{"product_id":"sandvik-coromant-5721756-indexable-boring-bar-steel","title":"Sandvik Coromant 5721756 Indexable Boring Bar Steel","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5721756 is a steel indexable boring bar from the CoroTurn 111 series, designed for precision internal boring and turning operations on CNC lathes and machining centers. It features a 3\/8 inch shank diameter and a minimum bore diameter of 0.4803 inches (12.20 mm), making it suited for small-bore internal machining work. The toolholder uses screw clamping to secure a single CPMT 21.51 insert, delivering a positive rake angle of 4 degrees and a 4-degree lead angle. Coolant-through capability is supported, helping to manage chip evacuation and heat in demanding cutting conditions. Machinists and CNC operators in production shops and job shops are the typical end users.\u003c\/p\u003e\n\u003cp\u003eThis boring bar is used in both boring and turning applications, functioning as a multi-use toolholder in those operations. The A-SCLP toolholder style and right-hand cut orientation suit standard lathe setups where internal diameter finishing or roughing is required. The 6-inch overall length provides adequate reach for many common bore depths while maintaining rigidity at the 3\/8 inch shank size. The center-to-cutting-edge distance is 0.25 inches (6.35 mm), and the back-of-bar-to-cutting-edge measurement matches the 6-inch overall length at 152.40 mm.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCoroTurn 111 series toolholder with A-SCLP style designation\u003c\/li\u003e\n  \u003cli\u003eMinimum bore diameter of 0.4803 inches (12.20 mm) for small-bore internal work\u003c\/li\u003e\n  \u003cli\u003eScrew clamping insert retention with positive rake geometry at 4-degree rake angle\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design for improved chip control and thermal management\u003c\/li\u003e\n  \u003cli\u003eMulti-use capability supporting both boring and turning operations\u003c\/li\u003e\n  \u003cli\u003eSteel construction with 6-inch overall length and 3\/8 inch shank diameter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned to accept CPMT 21.51 inserts with a 1\/4 inch inscribed circle. Uses one insert per toolholder. Compatible with standard 3\/8 inch shank tooling setups on CNC lathes and boring machines configured for right-hand cutting.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician with the machine powered down and in a safe lockout-tagout state before toolholder changes. Verify shank bore and clamping mechanism compatibility with the turret or toolpost before mounting. Use the correct torque driver for the screw clamp to avoid insert seat damage. Inspect insert seating and cutting edge condition before resuming operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.4803 inches (12.20 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (9.53 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches (152.40 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLead Angle\u003c\/strong\u003e: 4 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 4 degrees positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand of Cut\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: CPMT 21.51\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 1\/4 inch (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3\/32 inch (0.0938 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 1\/4 inch (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw Clamping\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: A-SCLP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroTurn 111\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Use Application\u003c\/strong\u003e: Boring and Turning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Inserts\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.13 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: SANDVIK COROMANT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5721756\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51727230468402,"sku":"5721756","price":265.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/23a701ff8ba92d104a0c7620a8c1433e.jpg?v=1788675063","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5721756-indexable-boring-bar-steel","provider":"Voomi Supply","version":"1.0","type":"link"}