Item: Radial Ball Bearing Bearing, Type: Ball, Bore Dia.: 12 mm, Bore Tolerance: +0/-.008 mm, Outside Dia.: 28 mm, Outside Dia. Tolerance: +0/-.009 mm, Width: 8 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 1,210 lb., Static Load Capacity: 530 lb., Max. Load Axial: 265 lb., Max. RPM: 17,000, Temp. Range: -40 Degrees to 212 Degrees F ,  Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Seal Material: Synthetic Rubber, Lubrication: GJN EM Grease, Industry Number: 6001-2RS JEM C3.