Drive protection for heavy duty machines

The modular design covers release torques from 200 to 9000Nm with the capacity to operate at speeds to 3000 r/min. On overload the DSM torque limiters give free release suiting installation between motor and gearbox on machinery such as extruders, mills, shredders and crushers.

DSM torque limiters are modular using 3 to 9 spring-loaded cartridges that press a steel ball into a hardened seat. Under normal conditions the connection is backlash-free.  On overload the balls ride out of the seat, pushing back the springs to a detent position where there is no longer any drive torque between input and output. The overload results in axial movement which can be sensed with a proximity switch to trigger an alarm. Subsequent re-engagement is a manual process. The release torque can be pre-set and adjusted using calibration markings on the cartridges.

In the UK sales and technical support for the DSM torque limiters is available from Techdrives. Units can be mounted with a chain or belt connection suiting offset drives, or supplied with a flexible coupling for in-line mounting. DSM torque limiters suit shafts up to 140mm diameter and are maintenance free.