Norton 66252843181 Type 27 Grinding Wheel 4 in 24 Grit

Product Description

The NORTON 66252843181 is a Type 27 depressed center grinding wheel designed for aggressive material removal on metal and masonry surfaces. Built with a zirconia alumina and silicon carbide blend abrasive, this 4-inch wheel delivers a coarse 24-grit cut suited for heavy stock removal, weld grinding, and surface prep. The resinoid bond holds the abrasive grain firmly under load, while the hardness code T rating provides durability through demanding use cycles. At a maximum rated speed of 15,280 RPM, it is engineered for safe operation on standard 4-inch angle grinders. Licensed tradespeople and experienced fabricators use this wheel for ferrous and non-ferrous grinding tasks alike.

This wheel is sized for 4-inch angle grinders and fits arbor connections via its 3/8-inch hole size. The 1/4-inch thickness provides the rigidity needed for flat and contour grinding on steel, cast iron, stainless, and hard masonry. Typical applications include structural steel fabrication, pipeline prep, weld cleanup, and surface conditioning before coating or inspection. The Type 27 depressed center profile allows the wheel to be used at a low angle to the workpiece, giving the operator better visibility and control on flat stock.

Key Features

• Zirconia alumina and silicon carbide blend abrasive for aggressive, durable cutting action
• 24-grit coarse grade rated for heavy stock removal and weld grinding
• 15,280 maximum RPM rating for use on 4-inch angle grinders
• Resinoid bond with T hardness code for consistent grain retention under load
• Type 27 depressed center profile for low-angle grinding with improved sightlines
• 3/8-inch arbor hole fits standard angle grinder spindles

Compatibility

Designed for use with 4-inch angle grinders equipped with a 3/8-inch arbor connection. Verify that the tool spindle speed does not exceed the 15,280 RPM maximum rating of this wheel before mounting.

Installation Notes

Mounting and use of depressed center grinding wheels must comply with ANSI B7.1 safety standards and the angle grinder manufacturer's guidelines. Always inspect the wheel for cracks or damage before mounting and never operate above the marked maximum RPM. Install the proper guard before use and wear appropriate PPE including a face shield, gloves, and hearing protection. Power down and disconnect the grinder from its power source before mounting or removing the wheel.