Friction Gear Motors Variators And Speed Reducer

Friction Gear Motors Variators And Speed Reducer

Friction gear motors variators and speed reducer
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Friction gear motors variators and speed reducer

Friction gear motors are a mechanical infinitely variable drive with a frictional force transmission for horizontal and vertical arrangement, available in nine sizes.

If the output speed decreases the torque increases – this is the basic principle of the friction gear unit. Unlike inverter operation the motor power remains constant and the torque increases if the output speed of the motor drops. The infinitely variable adjustment of the friction gear unit enables gear reduction ratio as well as gear gain ratios. Friction gear units find their main applications in the textile and food industries.


The power is transmitted through one or two consecutively arranged pairs of friction wheels. The pressing force needed for power transmission is generated by a cam curve depending on the applied load. The pressure required when starting is provided by a compression spring. Actuating the adjusting device causes the effective diameter of the driving and driven cone to change. This results in a change in output speed.

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