Norton 66252939543 Surface Grinding Wheel 7in 46 Grit

Product Description

The NORTON 66252939543 is a Type 1 surface grinding wheel engineered for precision stock removal on a range of ferrous and non-ferrous metals. Built on an aluminum oxide abrasive with a vitrified bond, it delivers consistent cut rates and thermal stability under continuous grinding conditions. The wheel measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. At 46 grit and H hardness (coarse grade, soft hardness rating), it is suited for aggressive material removal while maintaining surface integrity on workpieces that require controlled finishes. Maximum operating speed is 3,600 RPM.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It performs on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The porous structure of the bond promotes chip clearance and coolant retention, reducing heat buildup during extended grinding passes. It is a practical choice for tool rooms, maintenance shops, and production grinding applications handling a broad mix of materials.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut rate and wheel integrity
• 46 grit coarse grade with H hardness code for aggressive stock removal
• Porous wheel structure promotes chip clearance and reduces grinding heat
• Type 1 flat wheel profile with no recess, compatible with standard surface grinder arbors
• Rated to 3,600 RPM maximum operating speed
• Series 32A Type 1 construction per manufacturer specification 32A46-HVBE

Compatibility

Designed 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 and dressing should be performed by a qualified machinist or grinding machine operator following ANSI B11.9 safety standards and the machine manufacturer's guidelines. 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 rated maximum RPM of 3,600 for this wheel.