Worm gears (or wormwheel gears) and worms (or worm drives) are created to work Enveloping Worm Gear together to transfer motion between non-intersecting shaft at right angles. Worm gears and worms, which resemble spur gears and screws, respectively, combine to provide a high reduction ratio in a concise gear system. Our surface worm gears and surface worms are 
designed for exceptionally smooth and quite operation.