IMPA: 614588

Mounted Wheels Shape A-21 (IMPA 614588) – Precision Abrasive Tools for Marine Use

Mounted Wheels Shape A-21 (IMPA 614588) are essential abrasive tools for shipboard metalworking and maintenance. Designed to exacting marine standards, these mounted wheels efficiently remove rust, smooth welds, and refine surfaces in confined spaces where larger tools are impractical. The A-21 shape allows precise control, making it ideal for deburring and polishing tasks on fittings, hulls, and engine components.

Each wheel is constructed from high-grade aluminium oxide abrasive, bonded with a robust matrix to resist chipping and heat buildup. The 6mm (1/4") shank fits standard rotary grinders and die grinders used across marine workshops and onboard repair kits. With a maximum operating speed of 36,000 RPM, these wheels deliver consistent cutting performance while maintaining longevity, even under demanding conditions.

Key Features

Technical Specifications

SpecificationValue
ShapeA-21
Shank Diameter6 mm (1/4")
Abrasive MaterialAluminium Oxide
Grit Size80 (standard)
Maximum Operating Speed36,000 RPM
Overall Length38 mm
Head Diameter10 mm
Bond TypeVitrified
ApplicationGrinding, deburring, surface finishing
IMPA Code614588

Frequently Asked Questions

What is a Shape A-21 mounted wheel used for?

A-21 mounted wheels are designed for precision grinding, deburring, and surface finishing on metal parts. They are especially useful in shipbuilding and repair for cleaning welds, removing rust, and shaping components in restricted areas.

What shank size does this mounted wheel have?

This wheel features a standard 6 mm (1/4") shank, which fits most rotary tools, die grinders, and flexible shafts used in marine workshops.

Can I use this wheel on stainless steel?

Yes, the aluminium oxide abrasive is suitable for both carbon steel and stainless steel. It is effective for weld blending and surface preparation without excessive heat generation.

What is the maximum RPM rating?

The maximum safe operating speed is 36,000 RPM. Always check that your tool does not exceed this speed to prevent wheel failure and ensure safety.

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