Shaft Line Alignment: Material - High-strength steel; Size - Varies by vessel (typically 100mm to 800mm diameter); Grade - ASTM A564 or equivalent; Alignment tolerance - ≤0.05mm/m.
Propulsion Services: Propeller shaft material - Stainless steel or forged steel; Size - 150mm to 1,200mm diameter; Grade - ASTM A668 or equivalent; Lubrication viscosity - ISO VG 68 to 220.
Engine Services: Engine type - Diesel or gas turbines; Power range - 500 kW to 80 MW; Fuel viscosity - 2-700 cSt (depending on fuel type); Cooling system - Freshwater or seawater; Material - Cast iron, steel, or aluminum alloys.
Buoyancy: Shaft sealing - Lip seals or mechanical seals; Buoyancy compensators - Polyurethane or rubber; Pressure rating - Up to 10 bar.
Additional properties: Vibration tolerance - ≤2.5 mm/s RMS; Corrosion resistance - Coated or galvanized materials; Temperature range - -20°C to +120°C.