Norton 66253043733 Surface Grinding Wheel 8in 80 Grit

Product Description

The NORTON 66253043733 is a Type 1 straight surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and thermal stability across a wide range of grinding applications. It measures 8 inches in diameter, 1/2 inch thick, and carries a 1-1/4 inch arbor hole. The 80-grit, medium-grade, H-hardness specification puts it in the moderate material-removal range — aggressive enough for surface grinding operations while still producing a reasonably smooth finish. Rated at 3,600 RPM maximum, it is suitable for use on powered surface and cylindrical grinding equipment. Licensed machinists, toolroom operators, and grinding technicians are the primary installers and users of this wheel.

This wheel is suited for surface grinding operations on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is rated for use on CNC cutting tool machines, cylindrical grinders, and surface grinders. The porous, vitrified structure promotes chip clearance and coolant flow, making it a practical choice for both wet and dry grinding setups in production and toolroom environments. The wheel carries the internal specification designation 32A80-HVBE, which identifies the abrasive type, grit, hardness, and bond system within the NORTON 32A series.

Key Features

• Aluminum oxide abrasive for reliable performance on steels, cast iron, and aluminum
• Vitrified bond with porous structure for efficient chip clearance and coolant retention
• 80-grit, medium-grade, H-hardness for moderate stock removal with acceptable surface finish
• Type 1 straight wheel geometry — no recess, no taper
• 3,600 RPM maximum operating speed
• Series designation 32A80-HVBE for direct specification cross-reference

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Compatible material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting must be performed by qualified personnel following ANSI B7.1 safety standards. Inspect the wheel for cracks or chips before mounting — never mount a damaged wheel. Power down and lock out the grinder before installing or removing the wheel, and always perform a ring test prior to use. Operate the wheel within its rated maximum RPM; exceeding the speed rating is a serious safety hazard.