Merit Abrasives 69957399721 Quick-change Disc 60 Grit

Product Description

The MERIT ABRASIVES 69957399721 is a coated abrasive quick-change disc designed for aggressive material removal and surface finishing in demanding trade and fabrication applications. Built on an X-weight, 2-ply cloth and polyester backing, this rigid disc runs at up to 20,000 RPM and delivers consistent cut on a wide range of metals. At 3 inches in diameter with a 60-grit aluminum oxide abrasive, it targets medium-duty deburring, cleaning, and surface preparation tasks. The Power-Lock Type 3 (TR/Type III) attachment system allows fast disc swaps without tools, reducing downtime on the job. Fabricators, metalworkers, and maintenance techs are the primary users.

This disc is suited for use with handheld disc sanders equipped with a Type R or TR quick-change arbor. It performs on 300 and 400 series stainless steel, aluminum, brass, bronze, hard and soft carbon steels, and titanium. Typical applications include weld seam cleanup, scale removal, deburring cut edges, and light detailing work on fabricated assemblies. The coated aluminum oxide abrasive provides a consistent scratch pattern and holds up well through repeated passes on hard and soft metals alike.

Key Features

• 60-grit aluminum oxide abrasive for medium to coarse material removal
• X-weight, 2-ply cloth and polyester backing for rigidity and durability under load
• Power-Lock Type 3 (TR/Type III) quick-change attachment for tool-free disc swaps
• 20,000 RPM maximum rated speed
• Effective on stainless steel, aluminum, brass, bronze, carbon steels, and titanium
• Merit R766 Series construction optimized for deburring, cleaning, and detailing

Compatibility

Compatible with handheld disc sanders equipped with a Type R or TR (Type III) quick-change arbor system. Rated for use on 300 Series Stainless, 400 Series Stainless, Aluminum, Brass, Bronze, Hard Carbon Steels, Soft Carbon Steels, and Titanium.

Installation Notes

Installation requires a handheld disc sander fitted with a compatible Type R or TR quick-change mandrel. Verify the tool spindle speed does not exceed the 20,000 RPM disc rating before mounting. Inspect the disc for damage before each use and discard any disc that shows cracking, gouging, or delamination. Follow applicable ANSI B7.1 safety standards and always use appropriate eye and face protection when operating coated abrasive discs.