Norton 66252940111 Surface Grinding Wheel 120 Grit

Product Description

The NORTON 66252940111 is a Type 1 surface grinding wheel engineered for precision stock removal and finishing on a range of non-ferrous and hard metals. Built with a silicon carbide abrasive and a vitrified bond, this wheel delivers consistent cutting action and thermal stability under load. It measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. Rated to 3600 RPM maximum, it carries an I hardness code and is classified as a fine grade wheel. The 39C series specification indicates a medium-hardness, non-porous structure suited for controlled material removal on demanding workpiece materials.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both shop and production environments. It performs on 300 series stainless steel, titanium, aluminum, brass, bronze, copper, gray iron, masonry, and natural stone. The green silicon carbide composition makes it especially effective on hard, brittle, and low-tensile-strength materials where aluminum oxide wheels would load or glaze. It fits applications where surface finish quality and wheel longevity are both priorities.

Key Features

• Silicon carbide abrasive grain for effective cutting on hard and brittle materials
• Vitrified bond provides rigidity, heat resistance, and consistent wheel breakdown
• 120 grit fine grade for controlled stock removal and quality surface finishes
• Non-porous, non-tapered Type 1 flat wheel profile with no recess
• Green wheel color consistent with 39C silicon carbide series identification
• 3600 RPM maximum speed rating for safe operation on compatible machines

Compatibility

Compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines accepting a 7 inch diameter, 1/4 inch wide Type 1 wheel with a 1-1/4 inch arbor hole. Rated for use on 300 series stainless steel, titanium, aluminum, brass, bronze, copper, gray iron, masonry, and natural stone workpieces.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or tool room technician following ANSI B11 and OSHA 29 CFR 1910.215 guarding requirements. Always inspect the wheel for cracks or chips before mounting and perform a ring test per manufacturer guidelines. Power down and lock out the machine before changing wheels. Never exceed the 3600 RPM maximum speed rating stamped on the wheel.