3M 7000121118 Scotch-brite Bf-dc Disc 8 Inch Ao Medium

Product Description

The 3M 7000121118 is a Scotch-Brite BF-DC Blend and Finish Disc designed for surface conditioning work on metal. Built on an open-web nylon construction impregnated with aluminum oxide medium-grade mineral, this 8-inch disc aggressively removes weld burns, deburrs edges, strips rust, and leaves a consistent satin finish on the workpiece. It mounts on a 1/2-inch arbor and is rated for a maximum operating speed of 3000 RPM. Licensed HVAC technicians, fabricators, pipefitters, and metal finishing tradespeople rely on this disc for prep work between welding passes and final surface refinement.

This disc suits both residential shop environments and light industrial fabrication settings. It is well-suited for use on ferrous and non-ferrous metals where blending, deburring, and rust removal are required before coating or inspection. The disc can be run individually on a straight-shaft tool or bench motor, or stacked with additional discs to widen the effective cleaning surface for broader coverage on flat or irregular workpieces.

Key Features

• Aluminum oxide medium-grade mineral for efficient weld burn, burr, and rust removal
• Open-web load-resistant construction resists clogging and extends disc service life
• Springy nylon fibers conform to irregular and contoured surfaces for uniform finish results
• Compatible with straight-shaft tools and bench motors; discs can be stacked for broader coverage
• 1/2-inch arbor mount rated to 3000 RPM maximum operating speed
• Delivers consistent satin finish without the aggressive material removal of coated abrasives

Compatibility

Designed for use on straight-shaft grinders and bench motors accepting a 1/2-inch arbor, operating at or below 3000 RPM. Suitable for conditioning ferrous and non-ferrous metal surfaces in fabrication and metalworking applications.

Installation Notes

Installation and disc changes should be performed with the tool powered off and unplugged or locked out per applicable OSHA lockout/tagout procedures. Confirm the tool spindle speed does not exceed the 3000 RPM disc rating before operation. Inspect the disc for tears or damage before mounting. Eye protection and appropriate PPE are required when operating abrasive discs.

Technical Specifications

• Diameter: 8 inches
• Arbor Size: 1/2 inch
• Maximum Speed: 3000 RPM
• Abrasive Mineral: Aluminum Oxide
• Grade: Medium
• Unit of Measure: Each
• Weight: 0.28 pounds
• Package Length: 16.5 inches
• Package Width: 16.44 inches
• Package Height: 9.25 inches
• UPC: 00048011641690

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121118