Double-row self-aligning ball bearing with double-sided seal: Weight and Dimensions: Inner (d) MM: 20, Outer (D) MM: 47, Width (B) MM: 18, Weight (kg: 0.14, Product Properties: Bore: C - Cylindrical Bore, Sea: 2RS - Rubber Seal on Two Side, Cage Type: P - Plastic Molded Ca: Radial Internal Play: Cn Normal Internal Play, Precision: Standard Precision, Lubrication: Standard Lubrication, Heat Stabilization: No Heat Stabilization - Temperatures up to 120 °C, Suffix description: 2RS. Rubber Seals At Each Side Of The Bearing, TV: Solid Cage Of Glass-Fire Reinforced Polyamide, Ball Riding.