{"product_id":"tru-maxx-66253255649-surface-grinding-wheel-120-grit","title":"Tru-maxx 66253255649 Surface Grinding Wheel 120 Grit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe TRU-MAXX 66253255649 is a Type 1 straight surface grinding wheel engineered for precision stock removal and fine finishing on ferrous metals. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent cutting action and thermal stability under sustained grinding pressure. At 120 grit with a J hardness code and medium hardness rating, this wheel is suited for fine-grade surface grinding where dimensional accuracy and surface finish are priorities. It spins to a maximum of 3,600 RPM and weighs 1 pound. Machinists and tool-and-die technicians use this wheel on surface grinders in job shop and production environments.\u003c\/p\u003e\n\u003cp\u003eThis wheel fits standard surface grinders and compatible bench or pedestal grinding setups accepting a 7-inch diameter, 1\/4-inch thick, Type 1 straight wheel with a 1-1\/4-inch arbor hole. The aluminum oxide grain and vitrified bond make it appropriate for grinding hardened steels, tool steels, and similar ferrous workpieces. The fine 120-grit rating is well suited to finish passes where low stock removal and tight surface tolerances are required. The semi-friable grain structure supports controlled wheel breakdown, helping maintain a consistent cutting edge throughout the wheel's life.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eType 1 straight wheel profile — no recess, standard flat face geometry\u003c\/li\u003e\n  \u003cli\u003e120 grit aluminum oxide abrasive with semi-friable grain structure for controlled breakdown\u003c\/li\u003e\n  \u003cli\u003eVitrified bond for thermal stability and rigidity during surface grinding\u003c\/li\u003e\n  \u003cli\u003eJ hardness (medium) balances wheel life with free-cutting action on hardened steels\u003c\/li\u003e\n  \u003cli\u003eGrain structure rating of 6 — medium-open spacing supports chip clearance on fine finishes\u003c\/li\u003e\n  \u003cli\u003eRated to 3,600 RPM maximum operating speed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for Type 1 straight surface grinding wheels with a 7-inch diameter, 1\/4-inch thickness, and 1-1\/4-inch arbor hole on compatible surface grinders and bench grinders.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eWheel mounting and dressing should be performed by a qualified machinist or grinding technician. Before mounting, inspect the wheel for cracks using a ring test — do not install a cracked or chipped wheel. Ensure the spindle speed of the machine does not exceed the 3,600 RPM maximum rating marked on the wheel. Follow ANSI B11.9 and applicable shop safety standards when mounting, guarding, and operating grinding wheels.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Type\u003c\/strong\u003e: Type 1 (Straight)\u003c\/li\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: 120\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGrade (Hardness Code)\u003c\/strong\u003e: J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardness Rating\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\u003eGrain Structure\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFriability\u003c\/strong\u003e: Semi-Friable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePorosity\u003c\/strong\u003e: Non-Porous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Color\u003c\/strong\u003e: Pink\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRecess Type\u003c\/strong\u003e: No Recess\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Size\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum RPM\u003c\/strong\u003e: 3,600\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification Code\u003c\/strong\u003e: 29A120J6V31\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: TRU-MAXX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 66253255649\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TRU-MAXX","offers":[{"title":"Default Title","offer_id":51733696414002,"sku":"66253255649","price":28.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3b18e650cee33e1b02bca353a1768b31.jpg?v=1788758386","url":"https:\/\/voomisupply.com\/products\/tru-maxx-66253255649-surface-grinding-wheel-120-grit","provider":"Voomi Supply","version":"1.0","type":"link"}