Norton 66252942209 Surface Grinding Wheel 46 Grit 7 in

Product Description

The NORTON 66252942209 is a Type 5 surface grinding wheel designed for precision stock removal on ferrous and non-ferrous metals. Built on a vitrified bond with an aluminum oxide abrasive, this wheel measures 7 inches in diameter and 3/4 inches thick with a 1-1/4 inches arbor hole. The 46-grit coarse grade removes material aggressively while the H hardness code and soft hardness rating help the wheel break down predictably to expose fresh abrasive. The 32A46-HVBE specification identifies the exact wheel formulation. Maximum operating speed is 3,600 RPM. Weighing 2.28 pounds, it is sized for bench-mounted or pedestal surface grinders used by machinists and tool-and-die professionals.

This wheel is suited for surface and cylindrical grinding applications in production and maintenance environments. Its aluminum oxide abrasive is appropriate for grinding 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The one-side recessed profile — with a 2-3/4 inches recess diameter and 1/4 inches recess depth — provides clearance for flanges and reduces overall wheel weight. It is a practical choice for machine shops requiring a coarse-stock-removal wheel in a standard 7-inch diameter.

Key Features

• Aluminum oxide abrasive for use on steels, tool steels, stainless, aluminum, and cast iron
• Vitrified bond for rigidity and consistent cutting action
• 46-grit coarse grade delivers aggressive material removal
• H hardness code (soft rating) promotes self-dressing and reduces glazing
• Type 5 one-side recessed profile with 2-3/4 inches recess diameter and 1/4 inches recess depth
• Rated to 3,600 RPM maximum operating speed

Compatibility

Designed for use with surface grinders and cylindrical grinders accepting a 7 inches diameter, 1-1/4 inches arbor hole Type 5 wheel. Compatible material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel installation must be performed by a qualified operator following ANSI B11.9 and applicable shop safety standards. Before mounting, ring-test the wheel for cracks and confirm the machine spindle speed does not exceed the wheel's 3,600 RPM maximum rating. Power down and lock out the grinder before changing wheels. Never force a wheel onto a flange — the arbor hole must fit freely without binding.