{"product_id":"norton-66253043749-surface-grinding-wheel-8in-46-grit","title":"Norton 66253043749 Surface Grinding Wheel 8in 46 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NORTON 66253043749 is a Type 1 surface grinding wheel engineered for precision material removal on ferrous metals and high-performance alloys. Built from white aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent stock removal and a predictable wear pattern across the grinding face. It measures 8 inches in diameter, 1\/2 inch thick, with a 1-1\/4 inch arbor hole. The 46-grit, coarse-grade construction makes it well suited for aggressive roughing passes where surface finish is secondary to material removal rate. Rated at a maximum of 3,105 RPM, it is installed and operated by machinists and tool-room technicians on production and maintenance grinding equipment.\u003c\/p\u003e\u003cp\u003eThis wheel is designed for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in both production shop and tool-room environments. Its aluminum oxide abrasive formulation performs best on soft carbon steels, tool steels, and super alloys. The semi-friable grain structure allows the wheel to self-dress partially during aggressive cuts, helping maintain a sharp cutting face through a range of material hardnesses. It carries the 38A Type 1 series designation and a medium hardness rating with hardness code I, making it a versatile choice for general-purpose surface grinding applications in both light manufacturing and heavy toolroom use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWhite aluminum oxide abrasive for consistent performance on carbon steels, tool steels, and super alloys\u003c\/li\u003e\n\u003cli\u003eVitrified bond provides rigidity and porosity control for predictable wheel wear\u003c\/li\u003e\n\u003cli\u003e46 grit, coarse grade suited for high material removal rate roughing operations\u003c\/li\u003e\n\u003cli\u003eSemi-friable grain structure promotes self-dressing behavior during aggressive cuts\u003c\/li\u003e\n\u003cli\u003eNon-porous, non-tapered Type 1 flat wheel profile for standard surface and cylindrical grinder spindle setups\u003c\/li\u003e\n\u003cli\u003eMaximum operating speed of 3,105 RPM — do not exceed this rating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Fits spindles requiring a 1-1\/4 inch arbor hole. Suitable for grinding soft carbon steels, tool steels, and super alloys per the 38A Type 1 series specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or grinding machine operator. Before mounting, inspect the wheel for cracks or chips by performing a ring test; do not mount a damaged wheel. Power down and lock out the grinder before changing wheels, and confirm the machine spindle speed does not exceed the 3,105 RPM maximum rating stamped on the wheel. Always use proper flanges and a blotter between the flange face and the wheel, and run the newly mounted wheel under a guard at full speed for at least one minute before bringing it into contact with the workpiece.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Diameter\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Thickness\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Size\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrit\u003c\/strong\u003e: 46\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness Code\u003c\/strong\u003e: I\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Hardness Rating\u003c\/strong\u003e: Medium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 3,105\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Aluminum Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBond Type\u003c\/strong\u003e: Vitrified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Type\u003c\/strong\u003e: Type 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFriability\u003c\/strong\u003e: Semi-Friable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePorous\u003c\/strong\u003e: Non-Porous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTapered\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecess Type\u003c\/strong\u003e: No Recess\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 38A Type 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification Code\u003c\/strong\u003e: 38A46-IVBE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Soft Carbon Steels, Tool Steels, Super Alloys\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.09 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: NORTON\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66253043749\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51540308984114,"sku":"66253043749","price":76.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5b6486ce3c30f2d1c8af2aa964c9e894.jpg?v=1785851785","url":"https:\/\/voomisupply.com\/products\/norton-66253043749-surface-grinding-wheel-8in-46-grit","provider":"Voomi Supply","version":"1.0","type":"link"}