{"product_id":"accupro-775004-end-mill-holder-cat40-3-16-inch-through-coolant","title":"Accupro 775004 End Mill Holder CAT40 3\/16 Inch Through Coolant","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 775004 is a CAT40 taper shank end mill holder designed for precision tool holding in CNC machining centers. It accepts a 3\/16 inch bore and features through-coolant capability, directing coolant through the spindle and DIN flange directly to the cutting zone. With a 2.5 inch projection and a 3\/4 inch nose diameter, this holder positions the tool at a consistent working distance from the spindle face. A TIR of 0.0002 inches ensures the concentricity required for finishing passes and tight-tolerance work. The drawbar thread is 5\/8-11, standard for CAT40 tooling. Machinists and CNC setup technicians install this holder in vertical and horizontal machining centers.\u003c\/p\u003e\u003cp\u003eThis end mill holder is suited for production and job-shop environments running CAT40 spindles. The through-coolant design supports high-speed operations where flood coolant alone is insufficient to reach the cutting edge. It is balanced to 30,000 RPM, making it appropriate for high-speed machining applications including aluminum, steel, and other materials where spindle speeds exceed conventional ranges. The 3\/16 inch bore targets smaller diameter end mills used in profiling, slotting, and contouring operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCAT40 taper shank for direct spindle mounting on CAT40 machining centers\u003c\/li\u003e\n\u003cli\u003e3\/16 inch bore diameter for small-diameter end mill tooling\u003c\/li\u003e\n\u003cli\u003eThrough-coolant compatible via through-spindle and DIN flange coolant delivery\u003c\/li\u003e\n\u003cli\u003eTIR of 0.0002 inches for high-concentricity tool holding\u003c\/li\u003e\n\u003cli\u003eBalanced to 30,000 RPM for high-speed machining applications\u003c\/li\u003e\n\u003cli\u003e5\/8-11 drawbar thread, standard for CAT40 tooling systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with CAT40 spindle machining centers that support through-spindle coolant and DIN flange coolant delivery. Compatible with end mills having a 3\/16 inch shank diameter and a standard 5\/8-11 drawbar connection.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified CNC machinist or tooling technician with the spindle fully powered down and locked out per the machine manufacturer's lockout\/tagout procedure. Use the appropriate spanner wrench and toolholder tightening fixture to torque the end mill set screw without side-loading the holder. Confirm through-coolant passages are clear before assembly. Verify TIR at the tool tip with a dial test indicator after installation to confirm proper seating.\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: CAT40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNose Diameter\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 2.5 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 RPM\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\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: 775004\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51750159155506,"sku":"775004","price":164.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ab15def3a4e93a3cccaaa7288da81118.jpg?v=1788913915","url":"https:\/\/voomisupply.com\/products\/accupro-775004-end-mill-holder-cat40-3-16-inch-through-coolant","provider":"Voomi Supply","version":"1.0","type":"link"}