3M HD-DH Aluminium Oxide Surface Conditioning Disc Abrasive Disc, 4 in, Extra Coarse Grade, 100 Grit 100 Per Pack

This hook-and-loop sanding disc is a heavy-duty surface conditioning pad designed for abrasive removal, blending and edge treatment in industrial environments. It combines an aluminium oxide abrasive with a conformable non-woven web backing to work on components where controlled material removal and surface finishing are required. The product is intended for use with handheld and machine grinders at high rotational speeds common in automation and mechanical workshops.

• Extra coarse 80 grit provides aggressive material removal and Faster stock removal
• Non-woven backing reduces the risk of gouging while maintaining conformability
• Hook-and-loop attachment enables quick pad changes and secure retention
• Rated maximum safe speed 15,000 rpm suits high-speed grinders and pneumatic tools

• Suitable for light grinding and deburring of mild steel components
• Ideal for edge breaking and radiusing on fabricated parts
• Used for blending and refining welds in production lines
• Can be used for surface cleaning prior to assembly or coating
• Suitable for integration with automated sanding stations on fixtures

The discs use aluminium oxide, which delivers robust cutting on ferrous metals and consistent wear for general-purpose heavy-duty tasks.

They are designed for hook-and-loop retention to match common back-up pads and enable Rapid replacement during production.

The conformable web evens pressure across irregular profiles, reducing the risk of gouges while still permitting an aggressive finish appropriate to the grade.

Yes, the heavy-duty construction and pack quantity of 100 per pack support frequent use and minimise changeover in high-throughput environments.