Most suitable choice of gearing when high drive reduction is required. Worm 
Tires resemble spur gears by adding a throat cut into the O.D. of wheel. The throat permits the worm wheel to fully envelope the threads of the worm. Threads, not really teeth are cut on the worm, and by adjusting the number of threads, different ratios may be accomplished without altering mounting arrangements. A distinctive Worm wheel gear feature of Worm and Wheel assemblies is usually their capability to prohibit back driving
Pitch: 16 to 64 DP and 1.5 to .5 MOD
Materials: Brass for Worm Gear and STAINLESS for Worm
Single, Dual or Quad Start