Norton 66253044379 Surface Grinding Wheel 8in 100 Grit

Product Description

The NORTON 66253044379 is a Type 1 surface grinding wheel designed for precision material removal on ferrous and non-ferrous workpieces. Built with a silicon carbide abrasive grain and a vitrified bond, this wheel delivers consistent stock removal with a fine cut at 100 grit. The wheel measures 8 inches in diameter, 1 inch thick, with a 1-1/4 inch arbor hole, and is rated for a maximum of 3600 RPM. Hardness code I places it in the medium range, making it well-suited for controlled grinding passes on hard and semi-hard materials. It weighs 1.75 pounds and carries a green wheel color typical of silicon carbide construction.

This wheel is suited for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both shop and production environments. Material applications include 300 series stainless steel, titanium, aluminum, brass, bronze, copper, gray iron, masonry, and natural stone. The vitrified bond provides rigidity and form-holding, which supports flat surface work and close-tolerance finishing passes. It is a non-tapered, non-recessed Type 1 flat wheel, appropriate for straight-face grinding operations in professional machining and fabrication settings.

Key Features

• Silicon carbide abrasive grain for effective grinding on non-ferrous metals, stone, and masonry
• Vitrified bond construction provides rigidity and consistent wheel form during operation
• 100 grit fine grade for controlled stock removal and smoother surface finishes
• Medium hardness (Code I) balances wheel life with consistent cut performance
• 3600 RPM maximum speed rating for safe use on standard surface and cylindrical grinders
• Non-porous, non-recessed Type 1 flat profile with no taper

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Compatible material applications include 300 series stainless steel, titanium, aluminum, brass, bronze, copper, gray iron, masonry, and natural stone. Series designation is 39C Type 1, with specification code 39C100-IVMT.

Installation Notes

Grinding wheel mounting should be performed by a qualified machine operator or toolroom technician following ANSI B11 and OSHA 1910.215 safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the grinder before changing wheels. Never exceed the maximum RPM stamped on the wheel or listed by the manufacturer, and always use the appropriate flanges and blotter paper when mounting.