Norton 66252942844 Surface Grinding Wheel 60 Grit Type 5

Product Description

The NORTON 66252942844 is a Type 5 surface grinding wheel engineered for precision stock removal on a wide range of ferrous and non-ferrous metals. It measures 7 inches in diameter, 1-1/2 inches thick, and carries a 1-1/4 inch arbor hole with a single-side recess of 3/4 inch depth and 2-3/4 inch recess diameter. The abrasive material is aluminum oxide — designated 32A — bonded with a vitrified matrix, which delivers consistent cut rate and thermal stability under grinding loads. Hardness code I places it in the medium grade range, appropriate for broad-contact surface work. The wheel is rated to a maximum of 3600 RPM and weighs 4.47 pounds. Licensed machinists, tool-and-die workers, and industrial maintenance mechanics are the primary installers and operators.

This wheel is suited for use on surface grinders and cylindrical grinders in both shop and industrial maintenance settings. The aluminum oxide abrasive and vitrified bond combination make it effective across a range of materials. Rated material applications include 400 Series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is a practical choice for production grinding environments where consistent wheel life and predictable breakdown are required.

Key Features

• Type 5 recessed wheel profile with a 3/4 inch recess depth and 2-3/4 inch recess diameter for clearance in surface grinder applications
• 32A aluminum oxide abrasive grain — friable-resistant construction for sustained cut rate
• Vitrified bond provides thermal stability and open structure for efficient swarf evacuation
• Medium hardness (Grade I) balances wheel life with consistent material removal
• Porous structure aids coolant penetration and reduces heat buildup at the workpiece
• Maximum operating speed of 3600 RPM — compatible with standard surface and cylindrical grinder spindle speeds

Compatibility

Designed for use with surface grinders and cylindrical grinders. Rated for grinding 400 Series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting should be performed by a qualified operator following ANSI B11.9 and OSHA 29 CFR 1910.215 guidelines for abrasive wheel machinery. Always ring-test the wheel for cracks before mounting and use the correct flanges and blotters for the arbor size. Never exceed the maximum operating speed of 3600 RPM. Guard the wheel properly and allow it to run at operating speed for at least one minute before engaging the workpiece.