Best choice of gearing when high drive reduction is required. Worm Tires resemble spur gears with the help of a throat cut in to the O.D. of wheel. The throat permits the worm wheel to fully envelope the threads of the worm. Threads, not really the teeth 
are cut on the worm, and by adjusting the amount of threads, different ratios may be accomplished without Worm wheel gear altering mounting arrangements. A unique feature of Worm and Wheel assemblies is certainly their capability to prohibit back driving
Pitch: 16 to 64 DP and 1.5 to .5 MOD
Materials: Brass for Worm Gear and Stainless Steel for Worm
Single, Double or Quad Start