3M Scotch-BriteTM Precision Heavy Duty Aluminium Oxide Surface Conditioning Disc Hook & Loop Sanding Disc, 4 in, Coarse

This hook-and-loop sanding disc is a heavy-duty, industrial surface-conditioning product intended for preparatory and finishing work across automation, electronics, electrical and mechanical environments. It combines aluminium-oxide abrasive mineral with a conformable non-woven backing to remove, blend and refine surfaces while reducing the risk of gouging. Supplied as a 4in coarse grade set, the discs are designed for use on high-speed rotary tools up to the stated safe speed.

• Aluminium oxide abrasive delivers sustained material removal and cutting power
• Non-woven web backing reduces the risk of substrate damage during finishing
• Coarse 120 grit provides aggressive surface preparation for welds and edges
• Hook-and-loop attachment enables fast disc changes and secure retention
• Rated maximum safe speed 15,000 r/min for high-speed tooling compatibility

• Suitable for light grinding and deburring on mild steel components
• Ideal for edge-breaking and radiusing in mechanical assemblies
• Used for blending and refining weld seams in fabrication cells
• Can be used for surface cleaning prior to electronic assembly
• Suitable for finishing metal housings and electrical enclosures

The discs use a non-woven web backing that conforms to profiles while protecting the base material from gouging.

The hook-and-loop system simplifies Rapid changes, reducing tool downtime during batch processing and robotic cell swaps.

Aluminium oxide is used, providing a balance of cutting speed and disc life suitable for steel and mixed-metal work.

These discs are produced without vacuum holes, intended for applications where a solid backing is preferred.

The product is provided in packs of 100 to support sustained manufacturing throughput.