We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Pack of 50 brown 3-inch aluminum oxide quick-change discs with TR roll-on attachment, 60 grit coarse cloth backing, series 361F

3M

3M Quick Change Disc 3in 60G TR PK50 361F

SKU CH-9J8E-9NA2F

3-inch aluminum oxide quick-change discs with TR roll-on attachment, 60 grit coarse grade for aggressive stock removal on metal, rated to 20,000 RPM, pack of 50

  • Product typeSanders & Grinders Accessories
  • Coarse 60 grit aluminum oxide cuts material fast
  • TR roll-on/off system swaps discs in seconds
  • 3 inch cloth-backed discs fit standard quick-change holders
  • Rated for 20 000 RPM on pneumatic tools
  • Pack of 50 discs keeps the job moving

3-inch coarse aluminum-oxide discs for rotary tools

These 361F series discs use a TR roll-on/off attachment that locks onto compatible backing pads. Each disc measures 3 inches in diameter with a 60-grit aluminum-oxide coating on a cloth backing rated YY weight. The pack contains 50 discs intended for aggressive stock removal on metal surfaces.

TR roll-on/off system reduces change-over time

The Type 3 quick-change interface lets operators swap discs without tools, keeping the grinder running between grit steps. Aluminum-oxide grain maintains consistent cut rate on ferrous and non-ferrous metals, while the cloth backing resists tearing during edge work or contour sanding.

Mounts on any 3-inch TR backing pad rated for 20

Align the disc tabs with the pad slots, press and twist to lock; the connection holds under full-speed operation. Discs wear evenly when the tool runs at the rated maximum speed, but running slower can load the grain and reduce cut life.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $73.99
Pricier than about 76% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand name3M
Product typeSanders & Grinders Accessories

Questions about this item

How long will a 60-grit aluminium-oxide disc last before I need to replace it?

Disc life depends on the material being sanded and the pressure applied; expect to swap discs when the cutting action noticeably slows or the cloth backing shows through the grain.

What stops me running these at the full 20,000 RPM all day?

Heat buildup in the workpiece and the quick-change adapter is the first limit; let the disc cool periodically to avoid glazing the 60-grit surface.

How much noise and heat does a 3-inch disc generate during continuous use?

Noise level matches the sander's motor rating; the disc itself adds minimal heat beyond normal friction, so follow the tool manufacturer's duty-cycle guidance.

More in Bits, Hole Saws & Accessory Kits

Similar items