Merit Abrasives 08834167120 Quick-change Disc 120 Grit 3 in

Product Description

The MERIT ABRASIVES 08834167120 is a 3-inch quick-change coated abrasive disc designed for use with Power-Lock Type 3 (TR/Type III) quick-change disc systems. Built on a rigid polyester cloth backing with a Y-weight rating, it carries a zirconia alumina abrasive grain at 120 grit for fine-to-medium stock removal, weld blending, deburring, and surface conditioning. An advanced resin bond system holds the grain firmly under load, and a lubricating grinding aid reduces heat buildup during extended passes. Rated to 20,000 RPM, this disc is suited for handheld disc sanders in fabrication, maintenance, and finishing applications.

This disc is used across metal fabrication and finishing workflows where controlled material removal and surface quality matter. It performs on 300 and 400 series stainless steel, brass, bronze, hard carbon steels, soft carbon steels, and glass. Typical applications include weld blending on stainless structural components, deburring machined parts, and light stock removal before final finishing. It is intended for use with handheld disc sanders accepting TR or Type R quick-change attachments. The disc is sold individually but carries a minimum order quantity of 50 units.

Key Features

• Zirconia alumina abrasive grain provides consistent cut rate and longer service life compared to aluminum oxide on hard metals
• Rigid polyester Y-weight backing resists flex during aggressive grinding passes
• Advanced resin bond retains grain under high pressure and heat
• Lubricating grinding aid reduces heat buildup and smearing on stainless and non-ferrous metals
• Power-Lock TR (Type III) and Type R quick-change attachment for fast disc swaps without tools
• Rated to 20,000 RPM for safe use on standard handheld disc sanders

Compatibility

Compatible with handheld disc sanders equipped with TR (Type III) or Type R quick-change attachment systems. Suitable for use on 300 series stainless, 400 series stainless, brass, bronze, hard carbon steels, soft carbon steels, and glass.

Installation Notes

Installation is performed by pressing the Power-Lock button into a compatible TR or Type R mandrel until the locking mechanism engages. Always verify the tool spindle speed does not exceed the 20,000 RPM disc rating before use. Inspect the disc for damage, delamination, or loading before each use and replace immediately if defects are found. Use appropriate eye protection, gloves, and respiratory protection when grinding or deburring metal surfaces.