{"product_id":"norton-66243529532-internal-grinding-wheel-60-grit","title":"Norton 66243529532 Internal Grinding Wheel 60 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe NORTON 66243529532 is a Type 1 internal grinding wheel designed for precision bore and internal diameter grinding operations. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal on ferrous metals and tool steels. It measures 4 inches in diameter by 1\/4 inches thick with a 1\/2 inches arbor hole, and is rated for a maximum speed of 8,120 RPM. The medium grade and K hardness rating make it well-suited for controlled material removal on hardened components. Machinists, tool grinders, and maintenance professionals in industrial and job-shop environments are the primary installers of this wheel.\u003c\/p\u003e\u003cp\u003eThis grinding wheel is used in internal grinding applications where bore geometry, surface finish, and dimensional accuracy are required. It fits standard internal grinding spindles that accept a 1\/2 inches bore mount. Typical applications include grinding bearing seats, cylinder bores, and tooling bores on production or repair equipment. The Type 1 straight-wheel profile makes it compatible with conventional internal grinding machine setups without specialized flanges or adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAluminum oxide abrasive provides reliable cutting action on ferrous and hardened steel workpieces\u003c\/li\u003e\n\u003cli\u003eVitrified bond offers rigidity and consistent wheel form retention during grinding passes\u003c\/li\u003e\n\u003cli\u003eMedium grade with K hardness rating balances wheel life against material removal rate\u003c\/li\u003e\n\u003cli\u003e60 grit delivers a medium surface finish appropriate for semi-finish and finish grinding\u003c\/li\u003e\n\u003cli\u003eType 1 straight-wheel profile fits standard internal grinding spindle setups\u003c\/li\u003e\n\u003cli\u003eRated to 8,120 RPM maximum operating speed\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit wheel for internal grinding machines accepting a Type 1 straight wheel with a 1\/2 inches arbor hole and 4 inches diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInternal grinding wheels must be installed and dressed by a qualified machinist or grinding specialist following ANSI B11.9 and OSHA 1910.215 standards. Always inspect the wheel for cracks or chips before mounting and perform a ring test prior to use. Power down and lock out the grinding machine before mounting or removing the wheel. Never exceed the 8,120 RPM maximum speed rating marked on the wheel.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive Material\u003c\/strong\u003e: Aluminum Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Type\u003c\/strong\u003e: Type 1\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\u003eMaximum RPM\u003c\/strong\u003e: 8,120\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArbor Hole\u003c\/strong\u003e: 1\/2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecess Type\u003c\/strong\u003e: No Recess\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: 0.7 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23131503\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: 66243529532\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NORTON","offers":[{"title":"Default Title","offer_id":51540443758898,"sku":"66243529532","price":51.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a6a284a30fb990b499d8e9d15ebc2bb9.jpg?v=1785855355","url":"https:\/\/voomisupply.com\/products\/norton-66243529532-internal-grinding-wheel-60-grit","provider":"Voomi Supply","version":"1.0","type":"link"}