Item: Radial Ball Bearing, Bearing Type: Double Shield, Bore Dia.: 35mm, Bore Tolerance: +0/-0.012mm, Outside Dia.: 80mm, Outside Dia. Tolerance: +0/-0.013mm, Width: 21mm, ABEC Tolerance: 1, Dynamic Load Capacity: 7,500 lb., Static Load Capacity: 4,300 lb., Max. RPM: 10,000, Temp. Range: -40 Degrees to 350 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Shield Material: Steel, Lubrication: Polyrex EM Grease, Industry Number: 6307-ZZ C3.