Norton 66253363913 Surface Grinding Wheel 14in 46 Grit

Product Description

The NORTON 66253363913 is a Type 1 straight surface grinding wheel built for heavy-stock removal on ferrous and non-ferrous metals. It measures 14 inches in diameter, 1 inch thick, with a 5-inch arbor hole, and runs at a maximum of 1,800 RPM. The abrasive is aluminum oxide bonded in a vitrified matrix — a combination that delivers consistent cut rate and open wheel structure suited to wet or dry surface grinding applications. Hardness code H places this wheel in the soft range of the vitrified scale, which promotes free-cutting action and reduces heat buildup on hardened workpieces. The 32A46-HVBE specification identifies the full wheel composition for shop records and wheel-dressing references.

This wheel is rated for use on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is designed for CNC cutting tool machines, cylindrical grinders, and surface grinders in production and toolroom environments. The coarse 46-grit rating makes it best suited for aggressive material removal rather than finish grinding passes. Industrial maintenance shops, tool and die operations, and machine shops will find this wheel appropriate for routine surface and cylindrical grinding work on a wide range of base metals.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut rate and long wheel life
• 46 grit, coarse grade — optimized for rapid stock removal
• Hardness code H (soft rating) promotes free-cutting action and reduces thermal load on the workpiece
• Porous wheel structure supports coolant flow and chip clearance during wet grinding
• Rated for 1,800 RPM maximum operating speed
• No recess, no taper — standard Type 1 straight wheel geometry

Compatibility

Rated for use on CNC cutting tool machines, cylindrical grinders, and surface grinders. 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

Surface grinding wheels must be mounted and dressed by a qualified machine operator or maintenance professional following ANSI B11.22 and applicable shop safety procedures. Always inspect the wheel for cracks or chips before mounting — ring-test per ANSI B7.1 guidelines. Power down and lock out the grinder before changing wheels. Never exceed the maximum RPM marked on the wheel or the machine spindle speed rating, whichever is lower.