Item: Radial Ball Bearing, Bearing Type: Shielded, Bore Dia.: 90 mm, Bore Tolerance: +0/-.015 mm, Outside Dia.: 160 mm, Outside Dia. Tolerance: +0/-11 micron, Width: 30 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 22,700 lb., Static Load Capacity: 16,500 lb., Max. RPM: 5,300, Temp. Range: -40 Degrees to 212 Degrees F.,. Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Shield Material: Stamped Steel, Lubrication: EM Poly Grease, Industry Number: 6218-ZZ C3