Norton 66253043650 Surface Grinding Wheel 8in 46 Grit

Product Description

The NORTON 66253043650 is a Type 1 surface grinding wheel built for heavy-duty stock removal on hard ferrous metals and alloys. It measures 8 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole. The wheel is constructed from ceramic abrasive grain bonded with a vitrified bond, giving it the rigidity and porosity needed for precision surface grinding operations. Rated at a maximum of 3,105 RPM, it carries a coarse 46-grit cutting face with an I hardness code, placing it in the medium hardness range. Licensed HVAC, metalworking, and tool-room professionals rely on this specification for aggressive, consistent material removal without excessive wheel loading.

This grinding wheel is well-suited for surface grinders, cylindrical grinders, and CNC cutting tool machines in production and tool-room environments. It is designed for use on 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The blue ceramic abrasive grain runs cooler than standard aluminum oxide, making it a preferred choice when workpiece thermal damage is a concern on heat-sensitive alloys and precision-ground tooling.

Key Features

• Ceramic abrasive grain with vitrified bond for rigid, porous wheel structure and free-cutting action
• Coarse 46-grit with I hardness code for aggressive stock removal on hard metals
• Porous, semi-friable construction reduces heat buildup at the grinding interface
• Type 1 flat wheel profile with no recess for straightforward mounting
• Rated to 3,105 RPM maximum operating speed
• 5SG Type 1 series specification (5SG46-IVSP)

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron workpieces.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or toolroom technician following ANSI B11 and OSHA 29 CFR 1910.215 safety standards. Always verify the machine spindle speed does not exceed the 3,105 RPM maximum rated speed of the wheel before mounting. Inspect the wheel for cracks or chips using a ring test prior to installation, and confirm the arbor hole fits the machine spindle with appropriate flanges and blotters. Never exceed the marked maximum operating speed.