Heavy Vehicle Standard Worm Gear, For Industrial

A worm gear is a type of staggered shaft gear that transmits motion between two shafts that are neither intersecting nor parallel. Even though it is compact it can provide a large speed reduction.A worm gear is a thread cut into a round bar, and a worm wheel is a gear that meshes with the worm at a shaft angle of 90 degrees. The set of a worm and worm wheel is called a worm gear.Its history is so old that its existence is described by Archimedes in around 250 BC.There are roughly two types of worm gears.One is a cylindrical worm that meshes with a worm wheel as a pair to form the "cylindrical worm gear".The other is the "drum-shaped worm gear" which is a pair consisting of a drum-shaped worm and a worm wheel.The latter type is also called "throated worm gear".