{"product_id":"collis-tool-68047-end-mill-holder-nmtb40-1-1-4-inch-bore","title":"Collis Tool 68047 End Mill Holder NMTB40 1-1\/4 Inch Bore","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe COLLIS TOOL 68047 is an end mill holder designed for milling machines equipped with an NMTB40 taper spindle. It accepts end mills with a 1-1\/4 inch bore and delivers a projection of 2.9063 inches from the spindle face, positioning the cutting tool at a consistent, repeatable distance from the machine. The nose diameter measures 2-3\/8 inches. At 3.41 pounds, the holder is built for rigid, vibration-resistant clamping during face milling, slotting, and peripheral milling operations. Installation and removal are handled by a 5\/8-11 drawbar thread, which is standard on NMTB40 tooling setups.\u003c\/p\u003e\u003cp\u003eThis end mill holder is suited for manual and CNC-capable vertical milling machines using the NMTB40 taper standard. It is typically used in job shops, toolrooms, and production environments where end mills up to 1-1\/4 inch shank diameter are run in steel, aluminum, cast iron, and similar materials. The holder does not include through-coolant capability, making it appropriate for flood-coolant or dry-machining applications where internal coolant delivery is not required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNMTB40 taper shank for direct spindle mounting on compatible milling machines\u003c\/li\u003e\n\u003cli\u003e1-1\/4 inch bore accommodates standard end mill shank sizes\u003c\/li\u003e\n\u003cli\u003e2.9063 inch projection provides consistent tool-to-spindle standout\u003c\/li\u003e\n\u003cli\u003e2-3\/8 inch nose diameter for stable clamping and reduced runout\u003c\/li\u003e\n\u003cli\u003e5\/8-11 drawbar thread matches standard NMTB40 drawbar requirements\u003c\/li\u003e\n\u003cli\u003eNo through-coolant port  -  suited for flood-coolant or dry-cut setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for milling machines with an NMTB40 taper spindle accepting a 5\/8-11 drawbar thread.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or toolroom technician. Power down and lock out the milling machine before changing tooling. Torque the drawbar by hand first, then snug with a wrench while holding the spindle brake  -  do not over-tighten, as this can damage the spindle or taper seat. Inspect the taper bore and spindle socket for chips or contamination before seating the holder.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Taper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaper Size\u003c\/strong\u003e: NMTB40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Diameter\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 2-3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 2.9063 inches (2-29\/32 inches)\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\u003eThrough Coolant\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.41 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: COLLIS TOOL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 68047\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"COLLIS TOOL","offers":[{"title":"Default Title","offer_id":67915500552498,"sku":"68047","price":233.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/25328bc79ebf87743c433f5cb716dc43.jpg?v=1791253852","url":"https:\/\/voomisupply.com\/products\/collis-tool-68047-end-mill-holder-nmtb40-1-1-4-inch-bore","provider":"Voomi Supply","version":"1.0","type":"link"}