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Torque Limiters

A torque limiter protects mechanical equipment, or its work, from damage by mechanical overload. A torque limiter may limit the torque by slipping a friction plate clutch or disconnect the load entirely. The action of a torque limiter is useful to limit any damage to the machine or product due to mechanical failures or product jams in the machine. Torque limiters are typically installed on the output side of gear reducers to protect the gear set. See more at Design World Motion Control Tips Protecting Against Mechanical Overload Damage.


Air Engaged Torque Limiters

Air Engaged Torque Limiters

Air engaged torque limiters are designed to instantly disengage when a machine overload occurs. The trip-torque is easily set, remotely, with an air regulator. The single-position, ball and detent interface assures re-engagement in the same position providing exact timing of two machine components. A proximity sensor detects the overload condition and sends a signal to the air control valve to blocking the air supply to the torque limiter for a quick disconnect. Full torque and half-torque units provide a torque range of 50-12,000 in-lbs.


Mechanical Torque Limiters

Mechanical Torque Limiters

Mechanical torque limiters are single or multi-position, ball/detent interface torque overload devices. They protect drive and driven components from damage associated with torque overloads. Backlash free torque transmission is accomplished with a series of balls nested in hardened detents in the units interface. Possible torque ranges from 40-24,000 in-lbs.


Friction Torque Limiters

Friction Torque Limiters

The Overload Protection System consists of a C-Faced mounted, air engaged, friction clutch and a control that electronically detects slip in the clutch when an overload occurs. The control compares the signals from two proximity sensors and determines if the clutch is slipping. Upon recognition of an overload, the system disengages the clutch allowing the drive to free wheel. The motor disconnects from the load allowing it to run cooler without current surges and blown fuses. The clutch is re-engaged at any speed.



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