EP also sells gear tooth measuring gadgets called GEAR GAGES! Gear Gages reduce mistakes, save time and money when identifying and ordering gears. These pitch templates are available in nine sets to identify all the standard pitch sizes: Diametral Pitch “DP”, Circular Pitch “CP”, Exterior Involute Splines, Metric Module “MOD”, Stub Tooth, Good Pitches, Coarse Pitches and Uncommon Pitches. Make reference to the section on Equipment GAGES for catalog quantities when ordering.
Materials recommended for worms is hardened steel and bronze for worm gears. However, depending on the application unhardened steel worms operate adequately and more economically with cast iron worm gears at 50% horsepower ratings. Furthermore to metal and hardenedsteel, worms are available in stainless, aluminum, bronze and nylon; worm gears are available in steel, hardened metal, stainless, aluminium, nylon and nonmetallic (phenolic).
SAFETY PROVISION: Worm gearing should not be used as a locking mechanism to carry weighty weights where reversing actions can cause harm or damage. In applications where potential damage is non-existent and self-locking is preferred against backward rotation then use of an individual thread worm with a minimal helix angle immediately locks the worm equipment drive against backward rotation.
RATIOS of worm equipment sets are dependant on dividing the number of teeth in the gear by the number of threads. Thus solitary threads yield higher ratios than multiple threads. All EP inc. worm gear 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 improve effectiveness in worm gearing. Worm equipment action generates considerable warmth, decreasing efficiency. The quantity of power transmitted at a given temperature improves as the performance of the gearing boosts. Proper lubrication enhances effectiveness by reducing friction and high temperature.
Articles concerning Worm wheel gear are readily available on our internet site.