Norton 66253007166 Surface Grinding Wheel 46 Grit 8 in

Product Description

The NORTON 66253007166 is a Type 1 straight surface grinding wheel designed for precision stock removal on ferrous metals. Built from aluminum oxide abrasive bonded with a vitrified bond, this wheel delivers consistent, controlled cuts on hard carbon steels, soft carbon steels, and tool steels. It measures 8 inches in diameter, 0.75 inches thick, and features a 1.25-inch arbor hole. Rated at a maximum of 3105 RPM and specified at 46 grit with H hardness (coarse grade), it is suited for aggressive surface grinding operations performed by machinists and grinding technicians.

This wheel is intended for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in machine shops and tool rooms handling ferrous workpieces. The coarse 46-grit rating makes it appropriate for high-material-removal passes on hard and soft carbon steels as well as tool steels. The porous structure promotes coolant flow and chip clearance during extended grinding cycles, reducing heat buildup at the workpiece surface.

Key Features

• Aluminum oxide abrasive for reliable performance on ferrous metals including hard carbon steels, soft carbon steels, and tool steels
• Vitrified bond construction provides rigidity and consistent wheel shape throughout the wheel life
• Coarse 46-grit rating supports high material removal rates
• Porous wheel structure aids coolant penetration and chip evacuation
• Maximum rated speed of 3105 RPM for safe operation on compatible machines
• Type 1 straight profile with no recess, compatible with standard surface and cylindrical grinder arbors

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Fits spindles with a 1.25-inch arbor hole. Suitable for material applications including hard carbon steels, soft carbon steels, and tool steels per supplier specification 32AA46-HVTRP.

Installation Notes

Installation should be performed by a qualified machinist or grinding technician following the machine manufacturer guidelines and applicable ANSI B11 grinding safety standards. Always power down and lock out the grinder before mounting or removing the wheel. Inspect the wheel for cracks or chips before each use using the ring test, and never operate above the maximum rated RPM stamped on the wheel or listed on its blotter. Use appropriate flanges and a compressible blotter on each side of the wheel when mounting.