6311-2RS ORS Sealed Radial Ball Bearing (0126)Item: Radial Ball Bearing, Bearing Type: Double Sealed, Bore Dia.: 55mm, Bore Tolerance: +0 0. 015mm, Outside Dia.: 120mm, Outside Dia. Tolerance: +0 0. 015mm, Width: 29mm, ABEC Tolerance: 1, Dynamic Load Capacity: 16,100 lb., Static Load Capacity: 10,100 lb., Max. RPM: 6,800, Temp. Range: 40 Degrees to 350 Degrees F., Bearing Material: 52100 Chrome Steel, Cage Material: Pressed Steel, Seal Material: Synthetic Rubber Molded to a Steel Plate,