Norton 66253246893 Surface Grinding Wheel 12in Type 7

Product Description

The NORTON 66253246893 is a Type 7 recessed surface grinding wheel engineered for precision stock removal on ferrous and non-ferrous metals. It measures 12 inches in diameter and 2 inches thick with a 3-inch arbor hole, and it uses an aluminum oxide abrasive bonded in a vitrified matrix. Rated at 2,705 RPM maximum and classified at 60 grit with a J hardness code (medium grade), this wheel delivers consistent cut rates on hard and soft carbon steels, tool steels, stainless, cast iron, and aluminum. It is sized and rated for professional use on surface grinders and cylindrical grinders in production and job-shop environments.

This wheel fits surface grinder and cylindrical grinder applications where a medium-grade, medium-grit wheel is required for material removal or semi-finish passes. Suitable material applications include 400 Series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The two-sided recess design — with a recess depth of 0.5 inches and recess diameter of 6.5 inches — clears the spindle flange on compatible machine setups. Wet operation is supported, making it appropriate for production grinding with coolant.

Key Features

• Type 7 two-sided recessed profile with 6.5-inch recess diameter and 0.5-inch recess depth for spindle clearance
• Aluminum oxide abrasive with vitrified bond for consistent material removal and durable wheel life
• 60 grit, J hardness (medium grade) — suited for semi-finish and roughing passes
• Rated for wet operation; compatible with water-soluble and oil-based coolants
• 2,705 RPM maximum speed rating; non-porous construction
• Series 32A Type 7 specification code: 60J8V32A

Compatibility

Designed for use with surface grinders and cylindrical grinders. Compatible material applications include 400 Series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel installation and dressing should be performed by a qualified machine operator or toolroom technician familiar with ANSI B11.9 safety standards for grinding machines. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before every use — never mount a damaged wheel. Verify that the machine spindle speed does not exceed the 2,705 RPM maximum rating marked on this wheel, and use proper flanges and a blotter gasket on each side per OSHA and ANSI mounting requirements.