Norton 66253363960 Surface Grinding Wheel 14in 46 Grit

Product Description

The NORTON 66253363960 is a Type 1 surface grinding wheel engineered for aggressive stock removal on ferrous metals and difficult-to-grind alloys. At 14 inches in diameter and 1 inch thick with a 3-inch arbor hole, this wheel mounts to surface grinders, cylindrical grinders, and CNC cutting tool machines. The ceramic abrasive grain is semi-friable, meaning it fractures under load to expose fresh cutting edges and maintain a consistent cut rate throughout the wheel life. The vitrified bond adds structural rigidity and allows free coolant flow through the porous structure. Rated at a maximum of 1800 RPM, this wheel carries a 46-grit coarse grade with an I hardness code, making it suited for high-material-removal applications where surface finish is secondary to cut speed.

This wheel is designed for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It fits surface grinders and cylindrical grinders commonly found in tool rooms, production grinding cells, and job shops where high-performance ceramic abrasives are specified over conventional aluminum oxide. The 5SG Type 1 series designation identifies it as part of Norton's seeded-gel ceramic line, targeted at shops running hard, heat-sensitive, or work-hardening materials.

Key Features

• Ceramic abrasive grain — semi-friable construction maintains sharp cutting edges under load
• Vitrified bond with porous structure allows coolant penetration and heat dissipation
• 46 grit coarse grade optimized for maximum stock removal rates
• I hardness code (medium) balances wheel durability with consistent grain release
• Type 1 flat wheel profile — no recess, no taper — for straightforward surface and cylindrical grinding setups
• Blue wheel color consistent with 5SG ceramic series identification

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. Specification code 5SG46-IVS.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machine operator or toolroom technician following ANSI B11.9 and OSHA 29 CFR 1910.215 guarding requirements. Verify the machine spindle speed does not exceed the 1800 RPM maximum marked on the wheel before mounting. Inspect the wheel for cracks or chips using a ring test before installation, and never exceed the rated speed under any circumstance. Power down and lock out the grinder before changing wheels, and always use properly rated flanges and a blotter on each side of the wheel.