Oversize high-speed bearings, positively retained for frequent reversing and start/stop cycles. Non-flanged. O-rings on all bearing covers, eliminating gaskets, sealants and leaks. One-piece cast iron housings with single output cover design, CNC machined for precise component fit and alignment. - Hollow output shaft orientation. Directly interchangeable with other brands of cast iron worm reducers, including Baldor, Boston Browning, Dodge, Grove and Morse.