Norton 66252939216 Surface Grinding Wheel 7in 100 Grit

Product Description

The NORTON 66252939216 is a Type 1 vitrified aluminum oxide surface grinding wheel built for precision stock removal on ferrous and non-ferrous metals. It measures 7 inches in diameter by 1/8 inch thick with a 1-1/4 inch arbor hole, and carries a 100-grit fine grade at K hardness (medium hardness rating). The vitrified bond provides rigidity and free-cutting action, making it well suited for flat surface and cylindrical grinding applications where consistent finish quality is required. Rated to 3600 RPM maximum. This wheel is identified by the specification code 32A100-KVBE and weighs approximately 0.397 pounds.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both production and toolroom environments. It performs across a broad range of workpiece materials including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Its porous, vitrified structure supports coolant flow and chip clearance, which helps maintain part geometry during extended grinding passes on both hardened and softer alloy materials.

Key Features

• Type 1 straight wheel profile with no recess — compatible with standard surface and cylindrical grinder spindles
• 100-grit fine grade aluminum oxide abrasive for controlled material removal and refined surface finish
• K hardness (medium) vitrified bond balances wheel life against free-cutting performance
• Porous structure promotes coolant penetration and chip evacuation during wet or dry grinding
• Specification code 32A100-KVBE for direct cross-reference with OEM and MRO procurement systems
• Maximum operating speed of 3600 RPM — verify spindle speed before mounting

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron workpieces.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified personnel following ANSI B7.1 safety standards and the machine manufacturer's mounting instructions. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before installation and perform a ring test — do not mount a wheel that produces a dull or dead sound. Confirm that the machine spindle speed does not exceed the 3600 RPM maximum rating marked on this wheel.