Worm wheel gear

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

MATERIAL recommended for worms is definitely 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 can be found in stainless, light weight aluminum, bronze and nylon; worm gears are available in steel, hardened steel, stainless, aluminum, nylon and non-metallic (phenolic).

Security PROVISION: Worm gearing should not be used since a locking mechanism to carry weighty weights where reversing actions could cause harm or injury. In applications where potential damage is nonexistent and self-locking is desired against backward rotation then use of a single thread worm with a minimal helix angle automatically locks the worm gear drive against backward rotation.

RATIOS of worm gear sets are determined by 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 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 gear action generates considerable temperature, decreasing efficiency. The quantity of power transmitted at a given temperature improves as the effectiveness of the gearing increases. Proper lubrication enhances efficiency by reducing friction and warmth.

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Gearbox-worm

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