The suggested resources for the worm are hardened metal and bronze for the worm equipment. Nonetheless, based on the software, unhardened metal worms can run adequately and more economically on solid iron worm gears rated at fifty%. In addition to metal and hardened steel, worms are offered in stainless steel, aluminum, bronze, and nylon worm gears are available in metal, hardened steel, stainless metal, aluminum, nylon, and non-metallic (phenolic).

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