Norton 66252939696 Surface Grinding Wheel 7in 60 Grit

Product Description

The NORTON 66252939696 is a Type 1 surface grinding wheel built for precision stock removal on soft carbon steels, tool steels, and super alloys. It measures 7 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole. The abrasive is white aluminum oxide bonded in a vitrified matrix, rated at medium grade (hardness code I) with a semi-friable structure. This combination delivers consistent cut rates with moderate wheel breakdown, keeping the surface sharp during extended grinding cycles. The wheel is rated to 3600 RPM and carries the 38A60-IVBE specification designation. It is intended for installation by machinists and tool-room technicians on production surface grinders and cylindrical grinders.

This wheel is suited for surface grinding operations in both job-shop and production environments. Typical applications include finish and semi-finish grinding of tool steel workpieces, resharpening of carbide-backed tooling blanks, and light stock removal on super alloy components. Compatible equipment includes CNC cutting tool machines, cylindrical grinders, and surface grinders. The non-porous, non-tapered, non-recessed Type 1 flat profile makes it straightforward to mount on standard machine spindles without additional dressing fixtures for initial fit-up.

Key Features

• White aluminum oxide abrasive for consistent cut on ferrous and super alloy materials
• Vitrified bond provides rigidity and porosity control for cool, accurate grinding
• Medium grade (hardness code I), semi-friable structure balances wheel life with sharpness
• 60 grit for moderate material removal with acceptable surface finish
• Type 1 flat wheel profile with no recess and no taper — mounts directly on standard arbors
• 3600 RPM maximum operating speed rating

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Material applications include soft carbon steels, tool steels, and super alloys as specified by the manufacturer.

Installation Notes

Grinding wheel installation and dressing must be performed by qualified personnel following ANSI B11.9 and applicable machine guarding requirements. Always inspect the wheel for cracks or chips with a ring test before mounting and never exceed the rated maximum RPM. Power down and lock out the machine completely before removing or installing a wheel. Ensure flanges, blotters, and the arbor nut are clean and properly sized for a 1-1/4 inch bore before tightening.