Item: Radial Ball Bearing Bearing Type: Sealed Bore Dia.: 20mm Bore Tolerance: +0/-.008 mm Outside Dia.: 47mm Outside Dia. Tolerance: +0/-11 micron Width: 14mm ABEC Tolerance: 1 Dynamic Load Capacity: 3,000 lb. Static Load Capacity: 1,500 lb. Max. RPM: 20000 Operational Temp. Range: -40 Degrees to 212 Degrees F Bearing Race and Balls Material: 52100 Chrome Steel Cage Material: Pressed Steel Seal Material: Synthetic Rubber Lubrication: MT47 Grease Industry Standard Number: 6204 2RS C3.