Norton 66252843594 Type 27 Grinding Wheel 4.5 in 24 Grit

Product Description

The NORTON 66252843594 is a Type 27 depressed center grinding wheel designed for aggressive stock removal on metal and fabricated surfaces. Built with aluminum oxide abrasive and a resinoid bond, this 4.5-inch wheel delivers coarse 24-grit cutting action suited to weld grinding, surface prep, and deburring tasks. It is rated to a maximum of 13,580 RPM and fits standard 7/8-inch arbor angle grinders. At 0.155 pounds, it is lightweight without sacrificing durability. The resinoid bond holds the abrasive grain firmly under load, making it a reliable choice for sustained grinding passes in metal fabrication and maintenance environments.

This wheel is used in metalworking, fabrication shops, and field maintenance settings where fast material removal is required. The Type 27 raised-hub profile keeps the grinding face at a low angle to the workpiece, reducing gouging and improving control on flat and curved surfaces. Typical applications include grinding welds flush, cleaning mill scale, removing rust, and prepping surfaces before welding or coating. It is well suited to ferrous metals and is installed on 4.5-inch angle grinders by fabricators, pipefitters, ironworkers, and maintenance technicians.

Key Features

• Type 27 depressed-center profile for low-angle flat and weld grinding
• 24-grit coarse aluminum oxide abrasive for aggressive stock removal
• Resinoid bond construction holds grain under sustained load
• 13,580 maximum RPM rating for standard 4.5-inch angle grinders
• 7/8-inch arbor hole fits common angle grinder spindle sizes
• Lightweight at 0.155 pounds for reduced operator fatigue

Compatibility

Designed for use on 4.5-inch angle grinders with a 7/8-inch arbor spindle and a minimum no-load speed rating of 13,580 RPM or higher.

Installation Notes

Installation and removal of grinding wheels must be performed by qualified personnel following ANSI B7.1 safety standards and the grinder manufacturer instructions. Confirm the grinder spindle speed does not exceed the 13,580 RPM maximum rating marked on the wheel before mounting. Disconnect power and allow the tool to come to a complete stop before changing wheels. Always use the correct flange size and inspect the wheel for cracks or damage before each use — do not use a damaged wheel.