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The advisable components for the worm are hardened steel and bronze for the worm gear. Even so, relying on the software, unhardened steel worms can run sufficiently and far more economically on forged iron worm gears rated at fifty%. In addition to metal and hardened metal, worms are available in stainless metal, aluminum, bronze, and nylon worm gears are offered in steel, hardened steel, stainless metal, aluminum, nylon, and non-metallic (phenolic).
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