Norton 66252941054 Surface Grinding Wheel 80 Grit 7 in

Product Description

The NORTON 66252941054 is a Type 1 surface grinding wheel engineered for precision material removal on soft carbon steels, tool steels, and super alloys. Built around an aluminum oxide abrasive grain in a vitrified bond matrix, it delivers consistent cut rate and form retention across extended use cycles. The wheel measures 7 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole and is rated to a maximum of 3,600 RPM. At 80 grit and K hardness, it sits in the medium-grade range, making it well suited for applications where a balance between stock removal and surface finish is required. Licensed machinists and grinding specialists typically specify this wheel for flat and surface grinding operations.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its semi-friable aluminum oxide grain continuously fractures under load to expose fresh cutting edges, which helps maintain a consistent finish on workpieces throughout the wheel life. The 38A series designation places it within a well-established family of general-purpose precision grinding wheels used in both job shop and production environments. It is a non-porous, non-tapered, no-recess Type 1 straight wheel.

Key Features

• Aluminum oxide abrasive with semi-friable grain for self-sharpening action during use
• Vitrified bond provides rigidity and consistent form retention under grinding pressure
• 80 grit, K hardness (medium grade) balances stock removal with surface finish quality
• Rated to 3,600 RPM maximum operating speed
• Type 1 straight wheel profile with no recess and no taper — direct drop-in for standard arbor setups
• Suitable for soft carbon steels, tool steels, and super alloys

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a Type 1 straight wheel with a 1.25-inch arbor hole and 7-inch diameter. Material applications include soft carbon steels, tool steels, and super alloys.

Installation Notes

Installation should be performed by a qualified machinist or grinding specialist following the machine manufacturer's mounting instructions and applicable ANSI B11 safety standards for abrasive wheel machinery. Always power down and lock out the grinder before mounting or removing the wheel. Inspect the wheel for cracks or chips before each installation — never mount a damaged wheel. Conduct a ring test and run the wheel at operating speed with the guard in place for at least one minute before bringing it into contact with the workpiece.