Knotted Brass Wire Cup Brushes for Marine Maintenance

These knotted brass wire cup brushes are essential for marine ship maintenance and surface preparation. The knotted wire design provides aggressive rust, scale, and paint removal, while the brass material is softer than steel, making it safe for use on stainless steel and aluminum without cross-contamination. Non-sparking properties make them suitable for working in hazardous shipboard environments.

Engineered for ship chandler applications, these cup brushes feature a durable steel hub and a standard 5/8-11 thread for quick fitting on angle grinders. Available in multiple sizes, they offer broad surface contact to cover large areas efficiently, ideal for cleaning hulls, decks, and ship pipework.

Key Features

Technical Specifications

PropertySpecification
MaterialBrass wire with steel hub
Brush TypeCup brush, knotted
Wire MaterialBrass (non-sparking)
Available Diameters3" (75 mm), 4" (100 mm), 6" (150 mm)
Thread Size5/8" - 11 UNC
Maximum SpeedUp to 20,000 RPM (size dependent)
Typical ApplicationsMarine surface prep, rust removal, cleaning

Frequently Asked Questions

Are brass cup brushes spark-free?

Yes, brass wire is non-sparking, making these brushes safe for use in flammable or explosive environments commonly found on ships.

What surfaces can I use these on?

Brass is softer than steel, so these brushes are ideal for stainless steel, aluminum, and other non-ferrous metals without causing gouging or surface damage.

What is the maximum operating speed?

Maximum RPM depends on brush diameter, ranging from 12,500 RPM for the 6" size up to 20,000 RPM for smaller brushes. Always check the brush label before use.

Do these brushes fit standard grinders?

Yes, they come with a standard 5/8-11 UNC threaded hub that fits most angle grinders on the market.

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