{"product_id":"norton-66253043439-surface-grinding-wheel-8in-80-grit","title":"Norton 66253043439 Surface Grinding Wheel 8in 80 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NORTON 66253043439 is a Type 1 surface grinding wheel designed for precision stock removal on metallic workpieces. Built around a white aluminum oxide abrasive bonded in a vitrified matrix, it delivers consistent cut rates and predictable wear across extended production runs. The wheel measures 8 inches in diameter and 1\/4 inch thick with a 1-1\/4 inch arbor hole, making it a standard fit for benchtop and floor-standing surface grinders. At 80 grit and J hardness (medium grade), it sits in the middle of the performance range, aggressive enough for efficient material removal yet controlled enough to hold surface finish tolerances on softer and tool steels. Maximum operating speed is 3600 RPM.\u003c\/p\u003e\n\u003cp\u003eThis wheel is suited for grinding soft carbon steels, tool steels, and super alloys in job shop, toolroom, and production environments. It is used on surface grinders, cylindrical grinders, and CNC cutting tool machines. The 38A series designation indicates a semi-friable aluminum oxide grain structure, which self-sharpens under load and maintains cutting efficiency without excessive heat buildup at the workpiece. It is appropriate for both roughing and finish passes on ferrous metals where burn-free results are required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWhite aluminum oxide abrasive (38A series) with semi-friable grain for consistent self-sharpening action\u003c\/li\u003e\n  \u003cli\u003eVitrified bond provides rigid wheel structure and high porosity retention for coolant flow\u003c\/li\u003e\n  \u003cli\u003e80 grit, J hardness (medium grade) suitable for efficient material removal on soft carbon steels and tool steels\u003c\/li\u003e\n  \u003cli\u003eType 1 straight wheel profile with no recess and no taper for direct arbor mounting\u003c\/li\u003e\n  \u003cli\u003e3600 RPM maximum rated operating speed\u003c\/li\u003e\n  \u003cli\u003eNon-porous construction maintains dimensional stability during wet or dry grinding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRated for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Material applications include soft carbon steels, tool steels, and super alloys. Wheel specification code 38A80-JVBE confirms abrasive, grit, hardness, bond, and series for cross-reference verification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eGrinding wheel installation and dressing should be performed by a qualified machinist or grinding specialist following ANSI B11.9 safety standards and the machine manufacturer's mounting instructions. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the rated maximum RPM marked on the wheel or packaging. Blotters must be used between the wheel and flanges as required by machine specifications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Aluminum Oxide\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: 38A80-JVBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Type\u003c\/strong\u003e: Type 1 (Straight)\u003c\/li\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: 0.25 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: 80\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Code\u003c\/strong\u003e: J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Medium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBond Type\u003c\/strong\u003e: Vitrified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFriability\u003c\/strong\u003e: Semi-Friable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: White\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\u003eMaximum RPM\u003c\/strong\u003e: 3600\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.04 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 66253043439\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51541796421938,"sku":"66253043439","price":87.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/748143409f44976cf4ef777f90e62e04.jpg?v=1785885214","url":"https:\/\/voomisupply.com\/products\/norton-66253043439-surface-grinding-wheel-8in-80-grit","provider":"Voomi Supply","version":"1.0","type":"link"}