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Maroon 7-inch ceramic fiber disc, pack of 25

3M

3M 27405 Cubitron II 982C 7in 36G Disc PK25

SKU CH-CGDC-CD29Y MPN 27405

A 7-inch ceramic fiber disc rated at 36 grit for aggressive stock removal on metal, supplied in a pack of 25

  • TypeSanders
  • 36 grit extra coarse removes material fast
  • Ceramic mineral wears evenly for consistent finish
  • Runs cool to reduce heat damage
  • Quick-change TN connector fits 5/8 in.-11 spindles
  • 25 discs per pack for extended use

3M Cubitron II 982C 7 in 36 Grit Discs

These 3M Cubitron II 982C fiber discs use ceramic abrasive on a YY-weight fiber backing for extra-coarse material removal. The 7 in diameter and 5/8 in.-11 TN connector fit compatible right-angle grinders used in metal fabrication and weld preparation. A pack contains 25 discs rated for a maximum operating speed of 8,600 RPM.

Quick-Change TN Mount Installs in Seconds

The TN quick-change connector threads onto a 5/8 in.-11 spindle without tools, so disc swaps take only a few seconds. Ensure the grinder’s maximum RPM meets or exceeds 8,600 RPM and that the flange is clean; an overspeed or dirty mounting surface can cause vibration and premature tear-out of the fiber backing.

Ceramic Grain Runs Cool Under Continuous Grinding

The 982C series is engineered to wear evenly and run cool, optimizing mineral breakdown during sustained high-pressure grinding. Closed-coat coverage resists loading on ferrous metals, maintaining cut rate over long passes where conventional discs would glaze and overheat the workpiece.

Highlights

  • 36 grit extra coarse removes material fast
  • Ceramic mineral wears evenly for consistent finish
  • Runs cool to reduce heat damage
  • Quick-change TN connector fits 5/8 in.-11 spindles
  • 25 discs per pack for extended use

Specifications

TypeSanders
Brand3M
Model27405

Questions about this item

How do I know the disc is running at the correct speed after mounting it on my sander?

The disc is rated for a maximum of 8,600 RPM; run your sander at or below that speed and the disc should wear evenly and stay cool as designed.

What comes in the box and do I need any extra parts to use these discs?

The package contains 25 fiber discs with a 5/8 in.-11 TN quick-change connector; no additional hardware is required if your sander accepts that fitting.

Should I choose the 36-grit version or a finer grit for heavy stock removal?

The 36-grit grade is extra coarse and intended for aggressive material removal; select a higher grit number only when a smoother finish is needed.

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