Norton 66252843260 Type 27 Grinding Wheel 9 in 20 Grit

Product Description

The NORTON 66252843260 is a Type 27 depressed center grinding wheel designed for aggressive material removal on angle grinders. At 9 inches in diameter and 0.25 inches thick, this coarse 20-grit wheel combines Zirconia Alumina and Silicon Carbide abrasive materials in a resinoid bond construction. The result is a wheel suited for heavy stock removal, weld grinding, and surface preparation on ferrous and non-ferrous metals. It is rated to a maximum of 6,600 RPM and mounts via a 7/8-inch arbor hole. The resinoid bond and T-hardness code indicate durability under sustained grinding pressure. Licensed tradespeople and fabrication professionals are the primary installers and users of this product.

This wheel is used in metal fabrication shops, structural steel work, pipe fitting, and general maintenance applications where coarse grinding is required. The Type 27 depressed-center profile allows the wheel to be used at low angles for flat or surface grinding without the wheel flange interfering with the workpiece. It is compatible with standard 9-inch angle grinders equipped with a 7/8-inch arbor. The 20-grit coarse grade makes it well suited for rapid stock removal rather than finishing work.

Key Features

• Type 27 depressed center profile for low-angle surface grinding
• Dual abrasive blend: Zirconia Alumina and Silicon Carbide for aggressive cut rate
• 20-grit coarse grade optimized for heavy stock removal and weld grinding
• Resinoid bond construction with T-hardness code for durability under load
• 6,600 RPM maximum speed rating
• 7/8-inch arbor hole fits standard angle grinder spindles

Compatibility

Designed for use with angle grinders accepting a 9-inch, 7/8-inch arbor Type 27 grinding wheel. Confirm your grinder's maximum RPM rating meets or exceeds the wheel's 6,600 RPM rating before installation.

Installation Notes

Installation and operation should be performed by qualified personnel familiar with abrasive wheel safety standards, including ANSI B7.1 guidelines. Always power down and disconnect the angle grinder before mounting or removing the wheel. Inspect the wheel for cracks or damage before each use and never operate above the marked maximum RPM. Wear appropriate PPE including a face shield, gloves, and hearing protection during operation.