Worm gears (or wormwheel gears) and worms (or worm drives) are designed to interact 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 decrease ratio in a Ground Worm shaft concise 齿轮 system. Our ground worm gears and ground worms are designed for remarkably smooth and quite procedure.
Ground Worm shaft
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