Norton 66252942268 Surface Grinding Wheel 46 Grit 7 in

Product Description

The NORTON 66252942268 is a Type 1 vitrified aluminum oxide surface grinding wheel engineered for precision stock removal on ferrous and non-ferrous metals. At 7 inches in diameter, 1 inch thick, and with a 1-1/4 inch arbor hole, this wheel runs at a maximum of 3600 RPM. The 46-grit coarse grade removes material aggressively while the J hardness code and vitrified bond maintain consistent wheel form under both wet and dry operating conditions. The porous structure promotes coolant flow and chip clearance, reducing heat buildup at the workpiece surface. Machinists and tool grinders specify this wheel for high-production surface grinding and CNC tool reconditioning work.

This wheel is rated for use on a broad range of materials including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both job shop and production environments. The Norton 32A Type 1 series designation indicates a friable aluminum oxide abrasive formulated for free cutting action on hardened steels and difficult-to-grind alloys where heat control is critical.

Key Features

• 46-grit coarse aluminum oxide for aggressive stock removal on hard and soft metals
• J hardness (medium) vitrified bond holds form under continuous surface grinding loads
• Porous wheel structure supports wet and dry operation with improved chip evacuation
• Type 1 flat wheel geometry fits standard surface grinder spindle setups
• 3600 RPM maximum speed rating suits typical production surface grinder spindle speeds
• No recess, no taper — straightforward mounting on 1-1/4 inch arbor

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. Specification code 32A46-JVBE.

Installation Notes

Installation should be performed by a qualified machinist or grinding technician. Always inspect the wheel for cracks or chips before mounting and perform a ring test per ANSI B7.1 safety standards. Power down and lock out the grinder before changing wheels. Never exceed the 3600 RPM maximum speed rating marked on the wheel, and verify that the machine spindle speed does not surpass this limit before operating.