Norton 66252843190 Type 27 Grinding Wheel 4.5in 30 Grit

Product Description

The NORTON 66252843190 is a Type 27 depressed center grinding wheel designed for aggressive material removal on angle grinders. Built with a zirconia alumina abrasive grain bonded in a resinoid matrix, this coarse 30-grit wheel cuts fast through weld seams, casting flash, and surface stock on ferrous metals. The reinforced construction handles the lateral and radial stresses typical of angle grinder use. At 4.5 inches in diameter and 0.125 inches thick, it fits standard 4.5-inch angle grinders with a 7/8-inch arbor and carries a 13,580 RPM maximum speed rating.

This wheel is suited for fabrication shops, structural steel work, pipeline prep, and on-site metalworking where fast, controlled stock removal is needed. The Type 27 depressed center profile keeps the grinding face low to the workpiece, allowing flatter grinding angles and improved operator visibility. It is used by ironworkers, pipefitters, welders, and general fabricators across both residential construction and commercial industrial settings.

Key Features

• Zirconia alumina abrasive grain for fast, aggressive cutting on ferrous metals
• 30 grit coarse grade for high material removal rates
• Resinoid bond with reinforced construction for durability under lateral load
• Type 27 depressed center profile for low grinding angle and workpiece visibility
• 13,580 RPM maximum speed rating compatible with standard 4.5-inch angle grinders
• 7/8-inch arbor hole fits common angle grinder spindles directly

Compatibility

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

Installation Notes

Installation should be performed by a qualified operator following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always disconnect or de-energize the angle grinder before mounting or removing the wheel. Inspect the wheel for cracks or damage before each use and never operate above the rated maximum RPM. Use the correct flanges and arbor hardware specified for Type 27 wheels.