Merit Abrasives 69957399725 Quick-change Disc 3 in 150 Grit

Product Description

The MERIT ABRASIVES 69957399725 is a 3-inch quick-change abrasive disc engineered for use with TR (Type III) and Type R attaching systems on handheld disc sanders. It uses aluminum oxide abrasive at 150 grit, rated Very Fine grade, bonded to a rigid X-weight 2-ply polyester backing for extended service life and a faster cut rate compared to lighter-backed alternatives. The disc is coated brown and carries a maximum operating speed of 20,000 RPM. Licensed tradespeople and fabrication pros reach for this disc when precision surface work demands consistent, repeatable abrasion without backing flex or premature breakdown.

This disc is suited for deburring, cleaning, and detailing operations on 300 series stainless steel, brass, bronze, hard carbon steels, soft carbon steels, and titanium. It fits residential and commercial fabrication, maintenance, and finishing workflows where a quick-change interface is required. The rigid polyester backing makes it particularly effective on flat and near-flat surfaces where controlled material removal is the priority. It is sold individually, with a minimum order quantity of 50 units.

Key Features

• 150 grit aluminum oxide abrasive — Very Fine grade for deburring, cleaning, and surface detailing
• X-weight 2-ply polyester backing provides rigidity and extended disc life
• Rated to 20,000 RPM for compatibility with standard handheld disc sanders
• TR (Type III) and Type R quick-change compatibility for fast disc swaps without tools
• Effective on 300 series stainless, brass, bronze, soft and hard carbon steels, and titanium
• Coated construction resists loading and maintains cut rate through the disc life

Compatibility

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

Installation Notes

Installation is performed by the operator or technician using the tool. Verify the disc is fully seated on the quick-change arbor before powering the sander. Do not exceed the rated maximum of 20,000 RPM. Inspect the disc for damage, delamination, or loading before each use and replace if compromised.