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Lubrication is an important factor to improve the effectiveness of worm gear transmission. The worm gear motion generates a whole lot of heat, which lowers efficiency. The power shipped at a given temperature increases with the transmission efficiency. Appropriate lubrication lowers friction and heat, which will increase efficiency.
The recommended supplies for the worm are hardened steel and bronze for the worm gear. Even so, depending on the application, unhardened steel worms can operate sufficiently and more economically on cast iron worm gears rated at fifty%. In addition to steel and hardened steel, worms are obtainable in stainless steel, aluminum, bronze, and nylon worm gears are accessible in metal, hardened metal, stainless metal, aluminum, nylon, and non-metallic (phenolic).

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