3M 7100086776 Scotch-brite Hs-dr Quick Change Disc 4 in

Product Description

The 3M 7100086776 is a Scotch-Brite HS-DR series non-woven quick change abrasive disc designed for surface conditioning, blending, and finishing applications in metalworking and fabrication environments. It uses aluminum oxide as the abrasive material and carries a medium grade rating — the standard grading scale for non-woven products where grit number does not apply. The disc measures 4 inches in diameter and attaches via the Roloc TR quick change system, allowing fast one-handed disc swaps without tools. Maximum operating speed is 9,000 RPM. This disc is typically installed and used by metal fabricators, welders, pipefitters, and maintenance technicians working on surface prep tasks.

The HS-DR disc is suited for deburring, blending weld seams, removing surface oxides, and light stock removal on ferrous and non-ferrous metals. The non-woven construction conforms to irregular contours and curved surfaces better than rigid bonded abrasive discs, making it a practical choice for finishing work where maintaining base metal profile is important. It is used with any right-angle grinder or die grinder equipped with a Roloc TR mandrel. Typical applications include shop fabrication, maintenance repair, and pipeline prep work.

Key Features

• Non-woven aluminum oxide construction provides consistent cut and finish throughout disc life
• Medium grade abrasiveness suits surface blending, weld seam smoothing, and oxide removal
• Roloc TR quick change attachment enables fast one-handed disc changes
• 4-inch diameter fits standard Roloc TR right-angle and die grinder mandrels
• Rated to 9,000 RPM maximum operating speed
• Maroon color identifies medium grade non-woven construction in standard Scotch-Brite color coding

Compatibility

Designed for use with right-angle grinders and die grinders fitted with a Roloc TR quick change mandrel. Compatible with any tool accepting 4-inch Roloc TR non-woven abrasive discs.

Installation Notes

Installation and use should be performed by trained personnel familiar with abrasive product safety requirements. Always verify the tool's rated RPM meets or exceeds the disc's 9,000 RPM maximum before mounting. Secure the Roloc TR disc firmly onto the mandrel until the locking mechanism engages before powering the tool. Wear appropriate PPE including eye protection and gloves, and never exceed the disc's rated maximum speed.

Technical Specifications

• Series: HS-DR
• Abrasive Type: Non-Woven
• Quick Change Type: Roloc TR
• Disc Diameter: 4 inches
• Abrasive Material: Aluminum Oxide
• Grade: Medium
• Maximum RPM: 9,000
• Color: Maroon
• Package Quantity: 25 discs per inner, 100 discs per case

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100086776