A robust clutch solution for use on roll-on/roll-off (RORO) vessel gearboxes was needed by a major Chinese manufacturer of marine propulsion systems. The ship transports passengers travel on an upper deck and wheeled cargo/vehicles in a lower enclosed deck.

The large ferry utilizes dual diesel-powered propeller shaft propulsion. Each of the two propulsion shaft drivetrains features twin diesel engines connected to a common gearbox. Clutches are installed on both gearbox input shafts to allow engagement/disengagement of either engine, as needed.

The OEM investigated clutch designs from several manufacturers. Ultimately, KMS clutches from Stromag were selected based on reputation, responsiveness, quality, and cost-effectiveness. Stromag supplied Model KMS 18000/25 clutches which were integrated and adapted into the gearboxes. Each 635 mm diameter clutch has a torque rating of 240,000 Nm.

Wet-running, multi-disc KMS clutches are specifically designed for marine gearbox applications. The oil-cooled, hydraulically-operated units are used where high torques must be transmitted reliably in tight engine room spaces. The clutches have an excellent torque-to-weight ratio and low mass moment of inertia. Units feature a high thermal capacity since switching heat is dissipated by internal oil cooling. All KMS models are low maintenance, as any disc wear is automatically compensated by piston travel.

Highlights

• Wet-running, multi-disc clutches designed for marine gearbox applications
• Excellent torque-to-weight ratio
• Low mass moment of inertia
• Oil-cooled; high thermal capacity
• Low maintenance
• Long disc service life

Read about more clutch solutions from Altra Industrial Motion.

On March 27, 2023, Altra Industrial Motion was acquired by Regal Rexnord Corp. Learn more about this here.