The efficiency of a worm equipment transmission is dependent to a huge extent on the helix angle of the worm. Multi-threaded worms and gears with greater helix angles have proven to be 25% to fifty% a lot more successful than solitary-threaded worms. The sliding motion of the worm meshing with or meshing with the worm equipment results in significant friction and reduction of effectiveness in comparison to other types of gears. Increase efficiency with hardened and ground worm change bronze worm gears.