EP also sells equipment tooth measuring devices called GEAR GAGES! Gear Gages decrease mistakes, save money and time when identifying and purchasing gears. These pitch templates are available in nine sets to recognize 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. Refer to the section on Equipment GAGES for catalog quantities when ordering.

Materials recommended for worms is hardened steel and bronze for worm gears. Nevertheless, 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, light weight aluminum, bronze and nylon; worm gears can be found in steel, hardened steel, stainless, aluminum, nylon and nonmetallic (phenolic).

SAFETY PROVISION: Worm gearing shouldn’t be used since a locking mechanism to hold heavy weights where reversing actions could cause harm or damage. In applications where potential damage is non-existent and self-locking is desired against backward rotation after that use of a single thread worm with a minimal helix angle automatically locks the worm equipment 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 solitary threads yield higher ratios than multiple threads. All EP inc. worm equipment sets can be found 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 improve performance in worm gearing. Worm gear action generates considerable heat, decreasing efficiency. The amount of power transmitted at a given temperature boosts as the effectiveness of the gearing increases. Proper lubrication enhances efficiency by reducing friction and heat.

We’ve summarised the key points regarding Worm wheel gear on our site.