Norton 66253364320 Surface Grinding Wheel 14in 46 Grit

Product Description

The NORTON 66253364320 is a Type 1 surface grinding wheel engineered for high-performance stock removal on ferrous and specialty metals. Built around a ceramic abrasive grain with a vitrified bond, this wheel delivers consistent cut rates and thermal stability across extended grinding cycles. It 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, G-hardness (coarse grade, soft wheel rating) combination suits aggressive material removal while the porous structure promotes coolant flow and chip clearance. Rated at a maximum of 1800 RPM, it is installed by machinist tradespeople and grinding-shop technicians on precision grinding equipment.

This wheel is suited for surface grinding, cylindrical grinding, and CNC cutting tool machine applications in both production shop and job-shop environments. It is specifically designed for use on 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The semi-friable ceramic grain continuously self-sharpens during cutting, making it a reliable choice for harder, heat-sensitive alloys where wheel loading and workpiece burn are concerns.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent stock removal and long wheel life
• 46 grit, G hardness coarse grade for aggressive material removal on hard ferrous metals and alloys
• Porous wheel structure promotes coolant penetration and reduces heat buildup at the workpiece
• Semi-friable grain continuously fractures to expose fresh cutting edges during grinding
• 14-inch diameter with 5-inch arbor hole fits standard surface grinder and cylindrical grinder spindles
• Compatible with a broad range of workpiece materials including titanium, tool steels, and super alloys

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for 400 Series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron workpieces. Series designation is 5SG Type 1.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment 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 never exceed the 1800 RPM maximum rated speed. Proper wheel flanges and blotters must be used per ANSI B7.1 standards for type 1 straight wheels. Allow the wheel to run at operating speed for at least one minute behind a guard before bringing it into contact with the workpiece.