China supplier Worm Gear And Worm Wheel near me supplier

The arrangement of gears seen above is called a worm and worm wheel. The worm, which in this example is brown in colour, only has 1 tooth but it is like a screw thread. The worm wheel, coloured yellow, is like a normal gear wheel or spur gear. The worm always drives the worm wheel round, it is never the opposite way round as the system tends to lock and jam.

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