Engine crankshaft bearings are critical components that support and reduce friction between the crankshaft and engine block. Marine engine spares include these bearings to ensure smooth operation and longevity in harsh marine environments. They are designed to withstand high loads, corrosion, and extreme conditions.

Size: Varies by engine model (typically 50mm to 500mm inner diameter)

Grade: SAE 15W-40, SAE 30, or OEM-specific grades

Viscosity: ISO VG 68 to VG 150 (depends on application)

Buoyancy: Not applicable (solid metal components)

Material: Tri-metal (steel-backed with lead bronze or aluminum-tin overlay) or bi-metal (aluminum-silicon alloys)

Load Capacity: 50-300 MPa (depending on design)

Operating Temperature: -20°C to 150°C (varies by lubrication)

Surface Finish: 0.2-0.8 μm Ra (precision machined)

Clearance: 0.05-0.15mm (engine-specific tolerances)

Standards: Meets ISO 3547, DIN 1494, or OEM specifications

Yes, Engine Crankshaft Bearings and Marine Engine Spares typically comply with maritime standards such as ISO 15540, ASTM F2280, and classification society standards from ABS, DNV, or Lloyd's Register.