Norton 66252849378 7 Inch Type 27 Grinding Wheel 20 Grit

Product Description

The NORTON 66252849378 is a Type 27 depressed-center grinding wheel designed for aggressive material removal on angle grinders and compatible right-angle grinding tools. Built with aluminum oxide abrasive in a resinoid bond, this 7-inch wheel delivers consistent stock removal on ferrous metals, castings, and weld seams. The coarse 20-grit construction removes material fast, making it suited for heavy grinding, weld blending, and surface conditioning. A reinforced construction and medium hardness rating (hardness code P) provide structural integrity at the rated speed of 8,600 RPM. Fabricators, ironworkers, pipe fitters, and maintenance technicians reach for this wheel when speed of cut matters more than surface finish.

This wheel fits standard 7-inch angle grinders with a 5/8-inch arbor connection. It is commonly used in fabrication shops, structural steel work, pipeline welding prep, and heavy industrial maintenance. The Type 27 depressed-center profile allows flat and flush grinding passes close to workpiece edges and corners. The semi-friable aluminum oxide grain self-sharpens during use, sustaining cut rate across the wheel's service life. It is sold individually and suits applications where coarse, rapid grinding is the primary task.

Key Features

• Type 27 depressed-center profile for flat and flush grinding passes
• Aluminum oxide abrasive, semi-friable, for consistent self-sharpening performance
• Coarse 20-grit rating for high material removal rate on ferrous metals and welds
• Resinoid bond with reinforced construction rated to 8,600 RPM
• Medium hardness (code P) balances wheel life with cut rate
• 5/8-inch arbor hole fits standard 7-inch angle grinder spindles

Compatibility

Designed for use on 7-inch angle grinders equipped with a 5/8-inch arbor spindle. Verify that the grinder's rated no-load RPM does not exceed 8,600 RPM before mounting this wheel.

Installation Notes

Installation should be performed by a qualified operator following ANSI B7.1 safe use guidelines for abrasive wheels. Always disconnect or de-energize the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before each use and perform a ring test on vitrified wheels; visually inspect resinoid-bond wheels for damage. Never exceed the maximum rated speed of 8,600 RPM, and ensure the guard is in place before starting the tool.