Norton 66252842018 Type 27 Grinding Wheel 4x1/4x3/8

Product Description

The NORTON 66252842018 is a Type 27 depressed center grinding wheel engineered for metal grinding applications. Built with Gemini Aluminum Oxide abrasive, it delivers consistent stock removal on ferrous metals, structural steel, and weld seams. The wheel measures 4 inches in diameter with a 1/4-inch thickness and a 3/8-inch arbor bore. At a rated speed of 15,280 RPM, it is suited for use with small angle grinders in both fabrication shop and field service environments. Licensed tradespeople including ironworkers, pipefitters, and welders rely on this wheel for aggressive yet controlled grinding passes on workpiece surfaces.

This wheel is intended for metal grinding on mild steel, stainless steel, and similar ferrous materials. The Type 27 depressed center profile allows the operator to work at a low angle to the workpiece, improving surface contact and operator control during weld blending, surface prep, and material removal tasks. It is sold individually and is available in case quantities of 25 units, making it practical for shop stocking or job-site replenishment.

Key Features

• Gemini Aluminum Oxide abrasive grain for consistent cut rate on ferrous metals
• Type 27 depressed center profile for low-angle grinding and improved surface contact
• 4-inch diameter by 1/4-inch thick with 3/8-inch arbor bore for compact angle grinder fitment
• Rated at 15,280 RPM for compatibility with standard small angle grinders
• Sold as individual units with a case quantity of 25 for efficient shop stocking

Compatibility

Designed as a Type 27 depressed center grinding wheel for use with small angle grinders accepting a 3/8-inch arbor and rated for wheels up to 4 inches in diameter. Intended for grinding on metal surfaces including mild steel and structural steel.

Installation Notes

Mounting and replacement of grinding wheels should be performed by qualified personnel following ANSI B7.1 safety requirements and applicable OSHA regulations. Always power down and disconnect the grinder before changing wheels. Inspect the wheel for cracks or chips before mounting, and never exceed the maximum RPM marked on the wheel. Ensure the arbor size and grinder guard are correctly matched before operating.

Technical Specifications

• Wheel Type: Type 27 Depressed Center
• Abrasive Material: Gemini Aluminum Oxide
• Application: Metal Grinding
• Diameter: 4 inches
• Thickness: 1/4 inch
• Arbor Bore: 3/8 inch
• Maximum RPM: 15,280
• Unit of Measure: Each
• Case Quantity: 25

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 66252842018