Most suitable choice of gearing when high drive reduction is required. Worm Tires resemble spur gears with the addition of a throat cut in to the O.D. of wheel. The throat permits the worm wheel to totally envelope the threads of the worm. Threads, not teeth are cut on the worm, and by adjusting the Worm wheel gear number of threads, different ratios can be achieved without altering mounting arrangements. A unique feature of Worm and Wheel assemblies can be their ability 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