Most suitable choice of gearing when high drive reduction is required. Worm Wheels resemble spur gears by adding 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 number of threads, different ratios can be achieved without altering mounting plans. A distinctive feature of Worm and Wheel assemblies is definitely their ability to Worm wheel gear 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