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.
MATERIAL recommended for worms can be 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. In addition to steel and hardenedsteel, worms can be found in stainless, light weight aluminum, bronze and nylon; worm gears can be found in steel, hardened steel, stainless, light weight aluminum, 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 desired 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 gear sets are dependant on dividing the amount of teeth in the apparatus by the amount of threads. Thus one threads yield higher ratios than multiple threads. All EP inc. worm equipment sets are available with either remaining or right hand threads. EP inc. worm gear sets can be found with Single, Double, Triple and Qua-druple Threads.
LUBRICATION can be an essential factor to improve efficiency in worm gearing. Worm gear action generates considerable heat, decreasing efficiency. The quantity of power transmitted at a given temperature boosts as the effectiveness of the gearing raises. Proper lubrication enhances efficiency by reducing friction and warmth.
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