The effectiveness of a worm equipment transmission is dependent to a huge extent on the helix angle of the worm. Multi-threaded worms and gears with higher helix angles have established to be twenty five% to 50% far more productive than solitary-threaded worms. The sliding action of the worm meshing with or meshing with the worm gear results in considerable friction and loss of performance in comparison to other varieties of gears. Increase efficiency with hardened and ground worm change bronze worm gears.