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Stack of 50 brown 3-inch quick-change sanding discs

3M

3M 22393 361F Quick Change Disc 3in 36G TR PK50

SKU CH-ZYX6-0MVK9 MPN 22393

Aluminum oxide quick-change sanding disc, 36 grit, 3 inch diameter, TR attachment, 20,000 RPM max speed, pack of 50

  • TypeSanders
  • Extra-coarse 36 grit removes material fast
  • Quick-change TR system swaps discs in seconds
  • Aluminium-oxide grain resists heat buildup
  • Y-weight polyester backing withstands heavy pressure
  • Pack of 50 keeps production running

3M 361F Quick-Change Sanding Discs

These 3M 361F quick-change discs are aluminium-oxide coated abrasives on a polyester YF-weight backing. They suit metalworkers and fabricators who need aggressive stock removal on a right-angle die grinder or orbital sander. The closed-coat surface resists loading during heavy grinding. Packaged in boxes of 50 for shop throughput.

TR Quick-Change System and Speed Limit

The TR quick-change mounting locks the disc to a compatible backup pad in seconds, reducing change-over time between grits. Maximum operating speed is 20,000 RPM; running faster risks disc failure and operator injury. Always verify the tool’s rated speed before mounting and keep the spindle within the stated limit.

36-Grit Capacity for Heavy Removal

Grit 36 delivers extra-coarse cutting action for weld blending, scale removal and rapid dimensioning on steel or stainless. The 3-inch diameter covers small contours and tight corners where larger discs cannot reach. Closed coating loads slower than open coat, yet the coarse grit will still clog on soft aluminium or heavy paint — switch to a dedicated product for those materials.

Highlights

  • Extra-coarse 36 grit removes material fast
  • Quick-change TR system swaps discs in seconds
  • Aluminium-oxide grain resists heat buildup
  • Y-weight polyester backing withstands heavy pressure
  • Pack of 50 keeps production running

Specifications

TypeSanders
Brand3M
Model22393

Questions about this item

Should I choose the 36 grit option or a finer grade for heavy material removal?

The 36 grit extra coarse grade is designed for aggressive stock removal on metal surfaces.

How does the 20000 RPM maximum speed affect performance on my right-angle grinder?

The disc is rated for 20000 RPM, so it must only be used on tools that do not exceed this speed to prevent disc failure.

What does the TR quick-change system mean for disc swaps?

The TR quick-change system uses a roll-on/roll-off mechanism for fast, tool-free disc changes on compatible backup pads.

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