Norton 66252843247 Type 27 Grinding Wheel 9in 24 Grit

Product Description

The NORTON 66252843247 is a Type 27 depressed center grinding wheel designed for aggressive material removal on angle grinders. Built with zirconia alumina abrasive at a 24 grit coarse grade, it delivers fast stock removal on hard metals including steel and stainless. The resinoid bond holds the abrasive firmly under load, while the hardness code S designation indicates a firm wheel suited for sustained pressure applications. At 9 inches in diameter and 0.25 inches thick, this wheel fits standard large-body angle grinders and is rated to a maximum of 6,000 RPM. It weighs 1.71 pounds and mounts via a 7/8-inch arbor hole.

This wheel is used in fabrication shops, weld grinding, pipeline work, and heavy surface conditioning where coarse, fast cutting action is required. The 24 grit coarse grade makes it appropriate for removing weld beads, flash, and surface scale from ferrous and non-ferrous metals. It is a common choice for ironworkers, pipefitters, fabricators, and metal trades professionals working with angle grinders in both shop and field settings.

Key Features

• Type 27 depressed center profile provides clearance and improved grinding angle on flat and contoured surfaces
• Zirconia alumina abrasive delivers aggressive cut rate and extended wheel life compared to standard aluminum oxide
• 24 grit coarse grade for rapid stock removal, weld grinding, and scale removal
• Resinoid bond with hardness code S for firm, consistent performance under sustained load
• 6,000 RPM maximum rating suitable for standard large-body angle grinders
• 7/8-inch arbor hole fits common angle grinder spindle configurations

Compatibility

Designed for use with angle grinders accepting a 9-inch Type 27 depressed center wheel with a 7/8-inch arbor connection.

Installation Notes

Installation and wheel changes must be performed by a qualified operator with the grinder unplugged or the power source locked out and tagged out per applicable safety standards. Inspect the wheel for cracks or damage before mounting and never exceed the 6,000 RPM maximum speed rating. Ensure the guard is properly positioned before operation, and verify the arbor flange and backing hardware are rated for the wheel diameter. Wheel mounting and grinder operation should comply with ANSI B7.1 standards for the use, care, and protection of abrasive wheels.