Norton 66252940202 Surface Grinding Wheel 80 Grit 7in

Product Description

The NORTON 66252940202 is a Type 1 surface grinding wheel engineered for high-performance material removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and vitrified bond, this wheel delivers consistent stock removal and longer wheel life compared to conventional aluminum oxide wheels. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. Rated at a maximum of 3600 RPM, it operates at medium hardness (Grade K) and carries the 5SG80-KVS specification. The semi-friable ceramic grain continuously fractures to expose fresh cutting edges, reducing heat buildup during grinding operations.

This wheel is suited for precision surface grinding applications in production and maintenance environments. It performs on demanding materials including 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Compatible machine types include surface grinders, cylindrical grinders, and CNC cutting tool machines. Its blue vitrified bond construction makes it a standard choice for shops working exotic alloys and high-alloy steels where thermal damage to the workpiece must be minimized.

Key Features

• Ceramic abrasive grain with semi-friable structure for continuous self-sharpening action
• Vitrified bond provides rigidity and consistent form-holding under precision grinding loads
• Medium hardness (Grade K) balances wheel wear rate with cutting efficiency
• 80 grit delivers an effective balance of stock removal and surface finish
• Porous wheel structure promotes coolant flow and chip clearance
• No recess, no taper — straight Type 1 profile for standard surface and cylindrical grinder spindles

Compatibility

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

Installation Notes

Grinding wheel installation must be performed by a qualified operator following ANSI B11.9 and OSHA 29 CFR 1910.215 standards for abrasive wheel machinery. Before mounting, inspect the wheel for cracks or chips using the ring test; never mount a damaged wheel. Power down and lock out the grinder before changing wheels. Verify that the machine spindle speed does not exceed the 3600 RPM maximum rating stamped on the wheel, and use properly sized flanges and a compressible blotter on each side of the wheel.