Marine electric motor brushes are conductive components that transfer electrical current between stationary and rotating parts in marine motors. They ensure reliable power delivery in harsh marine environments, resisting corrosion and wear. Proper maintenance of these brushes is crucial for efficient operation of marine electrical systems.

Size: Typically 10 mm to 50 mm in length, 5 mm to 20 mm in width, and 5 mm to 15 mm in thickness.

Grade: Carbon-graphite, electrographite, or metal-graphite blends, depending on application requirements.

Viscosity: Not applicable (solid component).

Buoyancy: Negligible; designed for submersion in marine environments.

Material: High-grade carbon, copper, or silver graphite composites for conductivity and durability.

Electrical Conductivity: 0.5 to 10 μΩ·m, depending on material composition.

Operating Temperature: -20°C to +150°C, with some high-performance variants up to +200°C.

Current Density: 5 to 15 A/cm², optimized for marine electrical systems.

Hardness: 20 to 100 Shore, balancing wear resistance and commutator compatibility.

Voltage Rating: Up to 600V, suitable for most marine motor applications.

Moisture Resistance: Treated with hydrophobic coatings to prevent saltwater corrosion.