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Black sanding belt, 3 by 21 inches, 80X grit, heavy cloth backing

3M

3M 27497 3X21 80X Grit Sand Belt

SKU CH-QDX5-0FFHM

A 3" × 21" heavyweight aluminium-oxide sand belt with 80X grit for aggressive material removal

  • 3" X 21" belt fits compact sanders
  • 80X grit removes material fast
  • Aluminum oxide cuts wood and metal
  • Resin-over-resin bond resists heat buildup
  • Heavyweight X-weight cloth withstands heavy use

3X21 80X Grit Sand Belt

This 3M abrasive belt measures three inches by twenty-one inches and uses 80X grit aluminum oxide on heavyweight X-weight cloth. The resin-over-resin bond holds grain firmly for consistent cutting action. It suits metalworkers and woodworkers who need a medium-grade belt for shaping or finishing.

Fits portable belt sanders requiring 3X21 belts

The belt mounts directly on any sander that accepts the 3x21 inch size, needing no adapters or modifications. Its single-unit hang-tag packaging keeps the abrasive flat until installation. Users who need wider or longer belts must select a different part number from the 3M range.

Resin bond and X-weight cloth sustain cutting

The heavyweight backing resists stretching and edge wear during extended sanding sessions. Aluminum oxide grain maintains a steady cut rate without rapid dulling on ferrous and non-ferrous metals alike. Operators seeking aggressive stock removal may prefer a coarser grit such as 50X or 60X.

Highlights

  • 3" X 21" belt fits compact sanders
  • 80X grit removes material fast
  • Aluminum oxide cuts wood and metal
  • Resin-over-resin bond resists heat buildup
  • Heavyweight X-weight cloth withstands heavy use

Specifications

Brand3M

Questions about this item

How long does the 80X grit aluminum oxide belt last on a 3 x 21 inch sander under continuous sanding?

The 80X grit aluminum oxide on heavyweight X‑weight cloth is designed for extended material removal; actual belt life depends on workpiece hardness and feed pressure.

Does the 3 x 21 inch 80X belt run hot or load up during all‑day use?

Resin‑over‑resin bonding and open aluminum oxide grain resist loading and heat buildup, keeping cutting action consistent during prolonged sessions.

Which belt sander takes the 3 x 21 inch 27497 belt?

Any portable belt sander that accepts a 3 inch by 21 inch belt will fit this 80X grit aluminum oxide belt.

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