EP also sells equipment tooth measuring devices called GEAR GAGES! Gear Gages reduce mistakes, save money and time when identifying and ordering gears. These pitch templates can be found in nine sets to identify all the standard pitch sizes: Diametral Pitch “DP”, Circular Pitch “CP”, Exterior Involute Splines, Metric Module “MOD”, Stub Tooth, Fine Pitches, Coarse Pitches and Uncommon Pitches. Refer to the section on Equipment GAGES for catalog figures when ordering.
MATERIAL recommended for worms is certainly hardened steel and bronze for worm gears. However, depending on the application form unhardened steel 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, aluminium, bronze and nylon; worm gears can be found in steel, hardened steel, stainless, light weight aluminum, nylon and nonmetallic (phenolic).
Basic safety PROVISION: Worm gearing shouldn’t be used as a locking mechanism to carry heavy weights where reversing action can cause harm or injury. In applications where potential harm is nonexistent and self-locking is desired against backward rotation then use of a single thread worm with a minimal helix angle instantly 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 remaining 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 improve efficiency in worm gearing. Worm gear action generates considerable warmth, decreasing efficiency. The amount of power transmitted at confirmed temperature increases as the performance of the gearing improves. Proper lubrication enhances performance by reducing friction and heat.
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