During normal running torque is continuously transmitted from the hub to the flange through balls or rollers held in indentations in matching halves of a carrier flange by disc springs. As the torque exceeds a pre-set limit the balls or rollers are forced out of their indentations, allowing the flange sections to rotate separately. At this point the torque being transmitted is negligible and a limit switch is activated to signal emergency stop of the motor.
In Quick Guard versions re-engagement is automatic as soon as the torque has fallen below the pre-set value. Synchronous versions also re-engage automatically but after one full revolution has been completed. In the Continuous version, the rollers are prevented from fully disengaging and a switch is activated to signal motor stop. The Free Running version also disengages the drive at a pre-set torque value but must be manually re-set to re-engage the drive.
Standard Disc Spring Torque Limiters
- Type A – Basic Type, for connection shaft-drive component such as gear or pulley, supported on the shaft
- Type B – with Roller Bearing Flange, with drive centering flange mounted on a roller bearing. Ready For Mounting.
- Type C – with Extended Hubs, Bearing or bronze bushes can be mounted on it to support large drive components.
- Type D – with Elastic Coupling, for Connecting two coaxial shafts
Mini Disc Spring Torque Limiters
- Type E – Mini with Elastic Coupling, for connection shaft-drive component such as gear or pulley, supported on the shaft
- Type F – Mini with Extended Hub, For connection shaft-drive component such as gear or pulley, supported on the shaft
- Type G – Mini with Elastic Coupling, For Connecting two coaxial shafts