Norton 66252941047 Surface Grinding Wheel 80 Grit 7 in

Product Description

The NORTON 66252941047 is a Type 1 surface grinding wheel engineered for precision stock removal on metallic workpieces in industrial and production grinding applications. Built around a white aluminum oxide abrasive grain in a vitrified bond matrix, this wheel delivers consistent cutting action and free-cutting performance across a range of ferrous materials. The wheel measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. Grit is 80 with an H hardness code, classified as a medium-grade, semi-friable wheel rated to a maximum of 3600 RPM. Weight is approximately 1.59 pounds.

This wheel is suited for surface grinding, cylindrical grinding, and CNC cutting tool machine applications. Typical material applications include soft carbon steels, tool steels, and super alloys. The vitrified bond construction provides rigidity and porosity control, making it a dependable choice for production shops and toolrooms requiring repeatable surface finishes on hardened or unhardened steel workpieces. The 38A Type 1 series designation identifies its grade specification as 38A80-HVBE.

Key Features

• White aluminum oxide abrasive grain for free-cutting action on ferrous materials
• Vitrified bond construction for rigidity and dimensional stability during grinding
• 80 grit, H hardness (medium grade) balances stock removal rate with surface finish quality
• Semi-friable grain structure promotes self-sharpening behavior under load
• Non-porous, non-tapered Type 1 flat wheel profile for standard surface and cylindrical grinder spindles
• Grade specification 38A80-HVBE for traceability in production environments

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Verify spindle speed does not exceed the 3600 RPM maximum rating before mounting.

Installation Notes

Mounting should be performed by a qualified grinding machine operator following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test to check for fractures. Power down and lock out the machine before changing wheels, and ensure the arbor hole fits the spindle properly using correct blotters and flanges. Never exceed the maximum operating speed of 3600 RPM.