Norton 66252942815 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66252942815 is a Type 5 surface grinding wheel engineered for precision stock removal on soft carbon steels, tool steels, and super alloys. It measures 7 inches in diameter and 1 inch thick with a 1-1/4 inch arbor hole, making it a standard fit for bench-mounted and pedestal-style surface grinders. The abrasive is white aluminum oxide with a vitrified bond, rated at a medium grade with an I hardness code. Maximum operating speed is 3,600 RPM. The semi-friable aluminum oxide grain continuously self-sharpens under load, maintaining a consistent cut rate across the wheel's service life. Machinists, tool-and-die makers, and grinding specialists are the primary installers.

This wheel is designed for use on cylindrical grinders and surface grinders in job shop, production, and maintenance-repair environments. It is particularly well-suited for finish and semi-finish grinding of soft carbon steels, tool steels, and super alloys where controlled stock removal and surface finish consistency are required. The Type 5 recessed profile, with a 3 inch recess diameter and 1/2 inch recess depth on one side, provides flange clearance in applications where wheel-to-spindle interference is a concern. The white wheel color provides easy visual inspection for loading or glazing between dresses.

Key Features

• White aluminum oxide abrasive — semi-friable grain promotes self-sharpening under load
• Vitrified bond for rigid, precise cutting action and easy redressing with a diamond dresser
• Type 5 recessed profile with 3 inch recess diameter and 1/2 inch recess depth for flange clearance
• 60 grit, I hardness (medium grade) — suited for general-purpose stock removal on a range of ferrous materials
• 3,600 RPM maximum speed rating
• Series 38A Type 5 specification: 38A60-IVBE

Compatibility

Rated for use with cylindrical grinders and surface grinders. Fits standard 1-1/4 inch arbor spindles. Suitable for grinding soft carbon steels, tool steels, and super alloys as specified by the manufacturer.

Installation Notes

Grinding wheels must be installed and dressed by a qualified machinist or grinding specialist following ANSI B11.9 safety standards for grinding machines. Before mounting, perform a ring test to check for cracks, and confirm the machine spindle speed does not exceed the wheel's 3,600 RPM maximum. Never exceed the rated RPM. Use the correct flanges and blotters, and allow the wheel to run at operating speed in a guarded area for at least one minute before bringing it into contact with the workpiece.