Norton 66253043432 Surface Grinding Wheel 8 in 60 Grit

Product Description

The NORTON 66253043432 is a Type 1 surface grinding wheel designed for precision stock removal and surface finishing on metallic workpieces. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent cut rates and shape retention throughout its service life. It measures 8 inches in diameter, 1/4 inch thick, with a 1-1/4 inch arbor hole, and is rated to a maximum of 3600 RPM. The J hardness code and 60 grit place it in the medium-grade range, making it well suited for controlled material removal without excessive heat buildup. Machinists and grinding technicians are the primary installers and users of this wheel.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It performs well on soft carbon steels, tool steels, and super alloys where a medium-hardness, medium-grit wheel is the appropriate specification. The semi-friable aluminum oxide grain self-sharpens during use, maintaining cut efficiency across a range of metalworking applications. It is suited to both production-floor and toolroom environments where consistent surface finishes are required.

Key Features

• Aluminum oxide abrasive grain rated semi-friable for controlled self-sharpening
• Vitrified bond provides rigidity and shape retention during precision grinding
• 60 grit, J hardness (medium grade) balances stock removal with surface finish quality
• Non-porous, non-tapered, no-recess Type 1 configuration for standard straight-wheel mounting
• 3600 RPM maximum operating speed
• Series designation 38A60-JVBE for specification-matched sourcing and replacement

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Verify arbor hole size, maximum RPM rating of the machine spindle, and wheel guard clearance before mounting.

Installation Notes

Grinding wheel installation must be performed by a qualified machinist or grinding technician following ANSI B11.9 and applicable shop safety standards. Always power down and lock out the grinder before mounting or removing a wheel. Perform a ring test before installation and run the wheel at operating speed behind a guard for a minimum break-in period before presenting it to the workpiece. Never exceed the 3600 RPM maximum speed marked on the wheel.