Most suitable choice of gearing when high drive reduction is required. Worm Wheels resemble spur gears with the addition of a 
throat cut in to the O.D. of wheel. The throat permits the worm wheel to fully envelope the Worm wheel gear threads of the worm. Threads, not tooth are cut on the worm, and by adjusting the amount of threads, different ratios may be accomplished without altering mounting arrangements. A distinctive feature of Worm and Wheel assemblies is their ability to 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