EP also sells equipment tooth measuring products called GEAR GAGES! Gear Gages reduce mistakes, save time and money when identifying and buying gears. These pitch templates can be found in nine sets to recognize all the regular pitch sizes: Diametral Pitch “DP”, Circular Pitch “CP”, External Involute Splines, Metric Module “MOD”, Stub Tooth, Good Pitches, Coarse Pitches and Uncommon Pitches. Refer to the section on GEAR GAGES for catalog amounts when ordering.
Materials recommended for worms is certainly hardened steel and bronze for worm gears. However, depending on the application unhardened metal worms operate adequately and more economically with cast iron worm gears at 50% horsepower ratings. In addition to steel and hardenedsteel, worms can be found in stainless, aluminum, bronze and nylon; worm gears are available in steel, hardened metal, stainless, aluminum, nylon and nonmetallic (phenolic).
Security PROVISION: Worm gearing shouldn’t be used since a locking mechanism to hold large weights where reversing action can cause harm or injury. In applications where potential damage is non-existent and self-locking is desired against backward rotation then use of an individual thread worm with a low helix angle immediately locks the worm gear drive against backward rotation.
RATIOS of worm gear sets are dependant on dividing the number of teeth in the apparatus by the 
number of threads. Thus one threads yield higher ratios than multiple threads. All EP inc. worm equipment sets can be found with either still left or right hand threads. EP inc. worm gear sets are offered with Single, Dual, Triple and Qua-druple Threads.
LUBRICATION is an essential factor to boost efficiency in worm gearing. Worm equipment action generates considerable temperature, decreasing efficiency. The amount of power transmitted at a given temperature boosts as the efficiency of the gearing increases. Proper lubrication enhances effectiveness by reducing friction and heat.
For any concerns regarding Worm wheel gear, call us on our site.