Norton 66252940199 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252940199 is a Type 1 flat surface grinding wheel engineered for demanding material removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and vitrified bond, it operates at a maximum of 3600 RPM and delivers consistent stock removal across a wide range of hard-to-grind workpiece materials. At 7 inches in diameter and 0.5 inches thick with a 1.25-inch arbor hole, this wheel mounts directly to standard surface grinder spindles. The 60 grit and L hardness rating place it in the medium range, balancing cut rate with wheel life. It carries a 5SG60-LVS specification designation and is semi-friable, meaning the grain fractures progressively to expose fresh cutting edges during use.

This wheel is suited for surface grinding, cylindrical grinding, and CNC cutting tool machine applications in production and tool-room environments. It performs on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The blue vitrified bond and porous structure promote coolant flow and chip clearance, making it a practical choice for both wet and appropriate dry grinding setups where heat control on difficult alloys is a priority.

Key Features

• Ceramic abrasive grain with vitrified bond for aggressive, consistent material removal
• 60 grit, L hardness (medium grade) for balanced cut rate and wheel longevity
• Semi-friable grain structure continuously exposes fresh cutting edges
• Porous wheel construction promotes coolant penetration and chip clearance
• Rated to 3600 RPM maximum operating speed
• Type 1 flat wheel profile with no recess and no taper — fits standard surface grinder spindles

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machine operator or grinding specialist following the wheel manufacturer and machine manufacturer guidelines. Always power down and lock out the grinder before mounting or changing wheels. Inspect the wheel for cracks or chips before installation and perform a ring test per ANSI B11.9 or equivalent standard. Never exceed the 3600 RPM maximum speed rating marked on the wheel.