Gerwah offers backlash-free safety couplings. These safety couplings work as spring loaded positive couplings. To avoid damage safety coupling, the drive must be switched off immediate after an overload. Gerwah backlash-free safety couplings developed for especially dynamic drives operated constantly changing directions of rotation and under acceleration. The special roller or ball of the safety coupling guides guarantee a totally backlash-free transmission of the torque both directions of rotation. The couplings are therefore especiallyv suitedable for use in speed and direction controlled drives in conjunction with a closed control loop. Uniform loading the rollers and balls provides guarantee fors high system stiffness, which are important especially for modern servo drives. The roller ball guides simultaneously guarantee high reliability and switching frequencies when used with high dynamics drives. In the event of an overload the rollers or balls n out of the guides which. This results in an axial movement and which activates a proximity switch or limit switch. This proximity switch that immediately makes contact to switch off the drive. To avoid damage safety coupling, the drive must be switched off immediate after an overload. Gerwah backlash-free safety couplings developed for especially dynamic drives operated constantly changing directions of rotation and under acceleration.
