Most suitable choice of gearing when high drive decrease is required. Worm Tires resemble spur gears with the addition of a throat cut into the O.D. of wheel. The throat permits the worm wheel to totally envelope the threads of the worm. Threads, not Worm wheel gear really tooth are cut on the worm, and by adjusting the number of threads, different ratios 
may be accomplished without altering mounting plans. A distinctive feature of Worm and Wheel assemblies is definitely their capability to 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, Double or Quad Start