Norton 66253262532 Surface Grinding Wheel 80 Grit 12 in

Product Description

The NORTON 66253262532 is a Type 1 surface grinding wheel engineered for precision flat-surface and cylindrical grinding operations. Built on an aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent stock removal and a controlled cut on a broad range of ferrous and non-ferrous materials. It measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole, and is rated to a maximum of 2070 RPM. The 80-grit, K-hardness (medium grade) specification makes it well suited for moderate material removal where surface finish and dimensional accuracy both matter. Licensed grinding technicians and machinists install this wheel on production and toolroom surface grinders.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Typical applications include tool and die work, production grinding of flat stock, and reconditioning of machined components. The 32A specification series denotes Norton's aluminum oxide grain blend, making this wheel a standard choice for shops working 400 series stainless, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It carries no recess and is not tapered, fitting standard straight-wheel mounting configurations.

Key Features

• Aluminum oxide abrasive grain for reliable cut rate on steels and cast irons
• Vitrified bond provides rigidity and resistance to heat distortion during grinding passes
• 80 grit, K hardness (medium grade) balances stock removal with surface finish quality
• Porous wheel structure promotes coolant flow and reduces heat buildup at the workpiece
• Type 1 straight-wheel profile with no recess and no taper for straightforward mounting
• Rated at 2070 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Fits spindles requiring a 3-inch arbor hole and accommodating a 12-inch diameter, 1-inch-thick straight wheel.

Installation Notes

Installation should be performed by a qualified machinist or grinding technician with the machine fully de-energized and locked out per applicable LOTO procedures before wheel changes. Inspect the wheel for cracks or chips using a ring test before mounting. Never exceed the maximum rated speed of 2070 RPM, and always confirm the machine spindle speed does not exceed the wheel rating. Dress the wheel with an appropriate diamond dresser before the first grinding pass to true the face and expose fresh abrasive grain.