Backing pad 3M 09988, Ø76.2 mm Roloc™ interface, 6 mm shaft

3M 09988 backing pad is a Roloc™ interface accessory with a 76.2 mm (3 in) working diameter and a 6 mm shaft designed for holding Roloc quick-change abrasive discs. The pad provides a stable mounting surface for sanding, grinding and finishing operations where rapid disc changes and consistent surface contact are required. Compatible with power tools and pneumatic drivers that accept a Roloc interface and a 6 mm shaft, this backing pad helps maintain uniform pressure distribution across the abrasive for repeatable results.

Advantages

The backing pad features a secure Roloc™ quick-change connection that enables fast disc replacement without tools, reducing downtime during surface preparation tasks. Its 76.2 mm diameter offers a balance between coverage and control on flat and contoured surfaces. The 6 mm shaft provides straightforward attachment to compatible rotary tools and pneumatic drivers, ensuring a reliable mechanical connection and minimal runout for even sanding. The design focuses on stable holding of the abrasive disc to support consistent finish quality and operator control.

Suitable for

• Sanding and finishing of metal, paint and composites
• Deburring and edge blending in fabrication and repair
• Surface preparation before painting or coating
• Light grinding and scuffing tasks in automotive and industrial workshops

Key specifications

• Backing pad diameter: 76.2 mm
• Interface: Roloc™ quick-change
• Shaft diameter: 6 mm
• Suitable abrasive type: Roloc quick-change discs
• Typical applications: sanding, finishing, deburring, light grinding

How to use

Fit the backing pad onto a compatible tool by inserting the 6 mm shaft into the tool’s collet or holder, and secure according to the tool manufacturer’s instructions. Align a Roloc quick-change disc with the pad’s interface and press until the disc locks into place. Operate the tool at suitable speeds for the abrasive disc in use, applying consistent, moderate pressure and keeping the pad flat on the work surface to avoid gouging. Replace discs by twisting or pulling them off per the Roloc system guidance and snap new discs onto the pad for continued work.

Usage recommendations

Check tool compatibility for shaft size and interface type before use. Select the correct abrasive grit and type for the material and task to achieve desired surface finish and avoid excessive wear. Follow recommended tool speed and safety practices, including eye and hand protection.