Norton 66253262702 Surface Grinding Wheel 46 Grit 12 in

Product Description

The NORTON 66253262702 is a Type 1 surface grinding wheel engineered for precision stock removal on ferrous metals and specialty alloys. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent, controlled cutting action at a coarse 46 grit. It measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole, and carries a maximum rated speed of 2,070 RPM. At 9.045 pounds, the wheel suits heavy-duty surface and cylindrical grinding operations performed by machinists and grinding technicians in production or job-shop environments.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. Its aluminum oxide composition and I-hardness (medium) rating make it well suited for grinding soft carbon steels, tool steels, and super alloys where aggressive material removal is required. The semi-friable abrasive continually fractures to expose fresh cutting edges, maintaining consistent cut rates throughout the wheel life. The white, non-porous, non-tapered Type 1 profile fits standard straight-wheel spindle setups common in both manual and automated grinding cells.

Key Features

• Aluminum oxide abrasive with semi-friable grain structure for self-sharpening action
• Vitrified bond provides rigid, stable cutting with good form-holding
• Coarse 46 grit rated for aggressive stock removal on soft carbon steels, tool steels, and super alloys
• I hardness (medium) resists glazing while maintaining wheel shape under load
• Non-porous, non-tapered, no-recess Type 1 profile for straightforward spindle mounting
• Maximum rated speed of 2,070 RPM — do not exceed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding soft carbon steels, tool steels, and super alloys. Fits spindle arbors requiring a 3-inch hole on machines rated for wheels up to 12 inches in diameter.

Installation Notes

Grinding wheel installation and dressing should be performed by a qualified machinist or grinding technician following ANSI B11.9 safety standards. Always power down and de-energize the machine before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before mounting, and verify that the machine spindle speed does not exceed the 2,070 RPM maximum rating marked on the wheel. Use proper flanges and blotters as required; never force the wheel onto an undersized or damaged arbor.