Merit Abrasives 69957399739 Quick-change Disc 40 Grit

Product Description

The MERIT ABRASIVES 69957399739 is a Power-Lock Type 1 quick-change abrasive disc rated for use on handheld disc sanders in demanding metal fabrication and finishing work. Built on a Y-weight 2-ply polyester backing, this disc delivers a rigid, durable platform for aggressive stock removal and weld blending. The 40-grit aluminum oxide grain is coated for extended life and faster cut rates compared to uncoated abrasive formats. At 0.75 inches in diameter, it fits compact quick-change systems and is rated to a maximum of 40,000 RPM. Fabricators, welders, and metal finishers working with ferrous and nonferrous alloys will find this disc suited to moderately demanding finishing cycles.

This disc is designed for metal surface prep applications including stock removal and weld blending on a range of materials. Compatible materials include 300 Series Stainless, 400 Series Stainless, Aluminum, Brass, Bronze, Hard Carbon Steels, Soft Carbon Steels, and Titanium. The coarse 40-grit cut rate makes it appropriate for initial passes where aggressive material removal is required before finishing grits are applied. It is intended for use with handheld disc sanders equipped with a Type P quick-change attaching system.

Key Features

• 40-grit aluminum oxide grain provides coarse-grade stock removal and weld blending performance
• Y-weight 2-ply polyester backing offers rigid support for consistent cut on contoured and flat surfaces
• Special grain coating extends disc life and improves cut rate on moderately demanding applications
• Type P Power-Lock attaching system for fast disc changes on compatible handheld disc sanders
• Rated to 40,000 RPM for use at full tool operating speed
• Suitable for use on stainless steels, carbon steels, aluminum, brass, bronze, and titanium

Compatibility

Designed for use with handheld disc sanders equipped with a Type P Power-Lock quick-change attaching system. 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, welders, and finishing technicians using compatible quick-change handheld disc sanders. Before mounting or removing the disc, power down the tool and confirm the spindle has come to a full stop. Verify the disc RPM rating meets or exceeds the tool's no-load RPM before use. Always follow the tool manufacturer's guidelines and applicable safety standards when operating abrasive discs at high speed.