3M 7100077044 Quick-change Disc 3 Inch 40 Grit Ceramic Roloc Tsm

Product Description

The 3M 7100077044 is a quick-change abrasive disc engineered for aggressive material removal in grinding and finishing applications. Part of the 3M 947A series, it uses a premium ceramic alumina abrasive on a polyester cloth backing rated at an X-weight. The 3-inch diameter disc mounts via the Roloc TSM attaching system, allowing fast one-handed disc changes without tools. Rated to 20000 RPM, it handles demanding stock removal on metal, weld seams, and surface prep work. The coarse 40 grit and maroon ceramic abrasive make it well suited for cutting through scale, corrosion, or base material quickly. A silver button locks the disc securely to compatible Roloc TSM backup pads.

This disc is used in fabrication shops, maintenance facilities, and industrial service environments where fast disc changes and consistent cut rates matter. Typical applications include weld blending, rust removal, deburring, and surface conditioning on ferrous and non-ferrous metals. The coated ceramic construction resists loading and maintains cut rate longer than aluminum oxide alternatives on hard alloys and stainless. Licensed tradespeople in HVAC fabrication, pipefitting, and structural work commonly use discs in this class for field prep and shop work.

Key Features

• Premium ceramic alumina abrasive for high cut rate and extended disc life on hard metals
• Roloc TSM attaching system enables fast one-handed disc changes on compatible backup pads
• 40 grit coarse grade for aggressive stock removal, weld blending, and rust removal
• Polyester cloth X-weight backing resists tearing under load at high RPM
• 20000 RPM maximum speed rating suits most right-angle and die grinders
• Maroon color coding aids quick identification of grit grade at the worksite

Compatibility

Designed for use with Roloc TSM quick-change backup pads and holders. Verify that the backup pad and grinder are rated to match or exceed the 20000 RPM disc rating before use.

Installation Notes

Installation is performed by pressing the disc button onto a compatible Roloc TSM backup pad until it clicks and seats securely. Power down and disconnect the grinder from its power source before mounting or removing any disc. Confirm the grinder RPM rating meets or exceeds the disc maximum before operating. Inspect the disc for cracks or damage before each use and replace any disc that shows signs of wear through to the backing.