Norton 66253043866 Surface Grinding Wheel 8in 80 Grit

Product Description

The NORTON 66253043866 is a Type 1 surface grinding wheel engineered for precision stock removal on soft carbon steels, tool steels, and super alloys. It measures 8 inches in diameter and 1/2 inch thick, with a 1-1/4 inch arbor hole for secure spindle mounting. The abrasive material is white aluminum oxide bonded in a vitrified bond system, rated at medium hardness (Grade I). The wheel carries a maximum operating speed of 3,600 RPM. Designated by the specification code 38A80-IVBE, it is semi-friable in character, meaning it self-dresses progressively to maintain a consistent cutting edge throughout the wheel life.

This wheel is suited for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both job-shop and production environments. Typical applications include finish grinding flat surfaces on tool steel workpieces, light stock removal on super alloy components, and precision grinding passes on soft carbon steel parts where consistent surface finish is required. The medium grade and 80 grit combination targets general-purpose material removal with a balance of cut rate and surface finish quality.

Key Features

• White aluminum oxide abrasive for clean, cool cutting on ferrous and super alloy workpieces
• Vitrified bond provides rigidity and form retention under steady grinding loads
• Medium hardness (Grade I) suits a wide range of steel applications without excessive glazing
• Semi-friable grain structure promotes self-dressing and extends usable wheel life
• Type 1 flat wheel profile with no recess and no taper for straightforward surface grinding setups
• 3,600 RPM maximum rated speed for safe use on standard surface and cylindrical grinder spindles

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for soft carbon steels, tool steels, and super alloys per the 38A Type 1 series specification.

Installation Notes

Grinding wheel installation must be performed by a qualified machine operator or toolroom technician following ANSI B7.1 safety standards. Before mounting, inspect the wheel for cracks or chips using a ring test. Power down and lock out the machine before changing wheels. Never exceed the maximum rated RPM of 3,600 RPM as marked on the wheel; always verify that spindle speed is at or below this rating before starting the machine.