Norton 66252940524 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252940524 is a Type 1 surface grinding wheel built for aggressive stock removal on hard ferrous metals and exotic alloys. It measures 7 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole. The wheel is constructed from ceramic abrasive grain bonded in a vitrified matrix, producing a semi-friable structure that continuously self-sharpens during cut. Hardness code G places it in the soft-to-medium range, which promotes free cutting action and reduces heat buildup at the workpiece surface. Maximum rated speed is 3,600 RPM. The blue wheel color is consistent with the 5SG series designation.

This wheel is suited for precision surface grinding operations in industrial and machine shop environments. It performs on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Compatible grinding machines include surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous structure aids coolant flow and chip clearance, making it a practical choice for both wet and dry grinding setups where thermal management matters.

Key Features

• Ceramic abrasive grain with semi-friable structure for continuous self-sharpening
• Vitrified bond provides rigidity and precise form-holding during surface grinding
• 60 grit, medium grade for balanced material removal and surface finish
• Soft hardness code G reduces glazing and heat on difficult-to-grind alloys
• Porous wheel construction supports coolant penetration and chip evacuation
• No recess, no taper — standard flat Type 1 profile fits most surface grinder spindles

Compatibility

Designed 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. Series designation is 5SG Type 1 per the supplier specification 5SG60-GVSP.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machine operator or toolroom professional following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test on vitrified wheels. Power down and lock out the grinder before changing wheels. Never exceed the 3,600 RPM maximum speed rating stamped or labeled on the wheel.