Norton 66253044636 Surface Grinding Wheel 46 Grit 8 in

Product Description

The NORTON 66253044636 is a Type 1 surface grinding wheel engineered for precision stock removal on ferrous metals and high-performance alloys. Built around a white aluminum oxide abrasive and a vitrified bond, this wheel carries a coarse 46-grit rating with an I hardness code, placing it in the medium-hardness category. It measures 8 inches in diameter, 1 inch thick, with a 1-1/4 inch arbor hole, and is rated to a maximum of 3,105 RPM. The semi-friable abrasive structure promotes consistent self-sharpening during the cut, reducing glazing on demanding materials. Licensed grinding machine operators and tool-and-die technicians are the primary installers.

This wheel is suited for surface grinding operations on soft carbon steels, tool steels, and super alloys in both production and toolroom environments. It is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The vitrified bond and non-porous wheel structure deliver stable form-holding under coolant flood conditions, making it a reliable choice for flat-surface finishing and light-profile grinding where dimensional accuracy is critical.

Key Features

• White aluminum oxide abrasive for clean cutting on steels and super alloys
• Vitrified bond provides rigid form retention and coolant compatibility
• 46 grit coarse grade for efficient stock removal
• Semi-friable structure supports self-sharpening action and reduces glazing
• Non-porous, non-tapered Type 1 flat wheel with no recess
• Rated to 3,105 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for material applications including soft carbon steels, tool steels, and super alloys. Series designation is 38A Type 1 with specification code 38A46-IVBE.

Installation Notes

Installation should be performed by a qualified grinding machine operator following ANSI B7.1 safe-use guidelines for abrasive wheels. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the 3,105 RPM maximum speed rating marked on the wheel or its blotter. Flanges, bushings, and the machine spindle should be clean and properly fitted before tightening.