Norton 66252942060 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252942060 is a Type 1 vitrified aluminum oxide surface grinding wheel engineered for precision stock removal on metallic workpieces. Measuring 7 inches in diameter, 0.75 inches thick, with a 1.25-inch arbor hole, this wheel runs at a maximum of 3,600 RPM. The 60-grit, K-hardness (medium) specification positions it for moderate material removal with controlled surface finish. The white aluminum oxide abrasive is semi-friable, meaning it fractures under heat and load to expose fresh cutting edges, maintaining sharpness throughout the wheel's life. Licensed tradespeople and tool-room machinists are the primary installers and operators of this wheel.

This wheel is suited for surface grinding, cylindrical grinding, and CNC cutting tool machine applications in both shop and industrial environments. It performs well on soft carbon steels, tool steels, and super alloys where a consistent medium-grade cut is required. The vitrified bond provides rigidity and porosity control appropriate for wet or dry precision grinding operations. The 38A Type 1 series designation is a standard configuration accepted on common grinding machine spindles.

Key Features

• 60 grit, K hardness (medium grade) for balanced stock removal and surface quality
• White aluminum oxide abrasive — semi-friable for self-sharpening action
• Vitrified bond construction for rigidity and dimensional stability
• Type 1 straight wheel profile — no recess, non-tapered
• 3,600 RPM maximum operating speed rating
• Suitable for soft carbon steels, tool steels, and super alloys

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines accepting a 7-inch diameter, 1.25-inch arbor hole, Type 1 straight wheel.

Installation Notes

Grinding wheel mounting and dressing must be performed by qualified personnel following ANSI B7.1 safety standards. Before mounting, inspect the wheel for cracks using the ring test and confirm the machine spindle speed does not exceed the wheel's 3,600 RPM maximum rating. Always install proper wheel flanges and guards before operation, and conduct a brief no-load run after mounting before engaging the workpiece. Personal protective equipment including face shield and hearing protection is required during grinding operations.