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Home » Overload Safety Devices with Torque Limiters
Overload Safety Devices with Torque Limiters
Zero-Max’s Torq-Tender overload safety devices incorporate torque limiters for dependable overload protection. When a jam-up or excessive loading occurs, the built-in torque limiter will reliably and quickly release to prevent system damage. • The Torq-Tender torque limiter is tamper-proof. Once installed, the torque value cannot be changed. This feature ensures the integrity of the machined design, and renders costly and potentially risky calibration procedures unnecessary. Torque value is controlled by the part number that is ordered; that value determines what spring is used during assembly of the torque limiter.
The torque value of a Zero-Max Torq-Tender is determined by the force of the springs that are installed in the unit. The spring force acts upon slides that are part of the inner shaft; these slides transmit force that holds the drive key in its engagement slot in the outer housing.
When the torque load exceeds the rating of its precision tempered torque springs, the Torq-Tender’s drive key pivots out of the engagement slot to disengage the device. When disengaged, the torque limiter does not provide significant resistance to rotation.
Upon the completion of one shaft rotation, the torque limiter will automatically attempt to reengage. Once the overload is removed and speed is reduced, the drive key will snap back into the engagement slot and the Torq-Tender will be reset for the next incidence of overload.