Norton 66253263164 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253263164 is a Type 5 surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Constructed with aluminum oxide abrasive and a vitrified bond, this wheel measures 12 inches in diameter, 1.5 inches thick, with a 5-inch arbor hole. The 46-grit, coarse-grade specification makes it well suited for aggressive material removal passes where surface finish is secondary to throughput. Rated at a maximum of 2,070 RPM, the wheel carries the 32A46-HVBE specification and is marked with an H hardness code in the soft-to-medium range. It weighs 9.75 pounds. Licensed grinding technicians and machining professionals install and dress this wheel on compatible grinding equipment.

This wheel is intended for use on cylindrical grinders and surface grinders in production and maintenance machining environments. The aluminum oxide grain and vitrified bond combination performs reliably across a broad range of workpiece materials. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The one-side recess design, with a 7.5-inch recess diameter and 0.5-inch recess depth, reduces wheel weight and allows clearance in recessed-hub flange setups common in surface grinding applications.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent cut rate and wheel integrity
• 46 grit coarse grade for aggressive stock removal on a wide range of metals
• Type 5 one-side recessed profile with 7.5-inch recess diameter and 0.5-inch recess depth
• H hardness code in the soft range, reducing glazing on harder workpiece materials
• Maximum operating speed of 2,070 RPM
• Porous structure promotes chip clearance and coolant flow during wet or dry grinding

Compatibility

Designed for use with cylindrical grinders and surface grinders. Compatible material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron, per the 32A46-HVBE specification series.

Installation Notes

Grinding wheel mounting must be performed by a qualified operator following ANSI B11.9 and OSHA 1910.215 safety standards. Always power down and lock out the grinder before mounting or dismounting any wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the marked maximum RPM. Flanges and blotters must be clean, flat, and properly sized for the 5-inch arbor hole before tightening.