{"product_id":"hertel-htdcmx2151420cd-pcd-turning-insert-0-25-in","title":"Hertel HTDCMX2151420CD Pcd Turning Insert 0.25 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL HTDCMX2151420CD is a Polycrystalline Diamond (PCD) turning insert designed for precision machining of non-ferrous metals, composites, and abrasive materials. Manufactured in the HT-DCMX insert style with a diamond (D) shape, this insert features a 0.25 inch (6.35 mm) inscribed circle, a corner radius of 0.0156 inches, and an uncoated PCD cutting edge. Grade HT420CD delivers the extreme hardness and wear resistance characteristic of PCD tooling, making it suited for high-speed finishing and semi-finishing passes where tool life and surface finish consistency are critical. Machinists and CNC operators in production turning environments install this insert into compatible toolholders using the screw-clamp holding method specified by the DCMX style.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for turning operations on materials such as aluminum alloys, copper, brass, reinforced plastics, carbon fiber composites, and other abrasive non-ferrous workpieces. The diamond insert shape with a C clearance angle and M tolerance code makes it well suited for medium to light finishing cuts in both OD turning and profiling applications. Chip breaker code X provides chip control geometry appropriate for the insert geometry. It is sold individually and is a direct fit for DCMX-style screw-clamp toolholders designed for the 21.51 insert size code.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePolycrystalline Diamond (PCD) insert material for superior wear resistance in non-ferrous and abrasive materials\u003c\/li\u003e\n  \u003cli\u003e0.25 inch inscribed circle with 0.0156 inch corner radius for precise edge geometry\u003c\/li\u003e\n  \u003cli\u003eUncoated PCD cutting edge — no coating needed due to inherent PCD hardness\u003c\/li\u003e\n  \u003cli\u003eScrew-clamp insert holding method (HT-DCMX style) for secure, repeatable seating\u003c\/li\u003e\n  \u003cli\u003eDiamond insert shape (Shape Code D) suitable for OD turning and contour profiling\u003c\/li\u003e\n  \u003cli\u003eMaterial Grade C2 with X chip breaker geometry for controlled chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit insert for DCMX-style screw-clamp turning toolholders accepting the 21.51 insert size code with a diamond (D) shape and C clearance designation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC tooling technician. Ensure the machine spindle is fully stopped and the toolholder is secured in the turret before seating or removing the insert. Use the appropriate Torx or hex key for the clamp screw — do not overtighten, as PCD inserts are brittle and susceptible to edge chipping from improper clamping. Verify insert seating and shim condition before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: HT-DCMX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond (Shape Code D)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Polycrystalline Diamond (PCD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HT420CD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.25 inches (6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0156 inches (1\/64 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 0.0940 inches (3\/32 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1730 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: X\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 21.51\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HTDCMX2151420CD\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728722886962,"sku":"HTDCMX2151420CD","price":52.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4a633f36e51ce52b760390c523937e60.jpg?v=1788695491","url":"https:\/\/voomisupply.com\/products\/hertel-htdcmx2151420cd-pcd-turning-insert-0-25-in","provider":"Voomi Supply","version":"1.0","type":"link"}