Merit Abrasives 69957399700 Quick-change Disc 120 Grit

Product Description

The MERIT ABRASIVES 69957399700 is a coated quick-change abrasive disc engineered for use with Power-Lock Type 3 (TR/Type III) and Type R attachment systems on handheld disc sanders. The disc measures 1-1/2 inches in diameter and runs aluminum oxide grain at 120 grit, a fine grade suited for deburring, cleaning, and surface detailing. A Y-weight 2-ply polyester and cloth backing provides rigidity and durability under high-cycle use. Maximum rated speed is 30,000 RPM. This disc is sold individually with a minimum order quantity of 100 units, making it a standard consumable item for trade shops and field technicians working across a range of metal substrates.

This disc is designed for use on 300 series stainless steel, brass, bronze, hard carbon steels, soft carbon steels, and titanium. It is well suited for production deburring, weld cleaning, and surface prep detailing where a rigid, fast-cutting disc is needed. The handheld disc sander is the specified machine type, making this a fit for HVAC sheet metal fabrication, plumbing rough-in metalwork, and light industrial maintenance applications where consistent finish quality on metal is required.

Key Features

• 120 grit aluminum oxide grain rated for fine-grade deburring and surface detailing
• Power-Lock Type 3 (TR/Type III) and Type R quick-change attachment system
• Y-weight 2-ply polyester and cloth backing for rigidity and extended disc life
• Rated to 30,000 RPM for use with standard handheld disc sanders
• Compatible with a broad range of metal substrates including stainless, brass, bronze, and carbon steels
• Series R766 construction with brown disc color and black button

Compatibility

Compatible with handheld disc sanders using TR (Type III) or Type R quick-change attachment systems. Rated for use on 300 series stainless steel, brass, bronze, hard carbon steels, soft carbon steels, and titanium.

Installation Notes

Installation is performed by a technician or tradesperson using a compatible handheld disc sander with a TR or Type R arbor. Before mounting the disc, confirm the tool spindle speed does not exceed the 30,000 RPM disc rating. Inspect the disc for damage before each use and do not use damaged or deformed discs. Always wear appropriate eye protection and follow applicable shop safety standards when operating abrasive discs.