Custom Worm Gears
Worm Gears are best angle drives providing huge speed ratios on comparatively short custom worm gear china center distances from 1/4” to 11”. When correctly mounted and lubricated they function as the quietist and smoothest operating type of gearing. Because of the high ratios feasible with worm gearing, optimum speed reduction can be accomplished in less space than many other types of gearing. Worm and worm gears are powered by non-intersecting shafts at 90° angles.
EFFICIENCY of worm gear drives depends to a sizable extent on the helix position of the worm. Multiple thread worms and gears with higher helix angle prove 
25% to 50% more efficient than single thread worms. The mesh or engagement of worms with worm gears generates a sliding action leading to considerable friction and better loss of efficiency beyond other types of gearing. The use of hardened and surface worm swith bronze worm gears boosts efficiency.
LUBRICATION can be an essential factor to improve effectiveness in worm gearing. Worm gear action generates considerable high temperature, decreasing efficiency. The quantity of power transmitted at a given temperature raises as the effectiveness of the gearing increases. Proper lubrication enhances performance by reducing friction and heat.
RATIOS of worm gear sets are determined by dividing the number of teeth in the apparatus by the number of threads. Thus one threads yield higher ratios than multiple threads. All Ever-power. worm gear pieces can be found with either still left or right hand threads. Ever-Power. worm gear sets can be found with One, Double, Triple and Qua-druple Threads.
Basic safety PROVISION: Worm gearing shouldn’t be used as a locking mechanism to hold large weights where reversing action can cause harm or damage. In applications where potential harm is nonexistent and self-locking is preferred against backward rotation then use of a single thread worm with a low helix angle instantly locks the worm gear get against backward rotation.