30/5-2RS Double Row Angular Contact Ball Bearing  detail Specifications: Metric series Material : 52100 Chrome Steel Construction : Double Row Seal Type : 2RS,Sealed on both sides Seal material : NRB Lubrication : Great Wall Motor Bearing Grease2#,3# Temperature Range : -20°to 120°C Limiting Speed : 30500 rpm Cage:Nylon cage or Steel cage Cage Material : Polyamide(PA66) or Steel Weight : 0.005 kg Main Dimensions: Bore diameter (d):5mm Outer diameter (D):14mm Width (B): 7mm Chamfer Dimension( r) min.:0.2mm Dynamic load ratings(Cr): 1.85KN Static load ratings(Cor): 0.95KN   ABUTMENT DIMENSIONS Minimum diameter shaft shoulder (da) min. : 6.4 mm Maximum diameter of housing shoulder (Da) max. : 12.6 mm Maximum fillet radius (ra) max. 0.2 mm