The worm gear is a special type of arrangement that has a gear in form of a screw, which makes it a worm gear. It meshes with a worm gear, looks like spur gear, and the arrangement can reduce rotational speed and transmit torque, just like other gears.
6mm Worm Gear, which is made out of durable plastic, can tolerate the heavy load. These gears basically consist of a shaft with spiral thread which is activated with the toothed wheel. It converts the rotational movement into linear movement. It is basically used to maintain the torque-speed ratio and to convert one motion into another motion and worm gears are one of them.