3312-2Z 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: 3300 rpm Cage: Nylon cage or Steel cage Cage Material: Polyamide(PA66) or Steel Weight: 2.80 kg   Main Dimensions: Bore diameter (d) : 60 mm Outer diameter (D) : 130 mm Width (B) : 54 mm Chamfer Dimension( r) min.: 2.1 mm Dynamic load ratings(Cr) : 125 KN Static load ratings(Cor): 98 KN   ABUTMENT DIMENSIONS Minimum diameter shaft shoulder (da) min. : 72 mm Maximum diameter of housing shoulder (Da) max. : 118 mm Maximum fillet radius (ra) max. : 2.1 mm