FF Friction Torque Limiters

FF friction torque limiters, also known as friction torque limiters or torque overload clutches, are mechanical devices used to protect machinery and equipment from excessive torque and prevent damage. They are commonly employed in power transmission systems to safeguard components such as motors, gearboxes, and driven equipment.

The purpose of a friction torque limiter is to provide overload protection by limiting the amount of torque that can be transmitted through the system. When the torque exceeds a predetermined threshold, the torque limiter disengages the power transmission temporarily, preventing further torque transfer. This disengagement allows the system to absorb the excess torque without damaging the machinery or causing any catastrophic failures.

FF friction torque limiters consist of two main components: the driving and driven elements. The driving element is typically connected to the input shaft, while the driven element is connected to the output shaft. Between these two elements, there is a friction interface where torque is transmitted.

The friction interface consists of friction discs or plates that are pressed together under a specific force. This force is typically applied by a preloaded spring or a series of compression springs. When the torque applied to the driving element exceeds the preset value, the friction between the discs is overcome, and the driving and driven elements slip relative to each other.

The slipping action interrupts the torque transmission momentarily, protecting the system from excessive loads. Once the torque drops below the preset value or the overload condition is resolved, the friction discs re-engage, and torque transmission resumes.