Grounding Brush Assembly - Double Unit, 3.5" Shaft, 4" Cap

For Pentagonal Shaped Caps Only!
The Tides Marine Brush Bar is a precision-engineered shaft-bonding solution that mounts directly to the Tides Marine Shaft Seal head. It maintains continuous electrical contact with the rotating propeller shaft, providing seamless integration with the vessel’s cathodic protection system. Equipped with high-performance brushes, the assembly helps prevent galvanic corrosion among underwater metals and substantially reduces electrical interference in onboard systems. By connecting the drive shaft electrically to the vessel’s bonding system, it improves the service life and reliability of essential propulsion components.

Available in single or double configurations to suit varying propeller shaft sizes, the system offers installation consistency across both variants.

Corrosion Prevention:
• Provides a reliable, low-resistance path for stray electrical currents.
• Equalizes electrical potential between the propeller shaft and underwater metals.
• Protects critical components by reducing galvanic corrosion effects.

Reduction of Electrical Interference:
• Maintains constant electrical continuity with the rotating shaft.
• Minimizes electrical noise that can affect sensitive onboard electronic systems.

Durable Construction:
• High-performance brushes engineered for extended service life.
• Designed to deliver a minimum of 2,500 running hours or 2 years under standard operating conditions.

Replace the Grounding Brush Module
Periodically inspect the Grounding Brush Module to verify that the grounding brush has not reached the end of its service life. Excessive wear can be identified visually by the presence of exposed copper wire positioned at the base of the slot within the module.

Grounding Brush Modules
The brush assembly is constructed from a fibre-reinforced composite material, with the housing engineered to provide a high level of strength, durability, and a compact design. The material is non-absorbent, ensuring it does not take on water and thereby maintains its structural integrity and performance in marine environments.