Norton 66252836796 Type 27 Grinding Wheel 4.5in 24 Grit

Product Description

The NORTON 66252836796 is a Type 27 depressed center grinding wheel designed for aggressive material removal on metal surfaces. Built with aluminum oxide abrasive and a resinoid bond, this wheel delivers consistent stock removal on steel, iron, and ferrous alloys. At 24 grit, it is rated Extra Coarse — suited for weld grinding, surface prep, and deburring where speed of cut matters more than finish quality. The wheel measures 4.5 inches in diameter and 0.25 inches thick, with a 7/8 inch arbor hole. It is rated to a maximum of 13,580 RPM. Fabricators, pipefitters, and ironworkers are the primary users of this wheel.

This wheel fits standard 4.5 inch angle grinders with a 7/8 inch arbor, which are among the most common grinders found on commercial fabrication floors, job sites, and maintenance shops. The Type 27 depressed center profile positions the wheel below the flange, allowing flat grinding and surface blending at low angles. It is suited for weld dressing, rust removal, and surface conditioning on structural steel, plate, and pipe. The Extra Coarse 24 grit removes material quickly and is not intended for finish work or non-ferrous metals without confirming material compatibility.

Key Features

• Type 27 depressed center profile for flat-angle surface grinding and weld dressing
• 24 grit Extra Coarse aluminum oxide abrasive for fast stock removal
• Resinoid bond provides durability and resistance to shock loading during grinding
• 13,580 maximum RPM rating compatible with standard 4.5 inch angle grinders
• 7/8 inch arbor hole fits the most common grinder spindle size
• 0.2 pound weight keeps tool fatigue low during extended use

Compatibility

Designed for use on 4.5 inch angle grinders with a 7/8 inch arbor. Verify that the grinder's no-load RPM does not exceed the 13,580 RPM maximum rating of this wheel before mounting.

Installation Notes

Mounting and use of grinding wheels must comply with ANSI B7.1 safety standards and the grinder manufacturer's instructions. Always inspect the wheel for cracks or chips before mounting — never use a damaged wheel. Ensure the grinder is disconnected from power before changing wheels, and confirm the spindle RPM does not exceed the wheel's maximum RPM rating. Wear appropriate PPE including a face shield, gloves, and hearing protection during operation.