Dewalt DWA8909FH Type 27 Grinding Wheel 4.5in Ceramic 24 Grit

Product Description

The DEWALT DWA8909FH is a Type 27 depressed center grinding wheel designed for aggressive material removal on angle grinders. Measuring 4.5 inches in diameter and 0.25 inches thick, it uses a 24-grit ceramic abrasive bonded with a resinoid bond for fast, consistent grinding action. The wheel is reinforced, rated to a maximum of 13,300 RPM, and mounts via a standard 5/8-11 threaded arbor. It is suited for heavy stock removal on ferrous metals, weld seams, and castings. Licensed trades and metalworkers rely on this wheel for high-removal-rate grinding in fabrication and maintenance work.

This wheel is intended for use on 4.5-inch angle grinders in industrial, commercial, and job-site environments. Its 24-grit ceramic construction delivers fast cutting action on steel, cast iron, and similar ferrous materials. Typical applications include weld dressing, surface prep, and deburring. The Type 27 depressed-center profile provides clearance for flat or slightly contoured workpieces and is a common wheel geometry across fabrication shops and field maintenance operations.

Key Features

• 24-grit ceramic abrasive for fast, aggressive stock removal
• Type 27 depressed-center profile for flat surface grinding clearance
• Resinoid bond with hardness code R for durability under load
• Reinforced construction rated to 13,300 RPM maximum
• 5/8-11 threaded connector for standard angle grinder spindles
• Compact 4.5-inch diameter fits common 4.5-inch grinders

Compatibility

Designed as a direct-fit replacement for 4.5-inch Type 27 depressed center grinding wheels using a 5/8-11 threaded arbor mount, compatible with standard angle grinders accepting that spindle size.

Installation Notes

Installation should be performed by a qualified operator following the grinder manufacturer's instructions and ANSI B7.1 safety requirements for abrasive wheel use. Disconnect and de-energize the angle grinder before mounting or removing any wheel. Inspect the wheel for cracks or chips before installation and never exceed the 13,300 RPM maximum speed rating. Always install the proper guard and wear appropriate PPE including a face shield when operating grinding wheels.