Auto-Tensioner products

Our auto-tensioners are motorised devices. They are powered by hydraulic motors, the most powerful and compact drive system available.

Each unit is fitted with a 2metre length of TENETIS rope which is free running and stays within the unit.

The motor is used to turn the tensioning spool through which the rope passes. The unit has an anti-rotation device which will only permit rotation of the spool in one direction.

In operation, using the valve lever, the motor turns the spool which winds the rope around itself during which time the rope becomes self-clinching. This generates the required tension, at which point the motor stops turning. The tension is then held in check by the anti-rotation device.

At this point the tension cannot be released as it’s mechanically locked and requires no further power. In addition, when the operator is satisfied with the tensioning operation he simply applies the security lever which then locks the device out.

On completion of all tensioning operations and before the driver sets off, the hydraulic supply from the HPU is disabled.

In order to release the tension, the HPU is enabled and then using the valve lever the anti-rotation device is released and the security lever is lifted, which allows the spool to freely rotate and the rope to become free running.