Norton 66253019350 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253019350 is a Type 1 surface grinding wheel designed for precision material removal on steel and tool steel workpieces. Built with aluminum oxide abrasive and a vitrified bond, this wheel operates at a maximum of 3600 RPM and carries a coarse 46-grit rating with an H hardness code. The 8-inch diameter and 1/2-inch thickness suit standard surface and cylindrical grinder spindle configurations. At 1.8 pounds, the wheel is compatible with wet grinding operations and is color-coded ruby, consistent with the 48A series designation. Licensed grinding machine operators and tool-and-die technicians are the primary installers.

This wheel is suited for wet surface grinding operations on hard carbon steels, soft carbon steels, and tool steels. It fits surface grinders, cylindrical grinders, and CNC cutting tool machines equipped for Type 1 straight-wheel mounting. The 1-1/4-inch arbor hole accommodates standard spindle sizes common in production and toolroom environments. The porous, vitrified bond structure promotes coolant flow and heat dissipation during extended wet grinding passes, making it well-suited for close-tolerance surface finishing work in both job shop and production settings.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent stock removal on ferrous metals
• 46-grit coarse grade rated for aggressive material removal in wet grinding applications
• H hardness code with porous wheel structure supports coolant penetration and thermal management
• Type 1 straight-wheel profile with no recess and no taper for direct arbor mounting
• Maximum operating speed of 3600 RPM — do not exceed this rating
• Specification designation 48A46-HVP2 for cross-reference and replacement verification

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Intended for grinding hard carbon steels, soft carbon steels, and tool steels. Verify arbor size and maximum RPM rating against the machine nameplate before mounting.

Installation Notes

Wheel mounting must be performed by a qualified operator following ANSI B11.22 and OSHA 29 CFR 1910.215 requirements for abrasive wheel machinery. Inspect the wheel for cracks or chips before each use — never mount a damaged wheel. Power down and lockout/tagout the grinding machine completely before changing wheels. Use properly rated flanges and never exceed the 3600 RPM maximum speed rating stamped on the wheel or stated by the manufacturer.