Aluminium Bronze ZCuAl10Fe3 Worm Gear Wheel 10 Module For Worm Gearbox

10 Module Aluminium Bronze ZCuAl10Fe3 Worm Gear Wheel For Worm Gearbox

Why need worm gear and worm shaft for transmission system

a) The first reason is the high reduction ratio.

A worm gear can have a massive reduction ratio with little effort - all one must do is add circumference to the wheel.

Thus you can use it to either greatly increase torque or greatly reduce speed.

It will typically take multiple reductions of a conventional gear set to achieve the same reduction level of a single worm gear - meaning users of worm gears have fewer moving parts and fewer places for failure.

b) A second reason to use a worm gear is the inability to reverse the direction of power.

Because of the friction between the worm and the wheel, it is virtually impossible for a wheel with force applied to it to start the worm moving.

On a standard gear, the input and output can be turned independently once enough force is applied.

This necessitates adding a backstop to a standard gearbox, further increasing the complication of the gear set.