worm gear and worm wheel

The arrangement of gears seen above is called a worm and worm wheel. The worm, which in this example is brown in colour, just has one tooth worm gear and worm wheel nonetheless it is like a screw thread. The worm wheel, coloured yellow-colored, is like a standard equipment wheel or spur equipment. The worm at all times drives the worm wheel circular, it is never the contrary way round as the system tends to lock and jam


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