Leeson Electric 821 Style B Washdown Gear Reducer has one-piece cast iron housings with single output cover design, CNC machined for precise component fit and alignment. Oversize high-speed bearings, positively retained for frequent reversing and start/stop cycles. Features o-rings on all bearing covers, eliminating gaskets, sealants and leaks. Leeson Electric 821 Style B Washdown Gear Reducers are directly interchangeable with other brands of cast iron worm reducers, including Baldor, Boston Browning, Dodge, Grove and Morse. Ultimate application flexibility with all-angle mounting provisions, the widest selection of accessory bases and flanges and the largest selection of stock reducer styles.