Item: Radial Ball Bearing, Bearing Type: Sealed, Bore Dia.: 10mm, Bore Tolerance: +0-.007 mm, Outside Dia.: 30mm, Outside Dia. Tolerance: +0-11 micron, Width: 9mm, ABEC Tolerance: 1, Dynamic Load Capacity: 1, 220 lb., Static Load Capacity: 530 lb., Max. RPM: 34, 000, Temp. Range: -40 Degrees to 212 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Seal Material: Synthetic Rubber, Lubrication: EM Poly Grease, Industry Number: 6200-2RS C3.