The effectiveness of a worm gear transmission is dependent to a big extent on the helix angle of the worm. Multi-threaded worms and gears with higher helix angles have confirmed to be 25% to fifty% a lot more efficient than single-threaded worms. The sliding motion of the worm meshing with or meshing with the worm equipment final results in significant friction and reduction of efficiency compared to other kinds of gears. Boost efficiency with hardened and ground worm swap bronze worm gears.