Norton 66253044312 Surface Grinding Wheel 8in 60 Grit

Product Description

The NORTON 66253044312 is a Type 1 surface grinding wheel engineered for precision stock removal on a wide range of metallic and non-metallic materials. Built with a silicon carbide abrasive grain and a vitrified bond, this wheel delivers consistent cut rate and form retention throughout its service life. It measures 8 inches in diameter, 3/4 inches thick, with a 1-1/4 inch arbor hole, and is rated to a maximum of 3600 RPM. The J hardness code and medium grade classification make it well suited for applications where moderate wheel wear is acceptable in exchange for aggressive material removal. Licensed trades and toolroom machinists specify this wheel for production and maintenance grinding.

This wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its silicon carbide composition and medium-grade vitrified bond make it appropriate for grinding 300 series stainless steel, titanium, aluminum, brass, bronze, copper, gray iron, masonry, and natural stone. The 39C Type 1 series designation identifies it as a straight wheel with no recess and no taper, which is the standard configuration for horizontal-spindle surface grinders found in job shops and production facilities.

Key Features

• Silicon carbide abrasive grain for effective grinding of ferrous and non-ferrous metals, masonry, and stone
• Vitrified bond provides rigidity and consistent wheel geometry during material removal
• Type 1 straight wheel profile with no recess and no taper for direct spindle mounting
• 60 grit, J hardness (medium grade) balances stock removal rate with surface finish quality
• 3600 RPM maximum operating speed rated for safe use on standard surface and cylindrical grinders
• Green wheel color consistent with silicon carbide identification standards

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 300 series stainless steel, titanium, aluminum, brass, bronze, copper, gray iron, masonry, and natural stone per manufacturer material application data.

Installation Notes

Installation should be performed by a qualified machinist or grinding equipment operator following the machine manufacturer's mounting procedures and ANSI B11.9 safety standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test on vitrified wheels. Power down and lock out the grinder before changing wheels. Never exceed the wheel's maximum RPM rating as marked; confirm spindle speed before starting the machine.