Norton 66253302625 Surface Grinding Wheel 14in Ceramic

Product Description

The NORTON 66253302625 is a Type 1 surface grinding wheel engineered for aggressive stock removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and a vitrified bond, this wheel delivers consistent cut rates and long wheel life under the heat and pressure of surface and cylindrical grinding operations. It measures 14 inches in diameter, 1.5 inches thick, with a 5-inch arbor hole. The 46 grit, coarse grade, H hardness rating positions it for heavy-duty material removal passes where precision form grinding is not the primary concern. Maximum operating speed is 1800 RPM. Licensed trades and tool-room machinists typically select this wheel for production surface grinding on difficult-to-grind materials.

This wheel is suited for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. It is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. The porous, semi-friable ceramic structure keeps the wheel face open and cool during extended grinding cycles, reducing loading on hard and gummy materials. It carries the series designation 5SG Type 1 and is color-coded blue for quick identification at the machine.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent cut rate and long service life
• 46 grit coarse grade for aggressive stock removal on hard ferrous and exotic alloys
• H hardness (soft hardness rating) allows grain to fracture and self-dress under load
• Porous, semi-friable structure reduces heat buildup and wheel loading
• Type 1 flat wheel profile with no recess, no taper — direct drop-in for standard arbor flanges
• Rated at 1800 RPM maximum operating speed
• 5SG series designation — blue wheel color for fast visual identification

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines requiring a Type 1 wheel with a 5-inch arbor hole. Suitable for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machine operator or toolroom technician following ANSI B7.1 safety standards for abrasive wheel use. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Machine must be fully de-energized and locked out before changing wheels. Never exceed the 1800 RPM maximum operating speed stamped on the wheel blotter.