Radial Ball Bearing, Single Row, Double Sealed, Bore Dia. 55mm, Outside Dia. 100mm, Width 21mm, Synthetic Rubber Molded to a Steel Plate Seal Material, Dynamic Load Capacity 9,750 lb., Static Load Capacity 6,550 lb., Temp. Range -20 Degrees to 250 Degrees F, Pressed Steel Cage Material, SRI#2 Grease, Industry Number 6211LLBC3