Norton 66252939552 Surface Grinding Wheel 60 Grit 7in

Product Description

The NORTON 66252939552 is a Type 1 straight surface grinding wheel engineered for precision stock removal on a wide range of ferrous and non-ferrous metals. It measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. The wheel is constructed with aluminum oxide abrasive grain bonded in a vitrified bond matrix, graded Medium with a K hardness code. It carries a maximum operating speed of 3,600 RPM. The 32A specification series designates this as a general-purpose aluminum oxide wheel suited to production and tool-room grinding. Installation and dressing are performed by qualified grinding machine operators following applicable ANSI B11.9 and OSHA grinding wheel safety standards.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Typical applications include flat surface finishing and precision material removal on 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The 60-grit medium grade balances stock removal rate with surface finish quality, making it a practical choice for both roughing and light finishing passes in shop environments.

Key Features

• Aluminum oxide abrasive grain for broad metal compatibility including stainless, carbon steels, and cast iron
• Vitrified bond construction provides rigidity, porosity for coolant flow, and consistent wheel breakdown during use
• Type 1 straight wheel profile fits standard surface and cylindrical grinder arbors
• 60 grit medium grade balances aggressive stock removal with acceptable surface finish
• K hardness code indicates medium-hard wheel structure suited to softer workpiece materials
• Porous structure supports chip clearance and reduces heat buildup at the grinding interface

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a 7 inch diameter Type 1 straight wheel with a 1-1/4 inch arbor hole. Suitable for material applications including 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting must be performed by a qualified operator following ANSI B7.1 safe use of abrasive wheels standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and ensure the machine is de-energized and locked out before changing wheels. Flanges, blotters, and arbor hardware must be the correct size and in good condition. Never exceed the 3,600 RPM maximum operating speed marked on this wheel.