Dewalt DW8424S Cut-off Wheel 4.5 in Type 1 60 Grit

Product Description

The DEWALT DW8424S is a Type 1 flat cut-off wheel designed for aggressive cutting on stainless steel and other ferrous materials. Built with aluminum oxide abrasive and a resinoid bond, this reinforced wheel delivers consistent stock removal across its service life. It measures 4.5 inches in diameter with a 0.045-inch thickness and a 7/8-inch arbor hole, making it a standard fit for 4.5-inch angle grinders. Rated at a maximum of 13,300 RPM, the wheel carries an A60S specification, indicating 60-grit hardness code S — well suited to cut-off work where a clean, controlled edge is required. Installation and use should be performed by qualified tradespeople following applicable safety standards.

This wheel is commonly used in fabrication shops, industrial maintenance, and field service environments where cutting stainless steel tubing, pipe, angle iron, or flat bar is routine. Its thin 0.045-inch profile minimizes material loss and reduces heat buildup during the cut, which is especially important when working with stainless steel to avoid heat discoloration and work hardening at the cut zone. Electricians, pipefitters, ironworkers, and general contractors reach for this wheel when precision cutting with an angle grinder is part of the workflow.

Key Features

• Aluminum oxide abrasive with resinoid bond for consistent cut performance on stainless steel
• Reinforced construction rated to 13,300 RPM for use on standard 4.5-inch angle grinders
• Thin 0.045-inch wheel profile reduces heat and material loss at the cut
• 60-grit, hardness code S — A60S specification for controlled cutting action
• Type 1 flat wheel geometry for straight cut-off applications
• 7/8-inch arbor hole fits most common angle grinder spindles

Compatibility

Designed for use with 4.5-inch angle grinders accepting a 7/8-inch arbor, operating at or below 13,300 RPM. Optimized for cutting stainless steel; suitable for general ferrous metal cut-off applications.

Installation Notes

This wheel must be installed and operated by personnel familiar with angle grinder safety requirements. Always inspect the wheel for cracks or damage before mounting, and never exceed the rated maximum RPM of 13,300. Ensure the grinder guard is properly positioned and that the arbor nut is secured before operation. ANSI B7.1 and OSHA 1910.243 provide governing safety standards for abrasive wheel use.