Norton 66252842017 Type 27 Grinding Wheel 4x1/8x5/8

Product Description

The NORTON 66252842017 is a Type 27 depressed center grinding wheel designed for aggressive material removal on metal surfaces. Built with Gemini Aluminum Oxide abrasive, this wheel delivers consistent cut rates and extended service life across a range of ferrous metal grinding applications. At 4 inches in diameter with a 1/8-inch thickness and a 5/8-inch arbor bore, it fits standard angle grinders used daily in fabrication, welding, and maintenance work. The depressed center profile keeps the grinding face at the correct angle while allowing the mounting hardware to sit below the work surface for better tool clearance and operator control.

This wheel is suited for professional metal grinding tasks in fabrication shops, construction sites, and industrial maintenance environments. It performs on mild steel, structural steel, and similar ferrous materials where weld blending, surface preparation, and stock removal are routine. Licensed tradespeople including ironworkers, pipefitters, welders, and maintenance mechanics reach for Type 27 wheels in day-to-day cutting and grinding operations. The 4-inch format is a common choice for work in confined areas or when using compact angle grinders.

Key Features

• Gemini Aluminum Oxide abrasive for consistent cut and extended wheel life on metal
• Type 27 depressed center profile provides clearance for mounting hardware and improved operator sightlines
• 4-inch diameter fits standard compact angle grinders used in fabrication and field work
• 1/8-inch thickness optimized for grinding and weld blending rather than cutting
• 5/8-inch arbor bore fits the most common angle grinder spindle size
• Sold individually with a case quantity of 25 for high-volume shop or jobsite use

Compatibility

Designed for use with standard angle grinders accepting a 5/8-inch arbor bore and rated for 4-inch Type 27 depressed center wheels. Intended for grinding ferrous metals.

Installation Notes

Installation must be performed by personnel familiar with abrasive wheel safety requirements. Always inspect the wheel for cracks or chips before mounting and never exceed the maximum RPM rated for the wheel. Ensure the grinder is unplugged or the power source is locked out before changing wheels. Use the correct flange and locking nut for a Type 27 profile and confirm the guard is properly positioned before operating.

Technical Specifications

• Wheel Type: Type 27 Depressed Center
• Abrasive Material: Gemini Aluminum Oxide
• Application: Metal Grinding
• Diameter: 4 inches
• Thickness: 1/8 inch
• Arbor Bore: 5/8 inch
• Maximum RPM: 15280
• Unit of Measure: Each
• Case Quantity: 25

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 66252842017