30/5-2Z Double Row Angular Contact Ball Bearing  detail Specifications: Metric series Material: 52100 Chrome Steel Construction: Double Row Seal Type : 2Z,Sealed on both sides Seal material : Metal 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