{"product_id":"accupro-778986-boring-head-cat40-threaded-mount","title":"Accupro 778986 Boring Head CAT40 Threaded Mount","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 778986 is a taper shank boring head designed for precision boring operations on CNC machining centers. It features a CAT40 taper shank with a 7\/8-20 threaded mount, providing a rigid, repeatable connection to the spindle. The projection measures 1.75 inches, positioning the boring head at the correct working distance from the spindle face. This toolholder is installed by machinists and CNC operators in production and job-shop environments where accurate bore sizing is required. The threaded mount design allows secure attachment of a boring head body, supporting fine diameter adjustments during setup.\u003c\/p\u003e\u003cp\u003eThis boring head shank is suited for use on vertical and horizontal machining centers equipped with CAT40 spindle tapers. It is appropriate for both roughing and finish boring passes in ferrous and non-ferrous materials. Typical applications include enlarging, finishing, and truing bored holes to close tolerances in workholding fixtures, housings, and mechanical components. The 1.75-inch projection provides clearance for standard boring head configurations in typical VMC and HMC setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCAT40 taper shank for use with CAT40-equipped machining centers\u003c\/li\u003e\n\u003cli\u003e7\/8-20 threaded mount for secure boring head attachment\u003c\/li\u003e\n\u003cli\u003e1.75-inch projection for standard boring head reach\u003c\/li\u003e\n\u003cli\u003eNo coolant-through design  -  suited for external coolant delivery setups\u003c\/li\u003e\n\u003cli\u003eCompact 2 x 2 inch cross-section for reduced interference in tight setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or new-installation taper shank for machining centers with CAT40 spindle interfaces and boring heads with a 7\/8-20 threaded mount connection.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully powered down and locked out before mounting or removing the taper shank. Clean the CAT40 taper and spindle bore thoroughly before seating to prevent fretting and runout. Torque the drawbar to the machining center manufacturer's specification and verify runout with a dial indicator before committing to a boring pass.\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\u003eMount Type\u003c\/strong\u003e: Threaded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreaded Mount Size\u003c\/strong\u003e: 7\/8-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProjection\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.7 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 778986\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51744027410738,"sku":"778986","price":166.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ae3f82c9ea3639ee71e7fcde36228ad8.jpg?v=1788853152","url":"https:\/\/voomisupply.com\/products\/accupro-778986-boring-head-cat40-threaded-mount","provider":"Voomi Supply","version":"1.0","type":"link"}