Norton 66253019361 Type 5 Surface Grinding Wheel 8in 46G

Product Description

The NORTON 66253019361 is a Type 5 surface grinding wheel engineered for demanding material removal on hard ferrous metals and exotic alloys. Built on a vitrified bond with a ceramic abrasive grain, this wheel operates in the 3SG series, delivering consistent cutting action across wet and dry applications. At 8 inches in diameter, 1 inch thick, with a 1-1/4 inch arbor hole and a one-side recess measuring 3-1/4 inches in diameter by 1/2 inch deep, it mounts directly to surface grinders and cylindrical grinders. The 46-grit, G-hardness (coarse, soft-rated) specification makes it well suited for aggressive stock removal while the semi-friable ceramic grain self-sharpens under load. Rated to 3600 RPM maximum, the wheel weighs 3.2 pounds.

This wheel is designed for use on surface grinders and cylindrical grinders in production and toolroom environments. Typical applications include grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The porous, vitrified structure promotes chip clearance and coolant penetration, making it effective for both wet and dry grinding cycles. It is commonly used by machinists, tool and die makers, and precision grinding technicians in industrial and job-shop settings.

Key Features

• Ceramic abrasive grain (3SG series) with semi-friable, self-sharpening properties for consistent cut rate
• Vitrified bond with porous structure promotes chip clearance and coolant flow
• 46 grit, G hardness (coarse, soft rating) optimized for aggressive stock removal on hard metals
• Type 5 one-side recessed profile with 3-1/4 inch recess diameter and 1/2 inch recess depth
• Rated for both wet and dry grinding operations up to 3600 RPM
• Purple wheel color for easy grade and series identification in the shop

Compatibility

Compatible with surface grinders and cylindrical grinders accepting an 8 inch diameter, 1-1/4 inch arbor hole Type 5 wheel. Suitable for material applications including 400 Series Stainless, Hard Carbon Steels, Tool Steels, Titanium, Super Alloys, Cast Iron, Ductile Iron, and Gray Iron.

Installation Notes

Installation should be performed by a qualified machinist or grinding technician following the machine manufacturer's mounting instructions and ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and de-energize the grinder completely before changing wheels. Never exceed the 3600 RPM maximum operating speed marked on the wheel.