Key specifications and technical properties of Marine Environmentally Acceptable Lubricants (EALs) and Lubrication Systems:
Size: Varies based on application (e.g., small gearboxes to large stern tubes).
Grade: ISO VG 68, 100, 150, 220, 320, 460, 680 (common for marine applications).
Viscosity: Typically ranges from 68 to 680 cSt at 40°C, depending on equipment requirements.
Buoyancy: Generally neutral to slightly buoyant, depending on base oil (e.g., synthetic esters, vegetable oils).
Material: Biodegradable base oils (e.g., polyalkylene glycols, synthetic esters, vegetable oils) with additive packages for oxidation stability, anti-wear, and corrosion resistance.
Biodegradability: ≥60% (OECD 301 standards) for environmentally acceptable classification.
Toxicity: Low aquatic toxicity (passing EPA VGP or similar regulations).
Flash Point: Typically >200°C for fire safety.
Pour Point: Ranges from -15°C to -40°C for cold-weather performance.
Water Content: <0.1% to prevent emulsion formation.
Lubrication Systems: Centralized or standalone systems with filtration, cooling, and monitoring for stern tubes, thrusters, and hydraulic systems.
