{"product_id":"kennametal-1258017-end-mill-holder-bt30-3-4-inch","title":"Kennametal 1258017 End Mill Holder BT30 3\/4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 1258017 is a BT30 taper shank end mill holder designed for CNC machining centers that require secure tool retention and internal coolant delivery. The holder accepts a 3\/4 inch tool shank diameter and provides 2.36 inches of projection from the spindle face, giving machinists reliable reach for a range of milling applications. Through-spindle coolant is routed directly to the cutting zone, reducing heat buildup and extending tool life. With a clamping depth of 2.22 inches and a drawbar thread size of M12, this holder is engineered for rigid, repeatable setups on BT30-equipped machines balanced to 12,000 RPM.\u003c\/p\u003e\n\u003cp\u003eThis end mill holder suits vertical and horizontal machining centers fitted with a BT30 spindle interface. It is appropriate for production shops, toolrooms, and job shops running moderate-speed milling operations where coolant-through capability is required. The 1-3\/4 inch nose diameter and overall length of 4.27 inches make it a practical choice for face milling, shoulder milling, and general-purpose end milling where controlled coolant flow to the cutting edge matters. Installation and tool changes are performed by licensed machinists or qualified CNC tooling technicians.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eBT30 taper shank for direct spindle mounting on compatible machining centers\u003c\/li\u003e\n  \u003cli\u003e3\/4 inch bore accepts standard end mill shanks of that diameter\u003c\/li\u003e\n  \u003cli\u003eThrough-spindle coolant channel routes fluid directly to the cutter\u003c\/li\u003e\n  \u003cli\u003eBalanced to 12,000 RPM for stable high-speed operation\u003c\/li\u003e\n  \u003cli\u003e2.22 inch clamping depth provides secure tool grip and minimizes runout\u003c\/li\u003e\n  \u003cli\u003eM12 drawbar thread for proper spindle retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style end mill holder for CNC machining centers equipped with a BT30 taper spindle interface and M12 drawbar thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC tooling technician. Always power down and lock out the spindle drive before inserting or removing holders. Confirm that the spindle taper and drawbar thread match BT30 and M12 specifications before installation. Torque the drawbar to the machine manufacturer's specification and verify tool runout with a dial indicator before cutting.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: BT30 Taper\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 1-3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 2.36 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.27 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClamping Depth\u003c\/strong\u003e: 2.22 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThrough Coolant\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Type\u003c\/strong\u003e: Through-Spindle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrawbar Thread Size\u003c\/strong\u003e: M12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBalanced To\u003c\/strong\u003e: 12,000 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.942 pounds\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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1258017\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51727417540914,"sku":"1258017","price":171.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/29f91e11f765bff48ee7215702afac91.jpg?v=1788677656","url":"https:\/\/voomisupply.com\/products\/kennametal-1258017-end-mill-holder-bt30-3-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}