{"product_id":"accupro-75257105-turning-insert-dcmt21-51-carbide-cvd","title":"Accupro 75257105 Turning Insert DCMT21.51 Carbide Cvd","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 75257105 is a DCMT-style carbide turning insert designed for precision external turning operations on CNC and manual lathes. It carries the ANSI code DCMT21.51 and ISO code DCMT070204, features a 55-degree diamond (rhombic) insert shape, and is finished with a CVD coating in manufacturer grade ACP25M. The insert uses a positive side clearance geometry and a WM+ chip breaker, making it well suited for moderate to high-speed finishing and semi-finishing passes. It is sold individually with a minimum order quantity of 10 units and weighs approximately 0.01 pounds.\u003c\/p\u003e\u003cp\u003eThis insert is intended for turning steel, stainless steel, and cast iron workpieces in production and job-shop environments. The ACP25M grade spans high wear resistance through moderate toughness across P, M, and K ISO material classifications, giving machinists flexibility across a range of workpiece materials. Typical applications include contour turning, profiling, and light interrupted cuts where a sharp, neutral-hand insert with a small corner radius is required for dimensional accuracy.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDCMT diamond insert shape with 55-degree included angle for tight-corner profiling capability\u003c\/li\u003e\n\u003cli\u003eCVD coating on ACP25M carbide grade for extended tool life on steel, stainless steel, and cast iron\u003c\/li\u003e\n\u003cli\u003e0.40 mm (0.0157 inches) corner radius for fine-finish and close-tolerance turning\u003c\/li\u003e\n\u003cli\u003eWM+ chip breaker geometry optimized for moderate to high-speed finishing passes\u003c\/li\u003e\n\u003cli\u003ePositive side clearance and neutral hand for broad toolholder compatibility\u003c\/li\u003e\n\u003cli\u003eScrew-clamping insert holding method for secure, repeatable seating\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for DCMT21.51 and DCMT070204 insert seats on compatible screw-clamp toolholders that accept a 0.25-inch inscribed circle DCMT insert. Confirm toolholder pocket specifications before ordering.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert replacement should be performed by a qualified machinist with the machine spindle fully stopped and all energy sources locked out per facility LOTO procedures. Use the appropriate torx or hex key to the toolholder manufacturer's recommended seating procedure when tightening the clamp screw. Inspect the insert pocket and clamp for wear or damage before seating a new insert. Never overtighten the clamp screw, as this can fracture the carbide substrate.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: DCMT21.51\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: DCMT070204\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: DCMT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: D - Diamond (Rhombic) 55-Degree\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 55 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Positive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: ACP25M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: CVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0157 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 6.35 mm (0.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 2.38 mm (0.0937 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1102 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 3.00 mm (0.1181 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: WM+\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel (P), Stainless Steel (M), Cast Iron (K)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: 75257105\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51729205559602,"sku":"75257105","price":136.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cc3348d203b1fcaf9f5340ad1078ffcf_767872e3-e683-450f-ac7e-8835110f7703.jpg?v=1788701917","url":"https:\/\/voomisupply.com\/products\/accupro-75257105-turning-insert-dcmt21-51-carbide-cvd","provider":"Voomi Supply","version":"1.0","type":"link"}