Norton 66253043451 Surface Grinding Wheel 150 Grit 8 in

Product Description

The NORTON 66253043451 is a Type 1 surface grinding wheel engineered for precision stock removal and finishing on metallic workpieces. It is constructed from white aluminum oxide abrasive bonded in a vitrified matrix, producing a semi-friable grain structure that self-sharpens as it wears. At 8 inches in diameter, 1/4 inch thick, and with a 1-1/4 inch arbor hole, the wheel fits standard surface grinder spindles. A K hardness rating (medium) and 150 grit (very fine) combine to deliver smooth surface finishes without excessive heat buildup on the part. Maximum rated speed is 3600 RPM.

This wheel is suited for surface grinding and cylindrical grinding applications on soft carbon steels, tool steels, and super alloys. It performs on CNC cutting tool machines, cylindrical grinders, and surface grinders in both production and toolroom environments. The non-porous, non-tapered, no-recess Type 1 configuration makes it a straightforward drop-in for standard straight-wheel setups. Typical users include tool and die makers, precision grinder operators, and metalworking shops requiring consistent finish quality at 150 grit.

Key Features

• White aluminum oxide abrasive for clean cutting on steels and super alloys
• Vitrified bond provides rigidity and consistent wheel form retention
• Semi-friable grain continuously exposes fresh cutting edges during use
• 150 grit very fine grade for smooth surface finishes
• K hardness (medium) balances wheel life and cutting efficiency
• Non-porous, non-tapered, no-recess Type 1 profile for broad machine compatibility

Compatibility

Designed for use with CNC cutting tool machines, cylindrical grinders, and surface grinders. Material applications include soft carbon steels, tool steels, and super alloys. Series designation is 38A Type 1; internal specification code 38A150-KVBE.

Installation Notes

Grinding wheel mounting should be performed by a qualified machine operator following ANSI B11.9 and OSHA 29 CFR 1910.215 guidelines. Always ring-test the wheel before mounting and inspect for cracks or chips. Power down and lock out the grinder before changing wheels. Never exceed the 3600 RPM maximum rated speed marked on the wheel or its packaging.