{"product_id":"sandvik-coromant-5731613-indexable-boring-bar-left-hand","title":"Sandvik Coromant 5731613 Indexable Boring Bar Left Hand","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 5731613 is a solid carbide indexable boring bar from the CoroTurn 107 series, designed for internal boring and turning operations on small-diameter bores. The toolholder style is E-STFC with a left-hand cut orientation and a neutral rake angle of 0 degrees. It accepts a single TCMT 1.21.20 insert secured by screw clamping, providing reliable insert retention during interrupted or continuous cuts. The 1\/4-inch shank diameter and 4-inch overall length make this bar well suited for tight-access bore applications where rigidity and dimensional control are critical. Coolant-through capability supports chip evacuation and thermal management at the cutting zone.\u003c\/p\u003e\u003cp\u003eThis boring bar is used in CNC lathes and turning centers performing internal diameter operations on small bores with a minimum bore diameter of 0.3425 inches (8.70 mm). Its multi-use design supports both boring and turning applications. The CoroTurn 107 series is commonly applied in precision component manufacturing, aerospace, medical, and general metalworking environments where consistent bore finish and dimensional accuracy are required. A licensed machinist or CNC operator typically handles setup and operation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMinimum bore diameter of 0.3425 inches (8.70 mm) for tight-bore access\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for superior rigidity and vibration resistance in small-diameter bars\u003c\/li\u003e\n\u003cli\u003eScrew clamping insert retention with TCMT 1.21.20 insert compatibility\u003c\/li\u003e\n\u003cli\u003eCoolant-through design for improved chip evacuation and tool life\u003c\/li\u003e\n\u003cli\u003eNeutral rake angle supports stable cutting across a range of materials\u003c\/li\u003e\n\u003cli\u003eMulti-use application: boring and turning from a single toolholder\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with TCMT 1.21.20 inserts. Part of the SANDVIK COROMANT CoroTurn 107 series. Compatible with 1\/4-inch shank tool blocks and boring bar holders on CNC lathes and turning centers configured for that shank size.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before mounting or removing the toolholder. Ensure the shank bore and clamping surfaces are clean and free of chips before seating the bar. Do not exceed the insert manufacturer's recommended cutting parameters for the TCMT 1.21.20 insert grade selected.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.3425 inches (8.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches (101.60 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 4 inches (101.60 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.172 inches (4.37 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 0.1563 inches (3.97 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.075 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: TCMT 1.21.20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw Clamping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: E-STFC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroTurn 107\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Use Application\u003c\/strong\u003e: Boring, Turning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Inserts\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241601\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: SANDVIK COROMANT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5731613\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51739361542450,"sku":"5731613","price":513.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/65b3a07ffd100f8e041d8c5e5f6b294f.jpg?v=1788813585","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5731613-indexable-boring-bar-left-hand","provider":"Voomi Supply","version":"1.0","type":"link"}