Pneumatic Tooth-type Torque Limiters

Pneumatic Tooth-type Torque Limiters are particularly suitable for those transmissions which require maximum power during start-up. This power requirement can be met by varying the pressure; maximum at the start and, once the required speed is obtained, it can be decreased, until reaching the needed operating torque. They are built with carefully selected materials and the components subject to slippage (toothing) are treated to withstand brief slippage without damage. The motion is transmitted only with supply pressure, which by advancing the piston engages the toothing. A set of helical springs which counter the supply pressure are used to completely release the entrainment toothing during a reduction or complete loss of pressure, and thus transmission components are made independent. Therefore, if necessary, these types of limiters may also be used as tooth-type couplings.