Which gear type is especially useful in reducing speed while increasing torque?

Worm gears are particularly effective in reducing speed while simultaneously increasing torque due to their unique design, which consists of a worm (a screw-like gear) that meshes with a worm gear (a gear with teeth that are cut at an angle). This arrangement allows for a substantial gear reduction in a compact space, making worm gears ideal for applications where high torque is required with low rotational speed.

When a worm gear set is used, the mechanical advantage gained allows for significant changes in speed and torque. For instance, when the worm is turned, it can drive the worm gear at a much slower speed while providing greater output rotational force (torque). This is a critical feature in various machinery applications, such as conveyor systems and elevators.

Moreover, worm gears are known for their ability to provide a self-locking mechanism, preventing the driven gear from moving without the worm turning. This characteristic is beneficial in applications requiring safety and stability, further showcasing the effectiveness of worm gears in reducing speed while amplifying torque.