Most suitable choice of gearing when high drive decrease is required. Worm Wheels resemble spur gears by adding a throat cut into the O.D. of wheel. The throat permits the worm wheel to fully envelope the threads of the worm. Threads, not really teeth are cut on the worm, and by adjusting the number of threads, different ratios can be achieved without altering mounting plans. A unique feature of Worm and Wheel assemblies can be their capability to prohibit back driving
Pitch: 16 to 64 DP and 1.5 to .5 MOD
Worm wheel gear Material: Brass for Worm Gear and 
Stainless Steel for Worm
Single, Dual or Quad Start