Ram Type Steering Gear
medium
2 / 2 models (Inspector)
Hydraulic ram (cylinder) type steering gear for large vessels
2 manufacturers · 2 models
Kawasaki
1
Marine Ram Steering Gear
Up to 80,000 kNm
· Hydraulic Oil
· Ram Hydraulic
Type
Ram Hydraulic
Common Failures & Inspection Points
- Ram gland packing leakage
- Pump relief valve weeping
- Autopilot interface fault
- Tiller key wear
Service: Standard on Japanese-built tonnage. Ram seal inspection at drydock. Hydraulic oil change every 2 years.
Spare Parts: Kawasaki: Dichtungssatz und Magnetventile an Bord vorhalten. Lead time: 3-8 Wochen.
Kongsberg
1
TENFJORD Ram Type
Up to 100,000 kNm
· Hydraulic Oil
· 4-Ram Hydraulic
Type
4-Ram Hydraulic
Common Failures & Inspection Points
- Ram cylinder seal leakage
- Tiller arm pin bushing wear
- Hydraulic lock valve failure
- Oil cooler fouling
Service: 4-ram design for largest vessels. Redundant hydraulic circuits per SOLAS. Check ram clearances at drydock. Emergency steering test monthly.
Spare Parts: Rolls-Royce (Kongsberg): Dichtungssatz und Magnetventile an Bord vorhalten. Lead time: 3-8 Wochen.