Worm gears (or wormwheel gears) and worms (or worm drives) are made to work Enveloping Worm Gear together to transfer motion between nonintersecting 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 齿轮 system. Our ground worm gears and floor worms are engineered for exceptionally smooth and quite procedure.
Ground Worm shaft
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