Shaft disconnecting devices

Propeller Shaft Disconnecting Devices

RENK PSC for connection or separation of engine and propeller; there are three ways of  en-/disengagement:  

  • First: manually en-/disengagement in engine room by manually operated hydraulically actuated connection of gearing .
  • Second: semi-automatic en-/disengagement in engine room by hydraulically actuated connection of gearing (Standard PSC).
  • Third: full automatic en-/disengagement in engine control room by hydraulic actuated connection of gearing



psc fix

PSC 225

Propeller Shaft Clutch

• Integrated axial bearing for propeller thrust transmission to the main engine thrust bearing • Reliable torque transmission via form locked and backlash free gearing
• Application of gearbox technology: Case hardened, ground and conically gearing
• Hydraulic actuation of the clutch (3 MPa)
• Minimizing of shaft sagging and displacement in disengaged position by core shaft in radial plain bearings
• Compact design by highly alloyed steel
• Extremely low wear by hardened and ground gearing. Thrust pads and core shaft bearings in bronze.
• Avoidance of teeth sticking by axial limitation
• Mechanical emergency blocking
• PSC forming integral part of propeller-shaft. No need of additional bearing support.
KAX fix

Renk KAZ

Customized Shaft
Disconnecting Devices

The KAZ is a shaft disconnecting device designed to connect or separate the main engine from the propeller. The torque will be transmitted slipfree via tapered pins. The shifting is performed mechanically by removing the spacer ring. When the clutch is engaged the propeller thrust is transmitted directly through the exterior elements. The axial and radial bearings are only in operation if the KAZ is disconnected.

Axilus LAK

Axilus LAK

Thrustbearing with shaft disconnecting device. The thrust bearing type AXILUS® LAK takes high axial forces and is primarily used in shipbuilding to absorb the propeller thrust. Moreover, it enables the power flow from engine to propeller to be interrupted. For this purpose the bearing has been fitted with a pneumatically clutchable gear coupling which can be engaged or disengaged at standstill. Disconnecting the shaft from the engine in this manner offers many advantages for the economical and safe running of a ship.