3M 7000121869 Quick Change Disc 7 Inch Ao

Product Description

The 3M 7000121869 is a quick change surface conditioning disc designed for one-step workpiece preparation ahead of final finishes and coatings. Built on a non-woven, resin-reinforced open web construction, it delivers a consistent cut rate while remaining flexible enough to remove burrs and surface contaminants without gouging the substrate. The disc mounts via a 5/8-11 arbor quick change interface, allowing fast swaps between operations. At 7 inches in diameter, it suits angle grinders and right-angle tools commonly used in fabrication and metalworking environments. Licensed trades and industrial metalworkers are the primary installers.

This disc is suited for moderate industrial applications including cleaning, deburring, and surface prep on both ferrous and non-ferrous metals as well as composites. It is load-resistant, making it a practical choice for aluminum and other soft metals prone to loading conventional abrasives. It performs reliably on flat surfaces and light edgework. Typical use cases include weld preparation, coating removal prep, and general surface conditioning in fabrication shops and maintenance environments.

Key Features

• Non-woven open web construction resists loading on aluminum and soft non-ferrous metals
• Flexible, pliable web removes burrs and surface contaminants without gouging the substrate
• Resin-reinforced disc provides consistent cut rate and repeatable surface finish
• 5/8-11 arbor quick change mount allows fast disc swaps and improves tool efficiency
• Multi-purpose abrasive works on ferrous and non-ferrous metals and composites
• Available in coarse, medium, and very fine grades to match conditioning requirements

Compatibility

Designed for use with angle grinders and right-angle tools equipped with a 5/8-11 quick change arbor. Works across ferrous metals, non-ferrous metals, and composites on flat surfaces and some edgework applications.

Installation Notes

Installation and disc changes should be performed by qualified metalworkers or maintenance technicians following the tool manufacturer's guard and RPM rating requirements. Confirm the tool's rated RPM does not exceed the disc's maximum operating speed before mounting. Wear appropriate PPE including eye and face protection during operation. Inspect the disc for damage before each use and discard any disc showing tears or delamination.

Technical Specifications

• Diameter: 7 inches
• Arbor Size: 5/8-11
• Abrasive Material: Aluminum Oxide (AO)
• Construction: Non-woven resin-reinforced open web
• Package Weight: 1.273 pounds
• Package Dimensions: 8.25 x 8.25 x 8.5 inches
• Unit of Measure: Each
• Minimum Order Quantity: 10
• UPC: 051115331539

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000121869