Norton 66252939463 Surface Grinding Wheel 7in 80 Grit

Product Description

The NORTON 66252939463 is a Type 1 surface grinding wheel engineered for aggressive stock removal on hard ferrous and exotic materials. Built with a ceramic abrasive grain and a vitrified bond, this wheel operates at a maximum of 3600 RPM and delivers consistent cut rate across a wide range of demanding applications. At 7 inches in diameter and 1/4 inch thick with a 1-1/4 inch arbor hole, the wheel fits standard surface grinder spindles used in production and tool-room environments. The J hardness code and medium grade classification indicate a moderately hard wheel that holds its form while still releasing dull grain effectively.

This wheel is rated for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is compatible with surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous, semi-friable ceramic structure suits operations where heat buildup is a concern and where consistent surface finish on difficult alloys is required. The 5SG Type 1 series designation identifies it within the Norton Quantum ceramic line used across precision grinding operations.

Key Features

• Ceramic abrasive grain with vitrified bond for high material removal rates and thermal resistance
• J hardness code and medium grade provide a balance of form retention and self-dressing action
• Porous, semi-friable structure reduces heat transfer to the workpiece during grinding
• Rated for stainless steels, tool steels, titanium, super alloys, and various cast irons
• Type 1 flat wheel profile with no recess, suitable for straight surface and cylindrical grinding
• Maximum operating speed of 3600 RPM

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Material applications include 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 machinist or grinding technician. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before installation and perform a ring test per ANSI B11.9 standards. Never exceed the maximum operating speed of 3600 RPM stamped on the wheel or listed by the machine manufacturer.