3M 7100142475 Quick Change Conditioning Disc 3 Inch Ao

Product Description

The 3M 7100142475 is a quick change surface conditioning disc designed for cleaning, blending, and finishing metal and composite workpieces in a single step. Built on an RC open-web material with aluminum oxide abrasive, the disc breaks down under medium pressure to continuously expose fresh fibers and mineral, maintaining a consistent cut rate throughout the disc's life. The open web construction resists loading from paint, corrosion, and soft metal debris, making it a practical choice for technicians who prep surfaces before applying coatings or final finishes. The disc measures 3 inches in diameter and is rated to 1,949 rpm.

This disc is suited for flat surface work on composites, aluminum, and other softer metals. Typical applications include blending welds, removing coatings, light deburring, and surface prep prior to painting or priming. The quick change attachment system allows fast disc swaps without additional tooling, reducing downtime during repetitive prep operations. It is used in fabrication, maintenance, and production environments where surface quality and workflow speed both matter.

Key Features

• Aluminum oxide abrasive on RC open-web material provides consistent initial and extended cut rate
• Load-resistant construction reduces clogging when working on composites, aluminum, and painted surfaces
• Open web responds to surface irregularities and minimizes gouging
• Suitable for blending, coating removal, finishing, and light deburring on flat surfaces
• Quick change attachment enables fast disc swaps and improves tool efficiency
• Available in multiple grades: dark brown extra coarse, brown coarse, maroon medium, and blue very fine

Compatibility

Designed for use with quick change disc holders and right-angle grinders or die grinders that accept standard quick change RC-type discs. Confirm your tool accepts 3-inch quick change discs before installation.

Installation Notes

Installation and disc changes should be performed with the tool unplugged or the air supply disconnected. Verify the tool's maximum rpm rating meets or exceeds the disc's 1,949 rpm rating before mounting. Do not exceed the rated speed. Inspect the disc for damage before each use and discard any disc that shows tears, fraying, or distortion.

Technical Specifications

• Diameter: 3 inches
• Maximum Speed: 1,949 rpm
• Abrasive Material: Aluminum Oxide
• Backing Type: RC Open Web
• Package Weight: 3.67 pounds
• Package Length: 12.75 inches
• Package Width: 9.5 inches
• Package Height: 6.75 inches
• UPC: 051115369150

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100142475