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Black 3-inch round rubber backup pad with threaded 1/4-20 hole

3M

3M 45092 Quick Change Backup Pad 3 in 18000 RPM

SKU CH-6983-B9HZ0 MPN 45092

Quick-change backup pad for sanding discs, 3 in diameter, rated to 18000 RPM

  • TypeSanders
  • Quick-change TR system swaps discs in seconds
  • 18,000 RPM rating matches high-speed sanders
  • 3 in diameter suits detail and spot work
  • Medium-density rubber balances control and cut life
  • 1/4 in-20 threaded hole fits common mandrels

Quick-Change Backup Pad for Sanders

The 3M 45092 is a round rubber backup pad designed for quick-change abrasive discs on rotary sanders. Its TR mounting system accepts compatible discs without tools, and the 1/4 in.-20 threaded hole fits standard sander spindles. Medium-density rubber provides consistent support across the 3 in diameter face. This pad suits technicians who need fast disc changes during surface preparation work.

Sustained High-Speed Operation

Rated for a maximum operating speed of 18000 RPM, the pad maintains structural integrity during extended material-removal sessions. Medium density resists heat buildup and deformation when run continuously at full throttle. The non-vacuum solid face delivers uninterrupted backing for aggressive stock removal without airflow channels weakening the disc bond. Operators can rely on stable performance through long shifts on metal, composite or painted surfaces.

Rubber Construction and Mounting Practicalities

The black rubber body measures 12 5/8 in overall length and 9 1/4 in overall width, giving a large mounting footprint that reduces vibration transfer to the tool. Threaded 1/4 in.-20 engagement secures the pad firmly, minimising run-out at high speed. Quick-change TR interface lets users swap grits in seconds, keeping downtime low on multi-stage finishing jobs. Medium firmness balances conformability on contours with the rigidity needed for flat-panel work.

Highlights

  • Quick-change TR system swaps discs in seconds
  • 18,000 RPM rating matches high-speed sanders
  • 3 in diameter suits detail and spot work
  • Medium-density rubber balances control and cut life
  • 1/4 in-20 threaded hole fits common mandrels

Specifications

TypeSanders
Brand3M
Model45092

Questions about this item

How much heat or vibration does the 3 in backup pad generate when run continuously at 18 000 RPM?

The rubber medium-density pad absorbs vibration at the rated 18 000 RPM, and the non-vacuum design produces no additional airflow noise beyond the sander motor itself.

What sander spindle does the 1/4 in.-20 threaded hole on this 45092 pad require?

It fits any sander with a 1/4 in.-20 male spindle thread, the standard size for most 3 in quick-change tools.

Will the TR quick-change face on this 3 in disc pad accept older hook-and-loop abrasives?

No — the TR system locks only with matching TR quick-change discs; hook-and-loop or adhesive-backed abrasives will not attach.

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