Norton 66253262596 Surface Grinding Wheel 12in 60 Grit

Product Description

The NORTON 66253262596 is a Type 1 surface grinding wheel engineered for demanding material removal on hard ferrous metals and specialty alloys. Built around Norton's 5SG ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long service life on surface grinders and cylindrical grinders. At 12 inches in diameter, 1-1/2 inches thick, with a 5-inch arbor hole, it is sized for production-grade surface grinding equipment. The 60-grit, G-hardness (medium, soft-to-medium wheel hardness code) specification balances stock removal with a controlled surface finish. Maximum operating speed is rated at 2,070 RPM. The wheel weighs 11.96 pounds and is blue in color, consistent with Norton's 5SG product series.

This wheel is suited for shop-floor and production grinding applications involving hard-to-grind materials. Rated material applications include 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is designed for use on CNC cutting tool machines, cylindrical grinders, and surface grinders. The porous, semi-friable ceramic grain structure helps dissipate heat during aggressive grinding passes, making it a practical choice when workpiece burn on heat-sensitive alloys is a concern. Machinists, tool-and-die workers, and precision grinding technicians are the primary installers and operators.

Key Features

• 5SG ceramic abrasive grain provides consistent cut rate and extended wheel life on hard ferrous and exotic alloys
• Vitrified bond with porous structure aids coolant retention and heat dissipation during grinding
• 60-grit, G-hardness (medium grade) balances aggressive stock removal with acceptable surface finish
• Type 1 flat wheel profile with no recess, compatible with standard surface grinder and cylindrical grinder spindles
• Rated for 400 series stainless, tool steels, titanium, super alloys, cast iron, and ductile iron
• Maximum operating speed of 2,070 RPM matches production surface grinder specifications

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines accepting a 12-inch diameter, 5-inch arbor hole, Type 1 grinding wheel. Rated material applications include 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Norton series designation is 5SG Type 1.

Installation Notes

Wheel mounting and dressing should be performed by a qualified machinist or grinding technician 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; do not install a damaged wheel. Always ensure the machine spindle speed does not exceed the wheel's 2,070 RPM maximum operating speed, and confirm arbor flange and blotter sizes are appropriate for the 5-inch hole diameter. Dress the wheel with a suitable dressing tool before the first grind pass to true the face.