Product details:

Radial Ball Bearing, Single Row, Double Sealed, Bore Dia. 55 mm, Outside Dia. 120 mm, Width 29 mm, Synthetic Rubber Molded to a Steel Plate Seal Material, ABEC Tolerance 1, Dynamic Load Capacity 16,100 lb, Static Load Capacity 10,100 lb, Max. RPM 3,500 RPM, Temp. Range -40 Degrees to 350 Degrees F, Steel Bearing Material, Pressed Steel Cage Material, Polyrex EM Grease, Industry Number 6311 2RS/C3