{"product_id":"jacobs-30455dn-mt4-to-mt5-morse-taper-extension-adapter","title":"Jacobs 30455DN MT4 to MT5 Morse Taper Extension Adapter","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe JACOBS 30455DN is a Morse taper extension adapter designed to increase reach in machine tool spindle applications. It accepts an MT4 inside taper and presents an MT5 outside taper, allowing technicians to extend tooling depth without changing the host spindle. The adapter measures 11.81 inches overall length with a body diameter of 1.89 inches and a projection of 5.39 inches. Constructed from alloy steel and hardened and ground throughout, it provides consistent concentricity and surface integrity under repeated use. Machinists and toolroom technicians working with drill presses, lathes, and milling machines install this type of adapter when additional spindle depth is required.\u003c\/p\u003e\u003cp\u003eThis adapter is suited for metalworking and machining operations where an MT4 spindle socket must interface with MT5 tooling or accessories. Typical applications include production drilling, reaming, and boring setups where standard taper reach is insufficient. The extension format makes it appropriate for deep-hole operations or installations requiring increased distance between the spindle face and the cutting tool. It is installed by qualified machine operators and toolroom technicians in both job shop and production environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMT4 inside taper to MT5 outside taper extension configuration\u003c\/li\u003e\n\u003cli\u003e11.81 inches overall length for extended spindle reach\u003c\/li\u003e\n\u003cli\u003e5.39 inch projection for deep-reach tooling applications\u003c\/li\u003e\n\u003cli\u003e1.89 inch body diameter for rigidity under load\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction, hardened and ground throughout for dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with machine tool spindles accepting MT4 inside tapers and tooling or accessories with MT5 shanks.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician with the machine powered down and locked out per applicable LOTO procedures. The taper mating surfaces should be clean and free of chips, oil, or burrs before seating the adapter. Do not force or hammer the adapter into the spindle beyond hand-fit seating. Verify runout with a dial indicator after installation before commencing any cutting operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdapter Type\u003c\/strong\u003e: Morse Taper to Morse Taper Extension\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInside Taper Size\u003c\/strong\u003e: MT4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside Taper Size\u003c\/strong\u003e: MT5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 11.81 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 5.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBody Diameter\u003c\/strong\u003e: 1.89 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardness\u003c\/strong\u003e: Hardened and Ground Throughout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: JACOBS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 30455DN\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JACOBS CHUCK","offers":[{"title":"Default Title","offer_id":67914890150194,"sku":"30455DN","price":257.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/432013f30e30e33a49d4d2d4257a525c_cb1bffeb-5297-4e7e-85e2-1bd2769a557b.jpg?v=1791251475","url":"https:\/\/voomisupply.com\/products\/jacobs-30455dn-mt4-to-mt5-morse-taper-extension-adapter","provider":"Voomi Supply","version":"1.0","type":"link"}