Marine cable reeling drum is used for motor hydraulic grab on vessel.
During grab operation, the driving motor is always running with rated speed, while the turbo coupling is entirely absorbing the slip which is necessary for cable drums. Turbo coupling and electric motor are designed for 100 percent continuous running.
The driving shaft of the turbo coupling is constantly running at the motor’s rated speed. The driven shaft of the turbo coupling transmits the torque to the drum body via spur gear and this in the same rotation sense as the cable is winding up. When the cable is unwinding, the driven shaft of the turbo coupling is running in the rotation sense opposite to the driving motor and the driving shaft of the turbo coupling.
