Norton 66252941026 Surface Grinding Wheel 46 Grit 7 in

Product Description

The NORTON 66252941026 is a Type 1 surface grinding wheel engineered for precision material removal on soft carbon steels, tool steels, and super alloys. It measures 7 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole. The wheel is built from aluminum oxide abrasive bonded with a vitrified bond system, rated at a maximum of 3600 RPM. The 46 grit, J hardness (coarse grade) specification positions this wheel for aggressive stock removal while maintaining workpiece control. It is installed and operated by machinists and grinding technicians in production and toolroom environments.

This wheel is suited for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It is applicable in both production shop and toolroom settings where consistent material removal on ferrous metals and super alloys is required. The Series 38A Type 1 designation indicates a straight-profile, full-face wheel geometry standard in horizontal-spindle surface grinding applications. Typical users include tool and die shops, aerospace component manufacturers, and general metalworking facilities that require repeatable surface finishes on steel workpieces.

Key Features

• Aluminum oxide abrasive — semi-friable grain for balanced cut rate and wheel life on ferrous materials
• Vitrified bond provides rigidity and consistent form-holding during surface grinding passes
• 46 grit coarse grade delivers aggressive stock removal suited to rough grinding operations
• J hardness (medium wheel hardness rating) helps maintain wheel integrity on softer workpiece materials
• Non-porous, non-tapered, no-recess Type 1 straight wheel geometry for standard surface grinder spindle mounting
• Rated to 3600 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for material applications including soft carbon steels, tool steels, and super alloys. Compatible with 1.25-inch arbor spindles.

Installation Notes

Grinding wheels must be installed by qualified personnel following ANSI B7.1 safety standards and the grinder manufacturer's mounting instructions. Before mounting, inspect the wheel for cracks or chips using the ring test — do not mount a damaged wheel. Ensure the machine is fully de-energized and locked out before changing wheels, and confirm the spindle RPM rating does not exceed the wheel's 3600 RPM maximum. Flanges, blotters, and arbor hardware must be clean, properly matched to wheel size, and torqued according to the grinder manufacturer's specifications.