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Black rubber backup pad with threaded 1/4-20 hole, 1-1/2 inch diameter, rated 30000 RPM

3M

3M 45100 Quick Change Disc Backup Pad 1-1/2 in 30000 RPM

SKU CH-5WGP-24RWQ MPN 45100

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

  • TypeSanders
  • Quick-change TR system speeds disc swaps on the job
  • Hard rubber density resists flexing under heavy sanding loads
  • 30000 RPM rating matches high-speed pneumatic tools
  • 1-1/2 in diameter suits detail work and tight corners
  • Threaded 1/4 in.-20 connector fits common mandrels

Quick-Change Backup Pad

The 3M 45100 is a round rubber backup pad designed for quick-change abrasive discs on die grinders and rotary tools. Its TR mounting system and threaded 1/4 in.-20 connector secure the disc without tools. Hard-density rubber keeps the disc flat under load for consistent material removal.

High-speed die-grinder operators

Technicians running right-angle or straight die grinders at up to 30,000 RPM will find the pad matches the tool speed rating. Shops needing dust extraction should choose a vacuum-style pad instead, as this model has no vacuum holes.

30,000 RPM speed rating

The maximum operating speed of 30,000 RPM is the critical figure: the grinder must not exceed it, or the pad can fail. Always verify the tool's free speed before mounting.

Highlights

  • Quick-change TR system speeds disc swaps on the job
  • Hard rubber density resists flexing under heavy sanding loads
  • 30000 RPM rating matches high-speed pneumatic tools
  • 1-1/2 in diameter suits detail work and tight corners
  • Threaded 1/4 in.-20 connector fits common mandrels

Specifications

TypeSanders
Brand3M
Model45100

Questions about this item

Does the 3M 45100 backup pad ship with quick-change discs or must they be purchased separately?

The pad is sold as a standalone backup pad; quick-change discs are not included and must be bought separately.

When should I choose the 1-1/2 inch diameter version versus a larger pad?

Select the 1-1/2 inch pad for detail work and tight contours; larger diameters cover more surface area per pass.

What does the 30,000 RPM maximum speed mean for daily sanding tasks?

It sets the upper safe limit for the tool; run your sander at or below this speed to avoid pad failure.

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