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Black rubber 1-1/2 inch round backup pad with threaded 1/4-20 hole

3M

3M 45099 Quick Change Disc Backup Pad 1-1/2 in 30000 RPM

SKU CH-1M09-7Q81M MPN 45099

A 1-1/2 inch rubber backup pad with TR quick-change mount and 1/4-20 threaded hole runs at 30,000 RPM for disc sanding

  • TypeSanders
  • Quick-change TR system lets you swap discs in seconds
  • Medium-density rubber pad gives consistent finish on contours
  • 1/4 in.-20 threaded hole fits standard right-angle tools
  • Rated for 30000 RPM for high-speed sanding jobs
  • Compact 1-1/2 in. diameter reaches tight work areas

Quick-Change Backup Pad

The 3M 45099 is a round rubber backup pad built for quick-change disc sanders. A 1/4 in.-20 threaded hole secures it to the tool, and the TR quick-change system lets operators swap abrasives without extra hardware. Medium-density rubber supports the disc evenly during high-speed finishing work.

Best for right-angle finish sanding

Technicians who need rapid disc changes on a 1-1/2 in. pad will benefit from the TR interface and non-vacuum face. Shops that rely on vacuum-assisted dust extraction or require a larger diameter for broad surface prep should consider a different pad style.

30,000 RPM maximum operating speed

The pad is rated for 30,000 RPM, so the sander must not exceed this limit. Running the tool faster risks pad failure and unsafe disc ejection, making the speed rating the single specification that determines whether the 45099 matches the application.

Highlights

  • Quick-change TR system lets you swap discs in seconds
  • Medium-density rubber pad gives consistent finish on contours
  • 1/4 in.-20 threaded hole fits standard right-angle tools
  • Rated for 30000 RPM for high-speed sanding jobs
  • Compact 1-1/2 in. diameter reaches tight work areas

Specifications

TypeSanders
Brand3M
Model45099

Questions about this item

What does the TR Quick Change system limit in practice?

The TR Quick Change system allows fast disc swaps on this 1-1/2 in backup pad rated for 30,000 RPM maximum operating speed.

What does the 1/4 in.-20 threaded hole require to mount?

The 1/4 in.-20 threaded hole fits a matching mandrel or arbor on tools that accept a 1-1/2 in diameter round pad.

How is the pad installed and what step is often missed?

Thread the pad onto the tool's 1/4 in.-20 spindle until secure; the step often missed is confirming the tool's max RPM does not exceed 30,000 RPM.

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