EP also sells gear tooth measuring devices called GEAR GAGES! Gear Gages reduce mistakes, save money and time 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”, External Involute Splines, Metric Module “MOD”, Stub Tooth, Fine Pitches, Coarse Pitches and Uncommon Pitches. Refer to the section on Equipment GAGES for catalog amounts when ordering.
MATERIAL recommended for worms is definitely hardened steel and bronze for worm gears. However, 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, aluminium, bronze and nylon; worm gears are available in steel, hardened steel, stainless, aluminium, nylon and non-metallic (phenolic).
Basic safety PROVISION: Worm gearing shouldn’t be used because a locking mechanism to carry heavy weights where reversing actions could cause harm or injury. In applications where potential harm is nonexistent 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 amount of teeth in the apparatus 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 can be found with Single, Dual, Triple and Qua-druple Threads.
LUBRICATION can be an essential factor to boost effectiveness in worm gearing. Worm equipment action generates considerable high temperature, decreasing efficiency. The quantity of power transmitted at a given temperature raises as the effectiveness of the gearing improves. Proper lubrication enhances performance by reducing friction and heat.
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