Most suitable choice of gearing when high drive reduction is required. Worm Tires resemble spur gears by adding 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 tooth are cut on the worm, and by adjusting the number of threads, different ratios can be achieved without altering mounting arrangements. A distinctive feature of Worm and Wheel assemblies is certainly their ability to Worm wheel gear prohibit back driving
Pitch: 16 to 64 DP and 1.5 to .5 MOD
Material: Brass for Worm Gear and Stainless Steel for Worm
Single, Dual or Quad Start