Merit Abrasives 69957399785 Quick-change Disc 3in 24 Grit

Product Description

The MERIT ABRASIVES 69957399785 is a 3-inch coated abrasive quick-change disc designed for handheld disc sanders in demanding metal fabrication and finishing applications. Built on a rigid Y-weight 2-ply polyester backing, this disc delivers a faster cut rate and longer service life compared to lighter-backed alternatives. The 24-grit aluminum oxide abrasive grain features a special coating that resists loading, keeping the disc cutting efficiently through stock removal and weld blending tasks. Rated to 20,000 RPM, it uses a Power-Lock Type 1 (TP / Type P) attaching system for secure, tool-free disc changes. Licensed tradespeople and fabricators performing aggressive material removal will find this disc well suited to their workflow.

This disc is engineered for moderately demanding applications across a broad range of metals. Suitable materials include 300 Series Stainless, 400 Series Stainless, Aluminum, Brass, Bronze, Hard Carbon Steels, Soft Carbon Steels, and Titanium. Primary use cases include stock removal, weld blending, and surface preparation where a very coarse to extra coarse cut is required. The Series R766 construction is intended for use with handheld disc sanders equipped with a Type P quick-change hub.

Key Features

• 24-grit aluminum oxide abrasive for aggressive stock removal and weld blending
• Y-weight 2-ply polyester backing provides rigidity and durability under load
• Special grain coating extends disc life and maintains cut rate on demanding metals
• Power-Lock Type 1 (TP / Type P) quick-change attaching system for fast disc swaps
• 20,000 RPM maximum speed rating suitable for standard handheld disc sanders
• Compatible with a wide range of ferrous and non-ferrous metals including stainless, aluminum, and titanium

Compatibility

Designed for use with handheld disc sanders equipped with a Type P (Power-Lock Type 1 / TP) quick-change hub. Compatible material applications include 300 Series Stainless, 400 Series Stainless, Aluminum, Brass, Bronze, Hard Carbon Steels, Soft Carbon Steels, and Titanium.

Installation Notes

Installation is performed by metal fabricators or maintenance technicians using a compatible Power-Lock Type P quick-change hub — no tools required for disc attachment. Always confirm the tool spindle speed does not exceed the 20,000 RPM disc rating before operation. Inspect the disc for damage or delamination before each use and discard any disc that shows signs of wear through the backing. Follow applicable ANSI B7.1 safety standards for the use, care, and protection of abrasive products.