3M 7000120351 Quick-change Disc 1-1/2 in 50 Grit Ceramic

Product Description

The 3M 7000120351 is a coated abrasive quick-change disc designed for use with Roloc TR-style disc holders and right-angle grinders. Part of the 3M 777F series, this disc features a ceramic abrasive grain bonded to a heavy-duty polyester cloth backing rated YF weight, providing aggressive cut and durability in demanding material removal applications. The 50-grit coarse grade is suited for fast stock removal on metals, welds, and composite surfaces. Rated to 30,000 RPM, it is built for high-speed rotary tool use in industrial and fabrication environments. Licensed tradespeople and shop technicians are the primary installers and users.

This disc is used in metalworking, fabrication, maintenance, and surface preparation applications. The 1-1/2 inch diameter makes it well suited for work in tight areas, contoured surfaces, and confined weld zones where a larger disc cannot reach. The Type R attachment system allows fast disc changes without tools, reducing downtime during production or repair work. Typical applications include weld blending, scale removal, deburring, and surface conditioning on steel and similar materials.

Key Features

• Ceramic abrasive grain for aggressive, high-rate stock removal
• 50-grit coarse grade suited for weld blending and heavy material removal
• Roloc TR Type R quick-change attachment for tool-free disc swaps
• YF-weight polyester cloth backing for durability under high-load grinding
• Rated to 30,000 RPM for compatibility with high-speed right-angle grinders
• 1-1/2 inch diameter for access in confined and contoured work areas

Compatibility

Designed for use with Roloc TR Type R quick-change disc holders and compatible right-angle grinders and die grinders. The Type R button system is not interchangeable with standard Roloc Type S holders.

Installation Notes

Installation is performed by pressing the disc button firmly into a compatible Roloc TR disc holder until it locks in place. Verify the holder and grinder are rated to at least 30,000 RPM before use, and never exceed the disc speed rating. Disconnect or de-energize the tool before mounting or removing the disc. Wear appropriate eye and face protection as required by applicable workplace safety standards when operating abrasive grinding equipment.