{"product_id":"kennametal-1013378-end-mill-holder-cat40-7-8-inch","title":"Kennametal 1013378 End Mill Holder CAT40 7\/8 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1013378 is a CAT40 taper shank end mill holder designed for use on CNC machining centers equipped with CAT40 spindles. The holder accepts a 7\/8 inch bore and provides a 1.75 inch projection from the gauge line to the tool nose, allowing for controlled reach in tight-clearance applications. A through-coolant design routes coolant directly to the cutting zone, supporting extended tool life and chip evacuation during high-speed milling operations. The holder is balanced to 12,000 RPM and features a 5\/8-11 drawbar thread. It weighs 2.38 pounds and is sold individually. Machining centers, tool crib technicians, and CNC setup personnel are the primary users of this holder.\u003c\/p\u003e\u003cp\u003eThis end mill holder is suited for vertical and horizontal CNC machining centers running CAT40 tooling systems in both production and job-shop environments. The 1.75 inch projection and 1-7\/8 inch nose diameter make it appropriate for standard end mill lengths in face milling, slotting, and profiling operations. The through-coolant feature makes it particularly useful in applications involving deep pockets, hard materials, or high material removal rates where directed coolant flow is required for thermal management and chip control.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCAT40 taper shank for direct compatibility with CAT40 spindle interfaces\u003c\/li\u003e\n\u003cli\u003e7\/8 inch bore diameter accepts standard 7\/8 inch shank end mills\u003c\/li\u003e\n\u003cli\u003eThrough-coolant design routes fluid directly to the cutting tool via through-spindle coolant delivery\u003c\/li\u003e\n\u003cli\u003eBalanced to 12,000 RPM for stable high-speed operation\u003c\/li\u003e\n\u003cli\u003e1.75 inch projection supports controlled tool reach with minimal overhang\u003c\/li\u003e\n\u003cli\u003e5\/8-11 drawbar thread matches standard CAT40 machine spindle retention\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with CAT40 spindle tooling systems on CNC machining centers equipped with through-spindle coolant capability and a 5\/8-11 drawbar. Accepts 7\/8 inch shank cutting tools.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed by qualified CNC tooling or machine setup personnel with the spindle fully stopped and machine power isolated per site lockout\/tagout procedures. Use the appropriate pull stud and torque the drawbar to the machine manufacturer's specification — do not estimate drawbar retention by feel. Verify through-coolant passages are clear before use and confirm the holder seats fully in the spindle taper before engaging the retention mechanism.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: CAT40 Taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 7\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 1-7\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.437 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClamping Depth\u003c\/strong\u003e: 2.27 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: 5\/8-11\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: 2.38 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1013378\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51727132131634,"sku":"1013378","price":190.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2bfa8eb44e524b511b554fe8d54c54d6.jpg?v=1788673852","url":"https:\/\/voomisupply.com\/products\/kennametal-1013378-end-mill-holder-cat40-7-8-inch","provider":"Voomi Supply","version":"1.0","type":"link"}