Norton 66253043762 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253043762 is a Type 1 surface grinding wheel designed for precision stock removal on metalworking machinery. Manufactured from white aluminum oxide abrasive with a vitrified bond, this wheel measures 8 inches in diameter, 0.5 inches thick, and carries a 1.25-inch arbor hole. The 46-grit, coarse-grade construction delivers aggressive material removal while the K hardness code and semi-friable grain structure help the wheel break down at a controlled rate, maintaining a sharp cutting face through the cut. Rated to a maximum of 3,600 RPM, it is sized and balanced for surface grinders, cylindrical grinders, and CNC cutting tool machines in professional machine shop and toolroom environments.

This wheel is suited for grinding soft carbon steels, tool steels, and super alloys where consistent surface finish and dimensional accuracy are required. The vitrified bond provides rigidity and porosity control appropriate for wet or dry precision grinding operations. It is a non-porous, non-tapered, flat-face wheel with no recess, making it a straightforward replacement or new setup option for operators running standard surface or cylindrical grinding cycles. The 38A series specification code for this wheel is 38A46-KVBE.

Key Features

• White aluminum oxide abrasive for controlled, consistent cutting action on ferrous metals
• Vitrified bond provides rigidity and thermal stability during precision grinding passes
• 46 grit, coarse grade for efficient stock removal on soft carbon steels, tool steels, and super alloys
• K hardness (medium) with semi-friable grain allows controlled breakdown and self-sharpening behavior
• Type 1 flat wheel with no recess and no taper for direct mounting on standard arbors
• Maximum operating speed of 3,600 RPM — do not exceed this rating

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Compatible with machines accepting a Type 1 wheel with an 8-inch diameter, 0.5-inch face width, and 1.25-inch arbor hole. Suitable for material applications including soft carbon steels, tool steels, and super alloys per the 38A46-KVBE specification.

Installation Notes

Installation should be performed by a qualified machinist or grinding machine operator with the machine fully de-energized and locked out before mounting. Inspect the wheel for cracks or chips using the ring test before installation, and verify that the machine spindle speed does not exceed the 3,600 RPM maximum rating stamped on the wheel. Blotters and proper flange hardware should be used as required by ANSI B11.9 grinding safety standards. Always dress the wheel before the first grinding pass to true the face and expose fresh abrasive.