Item: Radial Ball Bearing, Bearing Type: Sealed, Bore Dia.: 40 mm, Bore Tolerance: +0/-.012 mm, Outside Dia.: 68 mm, Outside Dia. Tolerance: +0/-.013 mm, Width: 15 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 4,000 lb., Static Load Capacity: 2,610 lb., Max. Load Axial: 1,305 lb., Max. RPM: 6,300, Temp. Range: -40 Degrees to 212 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Seal Material: Synthetic Rubber, Lubrication: EM Grease Industry Number: 6008-2RS JEM C3