EP also sells equipment tooth measuring devices called Equipment GAGES! Gear Gages decrease mistakes, save time and money when identifying and ordering gears. These pitch templates can be found in nine sets to recognize all the regular pitch sizes: Diametral Pitch “DP”, Circular Pitch “CP”, Exterior Involute Splines, Metric Module “MOD”, Stub Tooth, Great Pitches, Coarse Pitches and Uncommon Pitches. Make reference to the section on GEAR GAGES for catalog amounts when ordering.

MATERIAL recommended for worms is usually hardened steel and bronze for worm gears. Nevertheless, depending on the application form unhardened metal worms operate adequately and more economically with cast iron worm gears at 50% horsepower ratings. Furthermore to metal and hardenedsteel, worms can be found in stainless, aluminum, bronze and nylon; worm gears are available in steel, hardened steel, stainless, aluminum, nylon and nonmetallic (phenolic).

SAFETY PROVISION: Worm gearing should not be used because a locking mechanism to carry weighty weights where reversing actions can cause harm or injury. In applications where potential damage is non-existent and self-locking is desired against backward rotation after that use of a single thread worm with a low helix angle immediately locks the worm equipment drive against backward rotation.

RATIOS of worm equipment sets are determined by dividing the number of teeth in the apparatus by the amount of threads. Thus single threads yield higher ratios than multiple threads. All EP inc. worm equipment sets are available with either left or right hands threads. EP inc. worm gear sets are offered with Single, Double, Triple and Qua-druple Threads.

LUBRICATION is an essential factor to boost effectiveness in worm gearing. Worm equipment action generates considerable temperature, decreasing efficiency. The quantity of power transmitted at a given temperature boosts as the performance of the gearing improves. Proper lubrication enhances efficiency by reducing friction and heat.

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