3M
3M Roloc 777F Ceramic/Aluminum Oxide Disc 3 in 80 Grit 20000 RPM
Ceramic and aluminum oxide abrasive disc for fast stock removal and finishing on sanders and grinders, rated to 20000 RPM
- TypeSanders & Grinders Accessories
- Ceramic/aluminium oxide blend cuts faster and lasts longer
- Closed-coat construction delivers consistent finish on heat-sensitive alloys
- YF-weight polyester backing handles medium pressure wet or dry
- Roloc TR attachment enables quick disc changes on the job
- Rated 20000 RPM for high-speed sanders and grinders
3M Roloc 777F Ceramic Disc for Sanders and Grinders
This 3M Roloc 777F disc is a power-tool accessory designed for stock removal and finishing on metal surfaces. It fits angle grinders and orbital sanders that accept the Roloc TR attachment system. The product is new and sold as an individual abrasive disc.
Maximum operating speed 20000 RPM
The single specification that decides fitment is the maximum speed rating of 20000 RPM. Your tool must not exceed this speed or the disc can fail. The 80 grit rating defines the cutting aggressiveness for medium material removal. Verify the tool spindle speed before mounting.
Ceramic blend cuts cooler on heat-sensitive alloys
The ceramic and aluminum oxide blend self-sharpens during use to maintain a consistent cut rate. A grinding aid reduces temperatures when working with stainless steel and other heat-sensitive alloys. The YF-weight polyester cloth backing resists tearing in both wet and dry applications. The Roloc TR system allows quick disc changes without tools.
Highlights
- Ceramic/aluminium oxide blend cuts faster and lasts longer
- Closed-coat construction delivers consistent finish on heat-sensitive alloys
- YF-weight polyester backing handles medium pressure wet or dry
- Roloc TR attachment enables quick disc changes on the job
- Rated 20000 RPM for high-speed sanders and grinders
Specifications
| Brand | 3m Abrasive |
|---|---|
| Type | Sanders & Grinders Accessories |
Questions about this item
How does the 20000 RPM rating translate when the disc is mounted on a tool?
The 20000 RPM limit means the disc must only be used on equipment whose free speed does not exceed that figure; running it faster risks disc failure and injury.
What does the TR attachment type mean for compatibility?
TR identifies the Roloc™ twist-lock system; the disc locks onto a matching TR holder with a quarter-turn, so it fits any Roloc TR back-up pad or holder of the same diameter.
What backing-pad size and thread are required to mount this 3-inch disc?
A 3-inch Roloc TR back-up pad with the standard Roloc thread is needed; the disc snaps onto that pad and is secured by the tool's spindle.
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