Norton 66252916219 Surface Grinding Wheel 46 Grit 7 in

Product Description

The NORTON 66252916219 is a Type 1 surface grinding wheel designed for precision stock removal on a range of metallic workpieces. It measures 7 inches in diameter, 1/2 inch thick, with a 1-1/4 inch arbor hole. The abrasive material is aluminum oxide in a vitrified bond, rated at 46 grit with an H hardness code (coarse grade, soft hardness rating). The semi-friable grain structure and porous wheel construction allow for free cutting action and effective coolant retention during wet or dry operation. This wheel is suited for licensed machinists and grinding technicians working in production or toolroom environments.

This grinding wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its coarse 46-grit, soft-grade specification makes it well matched for material removal on soft carbon steels, tool steels, and super alloys. The pink aluminum oxide abrasive in the 25A series vitrified bond is commonly selected when controlled cut rates and consistent surface finish are required across both wet and dry grinding setups in light manufacturing and toolroom applications.

Key Features

• Type 1 flat wheel profile with no recess and no taper for straightforward surface grinding setups
• 46 grit, H hardness (coarse grade, soft hardness rating) for aggressive material removal with reduced wheel loading
• Semi-friable aluminum oxide abrasive refreshes cutting edges under moderate grinding pressure
• Vitrified bond provides rigidity and dimensional stability at speeds up to 3600 RPM
• Porous structure supports both wet and dry operation, promoting coolant flow and heat dissipation
• 25A series specification (25A46-HVP2) for consistent lot-to-lot performance

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 that the machine spindle speed does not exceed the 3600 RPM maximum rating before mounting.

Installation Notes

Installation should be performed by a qualified machinist or grinding technician following the machine manufacturer's wheel-mounting procedures and ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips using the ring test before mounting, and ensure the arbor hole size and flange configuration match the machine spindle. Power down and lock out the grinder before changing wheels. Never exceed the maximum operating speed marked on the wheel.