{"product_id":"norton-66243427937-type-5-internal-grinding-wheel-60-grit","title":"Norton 66243427937 Type 5 Internal Grinding Wheel 60 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NORTON 66243427937 is a Type 5 recessed internal grinding wheel designed for precision bore and internal diameter grinding operations. Built with aluminum oxide abrasive at 60 grit, it delivers medium-grade cutting action suited to ferrous metals and general-purpose tool room work. The vitrified bond provides rigidity and consistent stock removal, while the K hardness rating keeps the wheel performing predictably under load. Rated to a maximum of 21,645 RPM, this wheel is engineered for high-speed spindle applications on internal grinding machines. It weighs approximately 1.8 pounds.\u003c\/p\u003e\n\u003cp\u003eThis wheel is used in surface and internal grinding applications where a recessed wheel profile is required. The Type 5 configuration features a single-side recess, making it compatible with recessed-flange mounting systems common on dedicated internal grinding machines and toolroom grinders. Typical installers include machining and grinding technicians performing bore finishing, bushing seat preparation, and similar precision grinding tasks in production or maintenance shop environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e60 grit aluminum oxide abrasive for medium-grade material removal on ferrous workpieces\u003c\/li\u003e\n  \u003cli\u003eType 5 single-side recessed profile for recessed-flange spindle mounting\u003c\/li\u003e\n  \u003cli\u003eVitrified bond construction provides rigidity and consistent cutting geometry\u003c\/li\u003e\n  \u003cli\u003eK hardness rating delivers stable performance across a range of feed rates\u003c\/li\u003e\n  \u003cli\u003e21,645 maximum RPM rating supports high-speed internal grinding spindles\u003c\/li\u003e\n  \u003cli\u003eGray wheel color for quick visual identification of abrasive type in the shop\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use internal grinding wheel for internal grinding machines equipped with recessed-flange spindle systems that accept Type 5 wheels measuring 1.5 inches in diameter with a 0.375-inch hole and 0.5-inch single-side recess.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by qualified grinding machine operators or machining technicians. Always power down and lock out the grinding machine before mounting or removing any wheel. Inspect the wheel for cracks or chips before mounting, and conduct a ring test per ANSI B7.1 safety standards. Never exceed the rated maximum RPM of 21,645 under any operating condition.\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\u003eWheel Hardness 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\u003eWheel Type\u003c\/strong\u003e: Type 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecess Type\u003c\/strong\u003e: One Side\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Diameter\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Thickness\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Size\u003c\/strong\u003e: 0.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecess Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 21,645\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: Gray\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.8 pounds\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: 66243427937\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51541307228466,"sku":"66243427937","price":19.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bf54827f6ef8522afb5a0f1dff6d3aab.jpg?v=1785871956","url":"https:\/\/voomisupply.com\/products\/norton-66243427937-type-5-internal-grinding-wheel-60-grit","provider":"Voomi Supply","version":"1.0","type":"link"}