{"product_id":"accupro-775022-cat40-end-mill-holder-7-16-in-through-coolant","title":"Accupro 775022 CAT40 End Mill Holder 7\/16 in Through Coolant","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 775022 is a CAT40 taper shank end mill holder designed for CNC machining centers requiring precise tool retention and through-coolant delivery. The holder accepts a 7\/16 inch bore and provides 4 inches of projection from the gauge line, giving operators clearance for a wide range of milling operations. Total Indicated Runout (TIR) is rated at 0.0002 inches, supporting tight-tolerance work where tool concentricity directly affects surface finish and tool life. Balanced to 30,000 RPM, this holder suits high-speed machining applications in both production and job-shop environments.\u003c\/p\u003e\n\u003cp\u003eThis holder is used in vertical and horizontal machining centers equipped with CAT40 spindles. The 5\/8-11 drawbar thread is the standard for CAT40 tooling, making this a direct fit for most domestic CNC machines running that taper standard. Through-coolant capability is supported via both through-spindle and DIN flange coolant paths, allowing directed coolant flow to the cutting edge for improved chip evacuation and thermal control in deep-pocket or high-feed milling. Machinists and CNC setup technicians are the primary installers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCAT40 taper shank with 5\/8-11 drawbar thread for standard domestic CNC spindle compatibility\u003c\/li\u003e\n  \u003cli\u003e7\/16 inch bore diameter accepts common end mill shank sizes\u003c\/li\u003e\n  \u003cli\u003e4 inch projection provides clearance for extended-reach milling operations\u003c\/li\u003e\n  \u003cli\u003eTIR of 0.0002 inches supports tight-tolerance and finish milling\u003c\/li\u003e\n  \u003cli\u003eBalanced to 30,000 RPM for high-speed machining center use\u003c\/li\u003e\n  \u003cli\u003eThrough-spindle and DIN flange coolant delivery for directed cutting-zone cooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for CNC machining centers with CAT40 taper spindles and 5\/8-11 drawbar thread. Compatible with end mills having a 7\/16 inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician with the spindle powered down and the machine placed in an appropriate lockout\/tagout state. Use a CAT40-rated toolsetter or torque wrench and follow the machine tool manufacturer's drawbar torque guidelines. Verify TIR with a dial test indicator after clamping before running the spindle. Ensure the through-coolant path is clear and the coolant supply is matched to the holder's DIN flange or through-spindle configuration before engaging coolant flow.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: CAT40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 35.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 4 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 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\u003eBalanced To\u003c\/strong\u003e: 30,000 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 775022\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51730394874162,"sku":"775022","price":115.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4abda079f02f70d6e51ca9fdd6a417af.jpg?v=1788716689","url":"https:\/\/voomisupply.com\/products\/accupro-775022-cat40-end-mill-holder-7-16-in-through-coolant","provider":"Voomi Supply","version":"1.0","type":"link"}