{"product_id":"norton-66243529961-internal-grinding-wheel-60-grit","title":"Norton 66243529961 Internal Grinding Wheel 60 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NORTON 66243529961 is a Type 1 internal grinding wheel designed for precision bore and internal diameter grinding operations. Built with aluminum oxide abrasive in a vitrified bond, this wheel delivers consistent stock removal and surface finish on ferrous metals and hardened steels. It measures 4 inches in diameter by 1\/2 inch thick with a 3\/4-inch hole, and is rated for a maximum of 8,120 RPM. The medium grade and K hardness designation make it well suited for general-purpose internal grinding where controlled cut rates and moderate material removal are required. Licensed grinding machine operators and tool room machinists are the primary users of this wheel.\u003c\/p\u003e\n\u003cp\u003eThis wheel is used in internal grinding applications on surface grinders and dedicated ID grinding machines in production shops, tool rooms, and maintenance environments. The vitrified bond construction provides rigidity and porosity that aids coolant flow and chip clearance during wet or dry grinding cycles. Its semi-friable aluminum oxide grain self-sharpens as it wears, helping maintain cutting action throughout the wheel life. The white wheel color is typical of aluminum oxide vitrified wheels used in precision grinding of hardened tool steels and alloy steels.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAluminum oxide abrasive with semi-friable grain for consistent self-sharpening action\u003c\/li\u003e\n  \u003cli\u003eVitrified bond provides structural rigidity and open porosity for coolant and chip clearance\u003c\/li\u003e\n  \u003cli\u003eMedium grade, K hardness rating suitable for general-purpose internal grinding\u003c\/li\u003e\n  \u003cli\u003e60 grit for moderate stock removal with acceptable surface finish\u003c\/li\u003e\n  \u003cli\u003eMaximum operating speed of 8,120 RPM\u003c\/li\u003e\n  \u003cli\u003eType 1 straight wheel profile with no recess\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard fitment for ID grinding spindles accepting a 3\/4-inch arbor hole on Type 1 straight grinding wheels rated at or above 8,120 RPM.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eGrinding wheel mounting must be performed by qualified personnel following ANSI B7.1 safety standards. Before mounting, inspect the wheel for cracks or chips using the ring test, and ensure the machine spindle speed does not exceed the 8,120 RPM maximum marked on the wheel. Always use proper flanges and blotters, and never exceed the rated wheel speed. Power down and lock out the grinding machine before changing wheels in accordance with applicable OSHA lockout\/tagout procedures.\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\u003eGrit\u003c\/strong\u003e: 60\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade\u003c\/strong\u003e: Medium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Rating\u003c\/strong\u003e: K (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 Type\u003c\/strong\u003e: Type 1 (Straight, No Recess)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 8,120\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23131503\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: 66243529961\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51539256607026,"sku":"66243529961","price":43.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/736446be261c640b80c3e338edcceebf.jpg?v=1785837283","url":"https:\/\/voomisupply.com\/products\/norton-66243529961-internal-grinding-wheel-60-grit","provider":"Voomi Supply","version":"1.0","type":"link"}