction:Double Row Seal Type :open type Limiting Speed:32000 rpm Cage:Nylon cage or Steel cage Cage Material:Polyamide(PA66) or Steel Weight:0.01 kg Main Dimensions: Bore diameter (d):6mm Outer diameter (D):17mm Width (B): 9mm Chamfer Dimension( r) min.:0.3mm Dynamic load ratings(Cr):3.1KN Static load ratings(Cor): 1.42KN   ABUTMENT DIMENSIONS Minimum diameter shaft shoulder (da) min. : 8 mm Maximum diameter of housing shoulder (Da) max. : 15mm Maximum fillet radius (ra) max. 0.3 mm