Best choice of gearing when high drive reduction is required. Worm Wheels resemble spur gears with the help 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 number of threads, different ratios can be achieved without altering mounting arrangements. A distinctive Worm wheel gear feature of Worm and Wheel assemblies is certainly 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
