Norton 66253246821 Surface Grinding Wheel 60 Grit 7 in

Product Description

The NORTON 66253246821 is a Type 1 straight surface grinding wheel designed for precision stock removal on metallic workpieces. Built with aluminum oxide abrasive and a vitrified bond, it measures 7 inches in diameter, 0.5 inches thick, and carries a 1.25-inch arbor hole. Rated at a maximum of 3600 RPM and graded at 60 grit with K hardness (medium), this wheel delivers controlled cutting action suited to finish and semi-finish grinding passes. It is part of the Gemini Precision Vitrified Grinding Wheels series and is identified by the GEMINI 60-K specification. Licensed trades and skilled machinists install and dress this wheel on production and job-shop grinding equipment.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its aluminum oxide composition and medium-grade bond make it well suited to soft carbon steels and tool steels where consistent surface finish and dimensional accuracy are required. The porous structure supports cooler cutting and reduces heat buildup during extended grinding cycles. It is a single-piece, non-recessed, non-tapered wheel appropriate for horizontal and vertical spindle surface grinding setups in both light industrial and production environments.

Key Features

• Type 1 straight wheel profile with no recess and no taper for direct mounting
• Aluminum oxide abrasive with vitrified bond for rigid, precise stock removal
• 60 grit, K hardness (medium grade) for controlled cutting on ferrous metals
• Porous structure promotes cooler cutting and chip clearance during extended runs
• Gemini Precision Vitrified series specification: GEMINI 60-K
• Rated to 3600 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels and tool steels. Fits spindle arbors requiring a 1.25-inch hole diameter.

Installation Notes

Grinding wheel installation and dressing must be performed by a qualified machinist or tool-room technician following ANSI B11.9 and applicable shop safety standards. Always inspect the wheel for cracks or chips using a ring test before mounting, and never exceed the marked maximum RPM of 3600. Power down and lock out the grinder completely before removing or mounting any wheel. Use proper flanges and blotters as specified by the machine manufacturer and the wheel supplier.