Norton 66253262513 Surface Grinding Wheel 12in 60G

Product Description

The NORTON 66253262513 is a Type 1 surface grinding wheel engineered for aggressive stock removal on hard and difficult-to-grind materials. Constructed with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long service life across demanding production and toolroom applications. It measures 12 inches in diameter, 1 inch thick, with a 5-inch arbor hole, and carries a 60-grit, K-hardness (medium grade) specification. The semi-friable ceramic grain self-sharpens under load, reducing heat buildup at the workpiece. Rated at a maximum of 2070 RPM, this wheel is installed by machine operators and grinding specialists on surface grinders and cylindrical grinders in industrial and toolroom settings.

This wheel is suited for surface grinding of 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Its porous structure promotes coolant flow and chip clearance, making it effective in both wet and dry grinding setups. Compatible equipment includes CNC cutting tool machines, cylindrical grinders, and surface grinders. The 5SG Type 1 series designation identifies it as a flat, straight-sided wheel with no recess, which simplifies mounting on standard wheel flanges.

Key Features

• Ceramic abrasive grain for high stock removal on hard and abrasion-resistant materials
• Vitrified bond provides rigidity and maintains wheel form under load
• Porous structure improves coolant penetration and swarf evacuation
• 60-grit, K-hardness (medium grade) balances cut rate with surface finish
• No recess, no taper — Type 1 flat wheel for straightforward flange mounting
• Semi-friable grain continuously exposes fresh cutting edges during use

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.

Installation Notes

Mounting and dressing of grinding wheels must be performed by qualified personnel following ANSI B11.9 and OSHA 1910.215 standards. Inspect the wheel for cracks or chips using the ring test before mounting; never install a damaged wheel. Ensure the machine spindle speed does not exceed the 2070 RPM rating marked on the wheel. Power down and lock out the grinder before changing wheels, and true the wheel with an appropriate diamond dresser before the first cut on a new mount.