Torque Limiters

The torque limiter is a mechanical safety device that protects the transmission from overloads. When the torque exceeds the set value, the limiter slips or disengages and interrupts the transmission of motion, preventing the breakage of gears, chains, shafts, or the motor. With a proximity sensor, it is also possible to detect the intervention and stop the machine. ATTI offers CoMinTec torque limiters, available upon request for a quote.

The friction limiter transmits torque through friction discs pressed by springs: in case of overload, it slips and resumes transmission when the torque returns to normal. It is robust and suitable for high inertias, with torques ranging from a few Nm to over 23,000 Nm. The ball or roller limiter transmits torque through balls in a seat: upon overload, it disconnects accurately and without slipping, and is also suitable for humid or oil-contaminated environments. The pneumatic limiter regulates torque with compressed air instead of springs, allowing it to be changed during operation, from 7 to 30,000 Nm.