Gear transmission is a system for transmitting energy/power/torque (turning speed) consisting of two or more gear pairs. Axis from one gear transmits rotation to the axis of another, thus creating a relationship between the rotation of two axes.
Gear transmission is used for:
- Transferring torque
- Change of speed of the shaft
- Change of direction of rotation of the shaft
If the ratio is larger than one, rotation speed of the machine decreases, and the working momentum (power) increases. The mechanical device used to achieve this is called reduction drive; when the transmission ratio is lower than one, the device is called torque amplifier.
