3309-2Z 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: 5500 rpm Cage: Nylon cage or Steel cage Cage Material: Polyamide(PA66) or Steel Weight: 1.36 kg   Main Dimensions: Bore diameter (d) : 45 mm Outer diameter (D) : 100 mm Width (B) : 39.7 mm Chamfer Dimension( r) min.: 1.5 mm Dynamic load ratings(Cr) : 68 KN Static load ratings(Cor): 51 KN     ABUTMENT DIMENSIONS Minimum diameter shaft shoulder (da) min. : 54 mm Maximum diameter of housing shoulder (Da) max. : 91 mm Maximum fillet radius (ra) max. : 1.5 mm