Norton 66252838456 Type 27 Grinding Wheel 4.5in 36 Grit

Product Description

The NORTON 66252838456 is a Type 27 depressed center grinding wheel designed for aggressive material removal on angle grinders. The wheel measures 4.5 inches in diameter and 1/16 inch thick, with a 7/8 inch arbor hole. It is made from ceramic alumina abrasive bonded with a resinoid bond, rated at a coarse 36 grit. Ceramic alumina cuts faster and runs cooler than standard aluminum oxide, making it well suited for heavy stock removal on steel, stainless steel, and other hard metals. The maximum operating speed is 13,580 RPM. This wheel is sold individually with a minimum order quantity of 25 units.

This wheel is intended for use with standard 4.5 inch angle grinders in metal fabrication, weld grinding, surface preparation, and structural steel work. It is appropriate for professional tradespeople including ironworkers, welders, pipefitters, and general fabricators working in both shop and field environments. The Type 27 raised-hub profile allows for flat grinding and blending passes at low angles. Its coarse 36 grit makes it most effective for rapid material removal rather than fine finishing work.

Key Features

• Ceramic alumina abrasive for fast, cool-cutting performance on hard metals
• Type 27 depressed center profile allows flat-angle grinding and blending
• 36 grit coarse grade rated for aggressive stock removal
• Resinoid bond provides durability and resistance to impact during grinding
• 13,580 RPM maximum operating speed compatible with standard 4.5 inch angle grinders
• 7/8 inch arbor hole fits common angle grinder spindle sizes

Compatibility

Designed for use with 4.5 inch angle grinders. The 7/8 inch arbor hole fits standard angle grinder spindles. Verify that your grinder's rated RPM meets or exceeds 13,580 RPM before mounting this wheel.

Installation Notes

Grinding wheel installation and replacement should be performed by qualified personnel following ANSI B7.1 safety standards and the grinder manufacturer's instructions. Always disconnect power and confirm the grinder is fully de-energized before changing wheels. Inspect the wheel for cracks or chips before mounting and never operate above the marked maximum RPM. Use the correct flanges and guard for Type 27 wheels, and allow the wheel to run freely for at least one minute before engaging workpiece contact.