3006-2RS 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: 7400 rpm Cage:Nylon cage or Steel cage Cage Material: Polyamide(PA66) or Steel Weight:0.17kg Main Dimensions: Bore diameter (d) : 30 mm Outer diameter (D) : 55 mm Width (B) : 19 mm Chamfer Dimension( r) min.: 1 mm Dynamic load ratings(Cr) : 20.3 KN Static load ratings(Cor): 15.6 KN   ABUTMENT DIMENSIONS Minimum diameter shaft shoulder (da) min. : 34.6 mm Maximum diameter of housing shoulder (Da) max. : 50.4 mm Maximum fillet radius (ra) max. : 1 mm