Merit Abrasives 69957399707 Quick-change Disc 40 Grit 2 in

Product Description

The MERIT ABRASIVES 69957399707 is a coated quick-change abrasive disc designed for use with Power-Lock Type 3 (TR/Type III) and Type R attaching systems on handheld disc sanders. The disc measures 2 inches in diameter and carries a 40-grit aluminum oxide abrasive, placing it in the extra-coarse grade range for aggressive material removal. It features a Y-weight 2-ply polyester and cloth backing that adds rigidity and durability under high-speed operation. Maximum rated speed is 30,000 RPM. The brown-colored disc is built for fast cut rates and extended service life in demanding shop and field conditions. Licensed tradespeople and skilled metalworkers are the primary installers and users of this consumable abrasive.

This disc is suited for deburring, surface cleaning, and detailing work on a range of metals including 300 series stainless steel, brass, bronze, hard carbon steels, soft carbon steels, and titanium. It is intended for use with handheld disc sanders in both professional shop environments and on-site fabrication or maintenance work. The quick-change design allows rapid disc swaps without additional tooling, supporting efficient workflow on production and repair tasks alike.

Key Features

• 40-grit aluminum oxide abrasive for aggressive cutting and deburring
• Y-weight 2-ply polyester and cloth backing provides rigidity and extended disc life
• Compatible with TR (Type III) and Type R quick-change attaching systems
• Rated to 30,000 RPM for use with standard handheld disc sanders
• Effective on 300 series stainless, brass, bronze, hard and soft carbon steels, and titanium
• Series R766 construction with coated abrasive surface for faster cut rate

Compatibility

Designed for use with handheld disc sanders equipped with TR (Type III) or Type R quick-change attaching systems. Compatible material applications include 300 series stainless steel, brass, bronze, hard carbon steels, soft carbon steels, and titanium, per manufacturer data.

Installation Notes

This disc is installed and used by metalworkers, fabricators, and maintenance technicians. Before mounting or removing a disc, ensure the sander is fully powered off and disconnected from its power source. Verify that the disc is properly seated on the quick-change mandrel before operation and confirm the tool speed does not exceed the 30,000 RPM maximum rating of the disc. Inspect the disc for damage before each use and discard any disc that shows cracks, tears, or unusual wear.