3M
3M Quick Change Disc 3in 60G TR PK50 361F
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
- 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.
Highlights
- 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
Specifications
| Brand | 3M |
|---|---|
| Type | Sanders & 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.
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