Norton 66252843240 Type 27 Grinding Wheel 9 in 24 Grit

Product Description

The NORTON 66252843240 is a Type 27 depressed center grinding wheel designed for heavy-duty material removal on angle grinders. Measuring 9 inches in diameter with a 1/8-inch thickness, this wheel uses a Zirconia Alumina and Silicon Carbide blend abrasive bonded with a resinoid bond system. The 24-grit coarse grade makes it well suited for aggressive stock removal, weld grinding, and surface prep on hard metals and masonry. A 5/8-11 threaded hub provides a secure connection to compatible angle grinder spindles. Rated to a maximum of 6,000 RPM, the wheel carries a hardness code of T, indicating a hard-grade bond that holds up under sustained pressure and lateral load.

This wheel is intended for use on angle grinders in both residential trade and commercial jobsite applications. Typical use cases include weld seam grinding, edge blending, casting cleanup, and surface conditioning on ferrous metals, non-ferrous metals, and masonry substrates. The coarse 24-grit specification makes this a first-pass or rough-cut wheel rather than a finishing tool. It is commonly used by pipefitters, ironworkers, sheet metal fabricators, HVAC installers working with duct and structural steel, and general construction tradespeople who need fast, aggressive material removal.

Key Features

• Type 27 depressed center profile allows flat and flush grinding near work surfaces
• Zirconia Alumina and Silicon Carbide blend abrasive for aggressive stock removal on metal and masonry
• 24-grit coarse grade rated for heavy material removal and weld grinding
• Resinoid bond with hardness code T provides durability under sustained grinder pressure
• 5/8-11 threaded connector fits standard angle grinder spindles
• 6,000 RPM maximum speed rating for safe operation on compatible grinders

Compatibility

Designed for use with angle grinders equipped with a 5/8-11 threaded spindle. Consult your grinder manufacturer specifications to confirm the tool's maximum RPM meets or stays below the 6,000 RPM rating of this wheel before use.

Installation Notes

Mounting and replacement of grinding wheels should be performed by qualified personnel following ANSI B7.1 safety standards and the grinder manufacturer's guidelines. Always power down and disconnect the grinder from its power source before changing wheels. Inspect the wheel for cracks or damage before mounting, and perform a ring test where applicable. Never operate this wheel above its rated maximum RPM, and always use the appropriate guard.