Size: Typically ranges from 200 mm to 1200 mm in diameter, depending on vessel requirements.
Grade: Marine-grade components, often compliant with ISO 8846 or equivalent standards.
Viscosity: Hydraulic oil viscosity typically ISO VG 32 to VG 68, depending on system design.
Buoyancy: Not applicable; bow thrusters are installed below the waterline.
Material: Propeller blades made of bronze or stainless steel; housing and gears from high-strength steel or aluminum alloys.
Power Range: 10 kW to 500 kW, depending on thruster size and application.
Sealing: Lip seals or mechanical seals with corrosion-resistant materials like Nitrile or Viton.
Lubrication: Grease or oil-lubricated bearings, often with EP (Extreme Pressure) additives.
Operating Temperature: -20°C to +80°C, depending on lubricant and material specifications.
Pressure Rating: Hydraulic systems typically operate at 150-300 bar.
