Norton 66252942307 Surface Grinding Wheel 7in 60 Grit

Product Description

The NORTON 66252942307 is a Type 1 surface grinding wheel engineered for precision material removal on hard ferrous metals and exotic alloys. Built around a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long service life in surface grinding, cylindrical grinding, and CNC tool grinding applications. It measures 7 inches in diameter, 3/4 inches thick, with a 1-1/4 inch arbor hole. The 60-grit medium-grade specification removes stock efficiently while leaving a finish suitable for tool and die work. Maximum operating speed is rated at 3600 RPM. The porous, semi-friable grain structure keeps the wheel cool and free-cutting under continuous load.

This wheel is suited for grinding 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The 5SG Type 1 series is a common choice in maintenance shops, tool rooms, and production grinding operations where consistent performance across multiple hard-to-grind materials is required. Licensed machinists, tool-and-die makers, and grinding specialists are the primary users.

Key Features

• Ceramic abrasive grain provides aggressive, cool-cutting action on hard and heat-sensitive alloys
• Vitrified bond offers rigid grain support and consistent geometry throughout wheel life
• Porous structure promotes coolant flow and reduces heat buildup at the work surface
• 60 grit, J hardness (medium grade) balances stock removal rate with surface finish quality
• Type 1 flat-wheel profile fits standard surface and cylindrical grinder flanges
• Rated to 3600 RPM for safe use on conventional grinding spindles

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. Arbor hole size is 1-1/4 inches; verify spindle diameter and flange compatibility before mounting.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified personnel 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. Power down and lock out the grinder before changing wheels. Never exceed the 3600 RPM maximum operating speed marked on the wheel; confirm machine spindle speed before use.