Norton 66253262508 Surface Grinding Wheel 46 Grit

Product Description

The NORTON 66253262508 is a Type 1 surface grinding wheel engineered for high-performance stock removal on ferrous metals and specialty alloys. Built around a ceramic abrasive grain in a vitrified bond matrix, this wheel measures 12 inches in diameter, 1 inch thick, with a 5-inch arbor hole. It carries a coarse 46 grit rating and an I hardness code, placing it in the medium-hardness range. The semi-friable ceramic grain fractures under load to continuously expose sharp cutting edges, reducing heat buildup and extending wheel life. Rated at a maximum of 2070 RPM, this wheel suits demanding production grinding applications where precision and consistent material removal are both required.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It performs across a broad range of materials including 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Its porous vitrified bond structure promotes coolant flow and chip clearance, making it well-suited for both wet and dry grinding setups in job shop and production environments. The blue wheel body corresponds to the 5SG series designation from NORTON.

Key Features

• Ceramic abrasive grain for aggressive, cool-cutting stock removal
• Vitrified bond with porous structure for improved coolant flow and chip clearance
• 46 grit coarse grade for high material removal rates
• I hardness (medium) balances wheel life with free-cutting action
• Semi-friable grain continuously self-sharpens under grinding pressure
• Compatible with surface grinders, cylindrical grinders, and CNC tool grinding machines

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Installation should be performed by a qualified grinding machine operator or maintenance technician following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips before mounting and perform a ring test. Never exceed the maximum rated speed of 2070 RPM. Use appropriate flanges and a blotter on each side of the wheel as required by machine specifications.