Norton 66253007161 Surface Grinding Wheel 46 Grit 8 in

Product Description

The NORTON 66253007161 is a Type 1 surface grinding wheel built for precision stock removal on ferrous metals. It measures 8 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The wheel uses aluminum oxide abrasive bonded in a vitrified matrix, rated at a coarse 46 grit with an H hardness code. The blue-colored 32A series wheel carries a maximum operating speed of 3,105 RPM. Vitrified bond construction provides rigidity and consistent cut geometry, making it a reliable choice for surface grinder work in production and job-shop environments. Installation and operation should only be performed by qualified grinding machine operators familiar with abrasive wheel safety standards.

This wheel is suited for flat surface grinding operations on hard carbon steels, soft carbon steels, and tool steels. The coarse 46 grit cuts aggressively for rapid material removal while the H hardness rating keeps the wheel from loading prematurely on softer grades of steel. It mounts on surface grinders, cylindrical grinders, and CNC cutting tool machines equipped with the appropriate 1-1/4 inch arbor. The Type 1 straight-wheel profile fits standard horizontal and vertical spindle surface grinder setups commonly found in tool rooms and machining shops.

Key Features

• 46 grit coarse aluminum oxide abrasive for aggressive stock removal
• Vitrified bond for rigid, consistent cutting action and easy dressing
• H hardness code with porous structure reduces heat buildup and wheel loading
• Type 1 straight-wheel profile with no recess and no taper for broad spindle compatibility
• Rated to 3,105 RPM maximum operating speed
• Suitable for hard carbon steels, soft carbon steels, and tool steels

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines equipped with a 1-1/4 inch arbor. Recommended material applications include hard carbon steels, soft carbon steels, and tool steels per manufacturer specifications.

Installation Notes

Abrasive wheel mounting must be performed by a qualified operator following ANSI B11.9 and OSHA 29 CFR 1910.215 abrasive wheel machinery standards. Always ring-test the wheel for cracks before mounting and never exceed the rated maximum RPM of 3,105. Ensure the machine spindle is fully de-energized and locked out before changing wheels. Use proper flanges and blotters as specified for the wheel diameter and arbor size; do not overtighten the arbor nut.