Worm gears (or wormwheel gears) and worms (or worm drives) are designed to Ground Worm shaft interact to transfer movement between non-intersecting shaft at right angles. Worm gears and worms, which resemble spur gears and screws, respectively, combine to supply a high reduction ratio in a compact gear system. Our surface worm gears and floor worms are engineered for remarkably smooth and quite operation.