Norton 66253364090 Surface Grinding Wheel 14in 46 Grit

Product Description

The NORTON 66253364090 is a Type 1 surface grinding wheel engineered for precision stock removal on a range of metallic workpieces. Built around an aluminum oxide abrasive with a vitrified bond, this wheel measures 14 inches in diameter, 1-1/2 inches thick, and carries a 5-inch arbor hole to fit standard surface and cylindrical grinder spindles. The 46-grit, coarse-grade construction paired with an I hardness code delivers aggressive material removal while maintaining enough wheel integrity for controlled, repeatable surface finishes. Rated at a maximum of 1800 RPM, it is sized for heavy-duty production grinding applications. Wheel color is white and the abrasive is semi-friable, supporting consistent self-dressing behavior during use.

This wheel is suited for surface grinding, cylindrical grinding, and use on CNC cutting tool machines. Typical applications include soft carbon steels, tool steels, and super alloys. The non-porous, non-tapered, non-recessed Type 1 flat profile makes it straightforward to mount and dress on production grinding equipment. The specification code 38A46-IVBE identifies the exact abrasive blend and bond formulation, which is useful when cross-referencing to plant grinding specs or replacement records. Wheel weight is approximately 17.19 pounds, so proper handling equipment is recommended during mounting.

Key Features

• Aluminum oxide abrasive, semi-friable — supports consistent self-sharpening during grinding passes
• Vitrified bond construction for rigidity and thermal stability at operating speeds
• 46 grit, coarse grade — suitable for high-stock-removal operations on steel and super alloys
• I hardness code (medium) balances wheel wear rate against workpiece finish requirements
• Type 1 flat wheel, no recess, no taper — fits standard surface and cylindrical grinder arbors with a 5-inch hole
• Maximum rated speed of 1800 RPM — verify machine RPM before mounting

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. The 5-inch arbor hole and Type 1 profile must match the spindle and flanges of the host machine before installation.

Installation Notes

Grinding wheel installation should be performed by a qualified machine operator or maintenance professional following ANSI B11.9 and OSHA 29 CFR 1910.215 standards. Always ring-test the wheel for cracks before mounting and never exceed the rated maximum RPM of 1800. Power down and lock out the grinder before removing or installing any wheel. Use proper blotters and flanges matched to the wheel diameter and arbor size, and dress the wheel with an appropriate dressing tool before the first grinding pass.