7304B Single Row Angular Contact Ball Bearing detail Specifications: Metric series Material : 52100 Chrome Steel Construction : Single Row Seal Type : open type Limiting Speed : 19300 rpm Cage : Nylon cage or Steel cage Cage Material : Polyamide(PA66) or Steel Contact Angle : 40° Weight : 0.145 kg MainDimensions: Bore diameter (d) : 20 mm Outer diameter (D) : 52 mm Width (B) : 15 mm Distance side face to pressure point (a) : 23 mm Chamfer Dimension ( r) min. : 1.1 mm Chamfer Dimension ( r1) min. : 0.6 mm Dynamic load ratings (Cr) : 19.38 KN Static load ratings (Cor) : 10.55 KN ABUTMENT DIMENSIONS Minimum diameter shaft shoulder (da) min. : 27 mm Maximum diameter of housing shoulder (Da) max. : 45 mm Maximum diameter of housing shoulder (Db) max. : 47.8 mm Maximum fillet radius of shaft (ra) max. : 1.0 mm Maximum fillet radius of housing (ra1) max. : 0.6 mm