Worm wheel gear

EP also sells gear tooth measuring products called Equipment GAGES! Gear Gages decrease mistakes, save time and money when identifying and buying gears. These pitch templates are available in nine sets to recognize all the standard pitch sizes: Diametral Pitch “DP”, Circular Pitch “CP”, External Involute Splines, Metric Module “MOD”, Stub Tooth, Fine Pitches, Coarse Pitches and Unusual Pitches. Make reference to the section on Equipment GAGES for catalog numbers when ordering.

MATERIAL recommended for worms can be hardened steel and bronze for worm gears. Nevertheless, depending on the application unhardened steel worms operate adequately and more economically with cast iron worm gears at 50% horsepower ratings. In addition to metal and hardenedsteel, worms are available in stainless, light weight aluminum, bronze and nylon; worm gears can be found in steel, hardened metal, stainless, aluminum, nylon and non-metallic (phenolic).

SAFETY PROVISION: Worm gearing shouldn’t be used because a locking mechanism to carry heavy weights where reversing action could cause harm or damage. In applications where potential damage is non-existent and self-locking is desired against backward rotation then use of a single thread worm with a low helix angle immediately locks the worm gear drive against backward rotation.

RATIOS of worm equipment sets are dependant on dividing the amount of teeth in the gear by the number of threads. Thus solitary threads yield higher ratios than multiple threads. All EP inc. worm equipment sets are available with either remaining or right hands threads. EP inc. worm gear sets can be found with Single, Dual, Triple and Qua-druple Threads.

LUBRICATION can be an essential factor to improve performance in worm gearing. Worm gear action generates considerable heat, decreasing efficiency. The amount of power transmitted at confirmed temperature raises as the performance of the gearing boosts. Proper lubrication enhances effectiveness by reducing friction and high temperature.

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