6317-ZZ SKF Shielded Radial Ball Bearing (0526)Item: Radial Ball Bearing, Bearing Type: Shielded, Bore Dia.: 85 mm, Bore Tolerance: +0 . 007 mm, Outside Dia.: 180 mm, Outside Dia. Tolerance: +0 11 micron, Width: 41 mm, ABEC Tolerance: 1, Dynamic Load Capacity: 31,500 lb., Static Load Capacity: 21,700 lb., Max. RPM: 5,000, 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,