Norton 66253207703 Surface Grinding Wheel 12in 46 Grit

Product Description

The NORTON 66253207703 is a Type 1 straight surface grinding wheel engineered for precision stock removal on ferrous metals. It measures 12 inches in diameter, 1 inch thick, with a 3-inch arbor hole. The wheel uses aluminum oxide abrasive bonded with a vitrified bond system, delivering consistent cutting action and free-cutting performance at coarse stock removal rates. Rated at a maximum of 2070 RPM, the H hardness code and coarse 46-grit structure are matched to applications requiring aggressive material removal on hard and soft carbon steels as well as tool steels. The 32AA46-HVTRP specification identifies the full wheel formulation for procurement and maintenance records.

This wheel is suited for surface grinding and cylindrical grinding operations in machine shops, toolrooms, and production grinding environments. It is compatible with surface grinders and CNC cutting tool machines. The coarse grit and soft-to-medium H hardness rating allow the abrasive grains to break down and self-dress effectively when working harder workpiece materials, maintaining cut rate across the grinding pass. It is a standard choice for toolroom operators and grinding machine operators working with carbon and tool steel workpieces.

Key Features

• Aluminum oxide abrasive for reliable performance on hard and soft carbon steels and tool steels
• Vitrified bond construction provides rigidity, porosity, and consistent grain exposure
• 46 grit coarse grade for high material removal rates
• H hardness rating allows effective self-dressing on harder workpiece materials
• Porous wheel structure supports coolant flow and chip clearance during wet grinding
• No recess, no taper — standard Type 1 straight wheel geometry

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding hard carbon steels, soft carbon steels, and tool steels as specified by the manufacturer.

Installation Notes

Grinding wheel mounting and dressing must be performed by a qualified machine operator or toolroom technician in accordance with ANSI B11.9 and wheel manufacturer safety guidelines. Before mounting, inspect the wheel for cracks using the ring test. Power down and lockout the grinder before changing wheels. Never exceed the 2070 RPM maximum speed rating marked on the wheel.