{"product_id":"carmex-sir1500t16-indexable-threading-toolholder","title":"Carmex SIR1500T16 Indexable Threading Toolholder","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CARMEX SIR1500T16 is an indexable threading toolholder designed for internal threading operations on CNC lathes and turning centers. It accepts 16IR inserts held by a screw-clamp method and is configured for right-hand cutting. The shank measures 1.5 inches wide by 1.5 inches tall, with an overall length of 12 inches. A minimum bore diameter of 1.65 inches defines the smallest bore this holder can reach. The toolholder belongs to CARMEX's SIR series and operates without through-coolant, making it suited for standard dry or flood-coolant setups.\u003c\/p\u003e\u003cp\u003eThis toolholder is used in internal threading applications on manual and CNC turning equipment in both production and job-shop environments. It is installed by machinists and toolroom technicians when cutting internal threads in bores 1.65 inches and larger. The back-of-bar to cutting edge distance and center-to-cutting-edge distance are both 0.9 inches, which determines tool reach and positioning within the bore. The neck diameter of 1.5 inches and a distance across flats of 1.25 inches allow secure clamping in standard boring bar holders and quick-change tooling systems.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eInternal, right-hand threading configuration in the SIR series\u003c\/li\u003e\n\u003cli\u003eAccepts 16IR inserts with a 3\/8-inch inscribed circle, secured by screw clamp\u003c\/li\u003e\n\u003cli\u003e1.5 x 1.5 inch shank cross-section, 12 inches overall length\u003c\/li\u003e\n\u003cli\u003eMinimum bore diameter of 1.65 inches for deep internal thread access\u003c\/li\u003e\n\u003cli\u003eBack-of-bar to cutting edge and center-to-cutting-edge distance of 0.9 inches\u003c\/li\u003e\n\u003cli\u003eNo through-coolant design; compatible with external flood-coolant application\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 16IR threading inserts with a 3\/8-inch inscribed circle. Fits standard boring bar holders and quick-change toolpost systems that accept a 1.5 x 1.5 inch shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis toolholder is installed by qualified machinists on CNC or manual lathes. Power down and engage the machine lockout before mounting or changing the toolholder. Ensure the shank is fully seated and clamped to the manufacturer-specified setup before indexing or replacing the 16IR insert. Verify minimum bore clearance of 1.65 inches before inserting the bar into the workpiece.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 16IR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 3\/8 inch\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: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 1.65 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDistance Across Flats\u003c\/strong\u003e: 1.25 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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 5.52 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: CARMEX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: SIR1500T16\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CARMEX","offers":[{"title":"Default Title","offer_id":52028354953522,"sku":"SIR1500T16","price":430.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a0d0edcc920bdae9aae17a740154de23.jpg?v=1790017763","url":"https:\/\/voomisupply.com\/products\/carmex-sir1500t16-indexable-threading-toolholder","provider":"Voomi Supply","version":"1.0","type":"link"}