Norton 66253043915 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253043915 is a Type 1 surface grinding wheel built for heavy-stock removal on hard ferrous and exotic materials. Measuring 8 inches in diameter and 1/2 inch thick with a 1-1/4 inch arbor hole, this wheel uses a ceramic abrasive grain in a vitrified bond. The ceramic grain is semi-friable, meaning it self-sharpens as it fractures, maintaining cut rate through the wheel's life. Rated at a maximum of 3600 RPM, it carries an H hardness code and a coarse (46 grit) grade. The blue wheel color is characteristic of the 5SG series designation. Licensed machinists, tool-and-die workers, and grinding specialists are the primary installers and operators.

This wheel is engineered for precision surface grinding applications involving difficult-to-grind materials. Confirmed material applications include 400 Series Stainless, Hard Carbon Steels, Tool Steels, Titanium, Super Alloys, Cast Iron, Ductile Iron, and Gray Iron. It is suited for use on CNC Cutting Tool Machines, Cylindrical Grinders, and Surface Grinders. The combination of coarse grit and ceramic abrasive makes it a practical choice for aggressive stock removal passes on hardened workpieces where conventional aluminum oxide wheels break down quickly.

Key Features

• Ceramic abrasive grain provides semi-friable, self-sharpening behavior for consistent cut rate
• Vitrified bond delivers rigidity and open structure suited for dry or wet precision grinding
• Coarse 46 grit for aggressive stock removal on hard and exotic alloys
• H hardness code indicates a soft-to-medium grade wheel that releases grain readily under load
• Porous wheel structure promotes chip clearance and heat dissipation at the grinding face
• Type 1 flat wheel profile with no recess for straightforward mounting on standard arbors

Compatibility

Confirmed for use with CNC Cutting Tool Machines, Cylindrical Grinders, and Surface Grinders requiring a Type 1 wheel with a 1-1/4 inch arbor bore. Suitable for grinding 400 Series Stainless, Hard Carbon Steels, Tool Steels, Titanium, Super Alloys, Cast Iron, Ductile Iron, and Gray Iron.

Installation Notes

Installation and wheel changes must be performed by qualified grinding machine operators following the machine manufacturer's guard and flange requirements. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips before each use using the ring test per ANSI B11.9 guidelines. Never exceed the 3600 RPM maximum operating speed marked on the wheel.