Norton 66252939827 Surface Grinding Wheel 7in 100 Grit

Product Description

The NORTON 66252939827 is a Type 1 surface grinding wheel built for precision material removal on ferrous metals and specialty alloys. It measures 7 inches in diameter by 1/4 inch thick with a 1-1/4 inch arbor hole. The wheel is made from white aluminum oxide abrasive bonded with a vitrified bond, rated at 100 grit for fine-grade stock removal. Its K hardness code places it in the medium hardness range, and the semi-friable grain structure helps the wheel self-dress as it cuts. Maximum operating speed is 3,600 RPM. Machinists, tool grinders, and grinding technicians install and operate this wheel in production and maintenance grinding applications.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It is well suited for grinding soft carbon steels, tool steels, and super alloys where a fine surface finish and controlled stock removal are required. The non-porous, vitrified bond construction holds form well under moderate grinding pressure, making it a practical choice for both light finishing passes and moderate material removal on precision workpieces.

Key Features

• White aluminum oxide abrasive for consistent cut on ferrous and alloy workstations
• Vitrified bond for form stability and easy dressing
• 100 grit fine grade delivers smooth surface finish with controlled material removal
• K hardness (medium) resists glazing while maintaining wheel shape
• Semi-friable grain promotes self-sharpening action under load
• Non-porous construction suited for dry and wet grinding environments

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Series designation is 38A Type 1 with internal specification code 38A100-KVBE.

Installation Notes

Grinding wheel mounting should be performed by a qualified machinist or grinding technician following ANSI B11.9 safety standards for grinding machines. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the 3,600 RPM maximum rated speed. Use correct flange hardware and blotters as required by the grinder manufacturer.