Norton 66253364365 Type 5 Surface Grinding Wheel 60 Grit

Product Description

The NORTON 66253364365 is a Type 5 recessed surface grinding wheel built for heavy-duty material removal on ferrous and non-ferrous metals. It measures 14 inches in diameter, 1.5 inches thick, with a 5-inch arbor hole and an 8-inch recess diameter on one side to a depth of 0.5 inches. The abrasive matrix is aluminum oxide bonded in a vitrified bond, rated at 60 grit with K hardness (medium grade), and carries a maximum operating speed of 1,800 RPM. The 32A specification series indicates a friable-free, porous structure suited for consistent stock removal and cooler grinding action. Licensed machinists, tool-and-die technicians, and grinding machine operators are the typical end users for this wheel.

This wheel is designed for use on surface grinders and cylindrical grinders in production and job-shop 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. The Type 5 recessed geometry provides clearance for flange mounting, making it well suited for cup-style spindle setups where wheel-to-workpiece clearance is critical. Applications range from surface finishing passes to aggressive roughing cuts depending on feed and dress intervals.

Key Features

• Type 5 single-side recessed profile: 8-inch recess diameter, 0.5-inch recess depth for flange clearance
• Aluminum oxide abrasive in vitrified bond for rigid, consistent cut geometry
• 60 grit, K hardness (medium) for balanced stock removal and surface finish
• Porous wheel structure promotes chip clearance and reduces heat buildup at the workpiece
• Rated to 1,800 RPM maximum operating speed
• Compatible with a wide range of metals including stainless, carbon steel, tool steel, aluminum, and cast iron

Compatibility

Rated for use with surface grinders and cylindrical grinders. Compatible workpiece materials include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Installation should be performed by a qualified machine operator or grinding technician following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before mounting or removing the wheel. Inspect the wheel for cracks or chips before every use and perform a ring test; never mount a damaged wheel. Do not exceed the 1,800 RPM maximum operating speed marked on the wheel, and ensure the machine spindle speed is confirmed before startup.