Item: Radial Ball Bearing, Bearing Type: Double Shield, Bore Dia.: 45 mm, Bore Tolerance: +0/-0.012 mm, Outside Dia.: 100 mm, Outside Dia. Tolerance: +0/-0.015 mm, Width: 25 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 11,900 lb., Static Load Capacity: 7,200 lb., Max. RPM: 8,000, Temp. Range: -40 Degrees to 350 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Shield Material: Steel, Lubrication: EM Grease, Industry Number: 6309-ZZ C3