Norton 66253138903 Surface Grinding Wheel 46 Grit 10 in

Product Description

The NORTON 66253138903 is a Type 1 straight surface grinding wheel designed for precision stock removal on ferrous metals in industrial grinding applications. Built on an aluminum oxide abrasive with a vitrified bond, this wheel operates at a maximum of 2485 RPM and carries a coarse 46-grit, I-hardness (medium) rating. At 10 inches in diameter, 1 inch thick, and with a 3-inch arbor hole, it fits standard surface and cylindrical grinder spindles. The porous vitrified structure promotes free cutting and efficient chip clearance, making it a reliable choice for licensed machinists and toolroom technicians handling high-volume surface grinding work.

This wheel is rated for use on hard carbon steels, soft carbon steels, and tool steels. Compatible machine types include surface grinders, cylindrical grinders, and CNC cutting tool machines. The 3-inch hole size and Type 1 straight profile make it a standard fit on most industrial pedestal and reciprocating surface grinder setups found in toolrooms, production shops, and maintenance facilities.

Key Features

• Aluminum oxide abrasive for consistent performance on ferrous metals including tool steels and carbon steels
• Vitrified bond with porous structure supports free cutting and effective swarf evacuation
• 46-grit coarse grade for aggressive stock removal applications
• I-hardness (medium) rating balances wheel life with cutting efficiency
• Maximum rated speed of 2485 RPM for safe operation on standard surface grinder spindles
• Series 32A Type 1 straight profile with no recess and no taper for direct spindle mounting

Compatibility

Rated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding hard carbon steels, soft carbon steels, and tool steels. The 3-inch arbor hole and Type 1 straight profile fit standard industrial grinding spindles sized for this wheel diameter.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or toolroom technician following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always inspect the wheel for cracks or damage using the ring test before mounting, and never exceed the rated maximum RPM of 2485. Power down and lock out the grinder before changing wheels. Use proper flanges and a compressible blotter on each side of the wheel as required by ANSI standards.