Abrasive Non-Woven Disc 125 mm Medium 3M PN-DH Red, 22.23 mm hole, Pack of 25

3M Precision non-woven abrasive disc, 125 mm diameter, Medium (red) PN-DH type with a 22.23 mm centre hole, supplied as a pack of 25. Designed for surface conditioning, blending and finishing on metal and other substrates, this non-woven disc delivers consistent material removal with reduced chatter and a uniform finish. It is intended for use on angle grinders or backing pads that accept a 22.23 mm arbor and is suitable where controlled stock removal and surface preparation are required before painting, coating or welding.

Advantages

These non-woven discs offer uniform abrasive action across the surface, minimising gouging and preserving part geometry. The open-structured non-woven material reduces loading and heat build-up, extending disc life and maintaining cutting performance. The Medium grade provides an effective balance between material removal and surface refinement, producing a consistent finish while reducing operator fatigue due to smoother cutting characteristics.

Suitable for

• Surface conditioning and blending on steel and stainless steel
• Removing light rust, scale and old coatings
• Feathering weld seams and smoothing weld preparation areas
• Pre-paint surface preparation and final finishing
• Working on non-ferrous metals and composite substrates

Key specifications

• Disc diameter: 125 mm
• Grade: Medium
• Disc type: Non-woven (open-web) abrasive
• Colour: Red
• Centre hole diameter: 22.23 mm (for compatible arbors/backing pads)
• Pack quantity: 25 discs
• Recommended tool: Angle grinder or rotary backing pad compatible with 22.23 mm hole

How to use

Fit the disc to a backing pad or arbor that accepts a 22.23 mm centre hole and ensure the grinder is disconnected from power while mounting. Inspect the disc for damage before use. Operate the tool at the manufacturer’s recommended speed and apply light, even pressure; allow the abrasive to do the work rather than forcing the disc. Move the disc across the workpiece in steady passes, maintaining a consistent angle to achieve an even finish. Replace the disc if it shows excessive wear, tearing or loss of abrasive performance.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection, gloves and a dust mask or respirator when working with abrasive discs. Ensure the backing pad and tool speeds are compatible with the disc rating and follow workshop safety procedures. For best results on painted surfaces or delicate areas, test on a small area first to confirm the finish and aggressiveness of the Medium grade.