Norton 66253363921 Surface Grinding Wheel 14in 46 Grit

Product Description

The NORTON 66253363921 is a Type 1 straight surface grinding wheel built for demanding material removal on ferrous and non-ferrous metals. The wheel measures 14 inches in diameter, 1 inch thick, with a 5-inch arbor hole, and weighs 11.46 pounds. It is constructed from aluminum oxide abrasive bonded with a vitrified bond, producing a porous, open structure that promotes cool cutting and efficient swarf clearance. Rated at a maximum of 1800 RPM, the 46-grit coarse grade delivers aggressive stock removal. The K hardness rating places it in the medium hardness range, balancing wheel wear against cutting efficiency. Licensed grinding machine operators and tool-and-die shops install this wheel on production surface grinders and CNC cutting tool machines.

This wheel is suited for surface grinding applications across a wide range of materials including 400 Series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The 32A series specification (32A46-KVBE) identifies this as a general-purpose aluminum oxide formulation commonly selected for flat surface stock removal on horizontal-spindle surface grinders. It fits production shop environments where consistent, repeatable material removal rates are required across both ferrous and non-ferrous workpieces.

Key Features

• Aluminum oxide abrasive with vitrified bond for rigid, consistent cut performance
• Porous wheel structure promotes heat dissipation and swarf clearance during grinding
• 46-grit coarse grade for aggressive stock removal applications
• K hardness (medium) balances wheel longevity with cutting efficiency
• Type 1 straight wheel geometry fits standard surface grinder spindle configurations
• Series specification 32A46-KVBE for precise cross-reference and replacement ordering

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Compatible with 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 mounting must be performed by a qualified operator following ANSI B11.9 and OSHA 1910.215 standards for abrasive wheel machinery. Always ring-test the wheel before mounting and inspect for cracks or damage. Power down and lock out the grinder before changing wheels, and confirm the machine spindle RPM does not exceed the wheel maximum of 1800 RPM. Use proper blotter flanges and never force the wheel onto the arbor.