{"product_id":"accupro-775120-end-mill-holder-cat50-5-8-inch-through-coolant","title":"Accupro 775120 End Mill Holder CAT50 5\/8 Inch Through Coolant","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 775120 is a CAT50 taper shank end mill holder designed for use in CNC machining centers requiring precision tool holding with through-coolant capability. The holder features a 5\/8 inch bore diameter and a 6 inch projection, placing the cutting tool at a controlled distance from the spindle face for clearance in deep-cavity and stepped-workpiece applications. A 1-21\/32 inch nose diameter provides rigid support at the tool interface. The drawbar thread is sized at 1-8, and the holder is balanced to 25,000 RPM, making it suitable for high-speed machining operations. TIR is rated at 0.0002 inch, supporting close-tolerance work in production environments. Machinists and CNC setup technicians are the primary installers.\u003c\/p\u003e\u003cp\u003eThis end mill holder is suited for vertical and horizontal CNC machining centers equipped with CAT50 spindle tapers. The 6 inch projection makes it appropriate for applications where extended reach is needed to avoid spindle interference with fixtures, clamps, or workpiece geometry. Through-spindle and DIN flange coolant delivery is supported, directing coolant directly to the cutting zone for improved chip evacuation and tool life in ferrous and non-ferrous machining. The high RPM balance rating supports use in high-speed finishing and semi-finishing passes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCAT50 taper shank for compatibility with standard CAT50 spindle interfaces\u003c\/li\u003e\n\u003cli\u003e5\/8 inch bore diameter accommodates standard end mill shank sizes\u003c\/li\u003e\n\u003cli\u003e6 inch projection for extended reach in deep-cavity and fixtured setups\u003c\/li\u003e\n\u003cli\u003eThrough-coolant capable via through-spindle and DIN flange delivery\u003c\/li\u003e\n\u003cli\u003eTIR of 0.0002 inch for precision tool holding in close-tolerance applications\u003c\/li\u003e\n\u003cli\u003eBalanced to 25,000 RPM for high-speed machining operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers with CAT50 taper spindles and a 1-8 drawbar thread configuration.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified CNC machinist or toolroom technician with the spindle fully stopped and the machine in a locked-out state per facility lockout\/tagout procedures. Ensure the taper surfaces on both the holder and spindle are clean and free of chips or burrs before seating. Torque the drawbar to the machining center manufacturer's specification. Verify TIR at the tool shank with a dial indicator before beginning any cutting operation.\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: CAT50\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 1-21\/32 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 6 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 and DIN Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTIR\u003c\/strong\u003e: 0.0002 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawbar Thread Size\u003c\/strong\u003e: 1-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced To RPM\u003c\/strong\u003e: 25,000 RPM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 775120\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51753986785586,"sku":"775120","price":174.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2889b4cfc1c8e73004406a549ce1bc55.jpg?v=1788942584","url":"https:\/\/voomisupply.com\/products\/accupro-775120-end-mill-holder-cat50-5-8-inch-through-coolant","provider":"Voomi Supply","version":"1.0","type":"link"}