Norton 66253019353 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253019353 is a Type 1 surface grinding wheel designed for precision stock removal on ferrous metals and hard alloys. Built on an aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent cut rates and predictable wear characteristics across extended grinding cycles. It measures 8 inches in diameter, 1/2 inch thick, and carries a 1-1/4 inch arbor hole. The 46-grit, G-hardness (coarse grade) specification targets aggressive material removal rather than finish grinding. Rated to 3,600 RPM, it suits production surface grinder setups where controlled cut depth and wheel integrity under load are priorities. The pink aluminum oxide grain is semi-friable, meaning it fractures progressively to expose fresh cutting edges without excessive wheel breakdown.

This wheel is suited for wet grinding operations on soft carbon steels, tool steels, and super alloys. Typical install scenarios include toolroom surface grinders, cylindrical grinders, and CNC cutting tool machines in both job shop and production environments. The porous, vitrified structure promotes coolant flow through the wheel face, reducing heat buildup at the workpiece during prolonged passes. It carries the specification designation 25A46-GVP2, placing it in the NORTON 25A Type 1 series.

Key Features

• Aluminum oxide abrasive, semi-friable grain for self-dressing cutting action
• Vitrified bond with open, porous structure supports wet grinding and coolant penetration
• 46 grit, coarse grade for aggressive stock removal on steel and super alloys
• G hardness rating provides a soft wheel feel, releasing dull grain before glazing occurs
• Type 1 flat wheel profile with no recess, compatible with standard surface grinder arbors
• Rated 3,600 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Intended material applications include soft carbon steels, tool steels, and super alloys. Fits standard 1-1/4 inch arbors on Type 1 wheel-compatible machines.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified machine operator or toolroom technician following ANSI B11.9 and OSHA 29 CFR 1910.215 guidelines. Before mounting, ring-test the wheel for cracks and verify the machine spindle speed does not exceed the 3,600 RPM rating stamped on the wheel. Power down and lock out the grinder before changing wheels. Use proper flanges and blotters sized to the wheel; never force the wheel onto an arbor or overtighten the arbor nut.