{"product_id":"carmex-sir0750p22-indexable-threading-toolholder","title":"Carmex SIR0750P22 Indexable Threading Toolholder","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CARMEX SIR0750P22 is an indexable threading toolholder designed for internal, right-hand threading operations. It features a 0.75 x 0.75 inch square shank and an overall length of 7 inches, making it suited for boring bar setups in CNC lathes and manual turning centers. The toolholder accepts 22IR series inserts, secured via a screw-clamping method for reliable insert retention under cutting loads. With a minimum bore diameter of 0.9 inches and a neck diameter of 0.75 inches, this holder provides the clearance geometry required for internal thread cutting in tight-bore applications. Installation and setup are handled by machinists and toolroom technicians.\u003c\/p\u003e\n\u003cp\u003eThis toolholder is intended for internal threading applications in metalworking environments, including job shops, production machine shops, and toolrooms. The SIR series geometry is commonly used on CNC turning centers and manual lathes where precision internal threads must be cut in bored workpieces. The right-hand cut orientation suits standard spindle-forward operations. No coolant-through capability is included in this configuration, making it appropriate for dry or flood-coolant external setups. The 0.9 inch back-of-bar to cutting edge and center-to-cutting-edge dimension both measure 0.9 inches, supporting consistent thread depth control.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eInternal, right-hand threading geometry in the SIR toolholder style\u003c\/li\u003e\n  \u003cli\u003eAccepts 22IR indexable inserts with a 0.5 inch inscribed circle\u003c\/li\u003e\n  \u003cli\u003eScrew-clamp insert holding method for secure, repeatable insert positioning\u003c\/li\u003e\n  \u003cli\u003e0.75 x 0.75 inch shank fits standard square-shank boring bar pockets\u003c\/li\u003e\n  \u003cli\u003e7 inch overall length provides reach for deeper bore threading setups\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through passages; compatible with external flood coolant delivery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 22IR series indexable threading inserts with a 0.5 inch inscribed circle. Fits standard 0.75 x 0.75 inch square-shank toolholder pockets on CNC turning centers and manual lathes configured for internal threading operations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and setup are performed by qualified machinists or toolroom technicians familiar with indexable tooling systems. Ensure the machine spindle is fully stopped and the lathe is locked out before changing inserts or mounting the toolholder. Torque the insert-clamping screw to the insert manufacturer's specification using the appropriate Torx or hex key. Verify shank seating and tool overhang before taking a trial cut, and confirm bore clearance against the 0.9 inch minimum bore diameter requirement before starting the operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: SI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: SIR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: 22IR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Width\/Diameter\u003c\/strong\u003e: 0.75 inches (3\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 0.75 inches (3\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 0.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDistance Across Flats\u003c\/strong\u003e: 0.669 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Entry Style\u003c\/strong\u003e: Without Coolant\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-use Tool\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.8 pounds\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: CARMEX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SIR0750P22\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CARMEX","offers":[{"title":"Default Title","offer_id":51974170476850,"sku":"SIR0750P22","price":194.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1cef63e393ed2c8085197760a2d671d9.jpg?v=1789976148","url":"https:\/\/voomisupply.com\/products\/carmex-sir0750p22-indexable-threading-toolholder","provider":"Voomi Supply","version":"1.0","type":"link"}