{"product_id":"walter-5615075-turning-insert-vcmt221-pf4wsm20-carbide","title":"Walter 5615075 Turning Insert VCMT221-PF4WSM20 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER 5615075 is a solid carbide turning insert engineered for precision finishing operations on stainless steel, superalloys, and titanium. It carries the ANSI designation VCMT221 and ISO designation VCMT110304, with a 35-degree diamond (rhombic) insert shape and a positive rake geometry that reduces cutting forces in difficult-to-machine materials. The WSM20 grade features a multilayer PVD coating combining TiAlN, Al2O3, and ZrCN for thermal resistance and edge integrity. A 1\/64 inch corner radius and honed cutting edge style support tight surface finish requirements. The PF4 chip breaker geometry targets finishing chip control across turning, facing, boring, and back turning applications. Licensed machinists and CNC lathe operators are the primary installers of this insert.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for finishing passes on stainless steel and superalloy or titanium workpieces where controlled chip evacuation and edge stability are critical. The PF4 chip breaker is optimized for light to moderate depths of cut up to 0.1452 inches. The neutral hand orientation makes it compatible with both left- and right-hand toolholders using a screw-clamp holding method. Material grade designations M20, P20, and S20 confirm suitability across ISO material groups M, P, and S, covering stainless steel, carbon and alloy steel, and superalloys or titanium. The insert is also applicable to secondary operations on steel, broadening its utility across mixed-material production environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e35-degree diamond insert shape with positive rake and 7-degree relief angle for reduced cutting forces\u003c\/li\u003e\n  \u003cli\u003eMultilayer PVD coating (TiAlN, Al2O3, ZrCN) for thermal stability on stainless steel and superalloys\u003c\/li\u003e\n  \u003cli\u003ePF4 chip breaker geometry optimized for finishing operations\u003c\/li\u003e\n  \u003cli\u003eHoned cutting edge style with 1\/64 inch corner radius for refined surface finish\u003c\/li\u003e\n  \u003cli\u003eNeutral hand orientation compatible with screw-clamp toolholders\u003c\/li\u003e\n  \u003cli\u003eTwo cutting edges per insert; multi-use for turning, facing, boring, and back turning\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for screw-clamp VCMT-style toolholders accepting a 1\/4 inch inscribed circle insert. Conforms to ANSI and ISO standards (ANSI: VCMT221, ISO: VCMT110304). Primary workpiece materials are stainless steel, superalloys, and titanium (ISO material codes M and S); secondary application covers steel (ISO material code P).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before seating or indexing the insert. Use the correct torque wrench and insert screw specified by the toolholder manufacturer  -  do not over-torque the clamp screw, as carbide inserts are brittle and can fracture. Inspect the insert pocket and seating surface for chips or debris before installing to ensure proper seating and edge geometry.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: VCMT221\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: VCMT110304\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: V - Diamond (Rhombic) 35 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 35 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: WSM20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M20, P20, S20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN, Al2O3, ZrCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD (Multilayer)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: PF4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/4 inch (0.2500 inches \/ 6.35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 1\/8 inch (0.1250 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.4360 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/64 inch (0.0157 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1100 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 0.1452 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 6 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Positive\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\u003eCutting Edge Style\u003c\/strong\u003e: Honed\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 Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Superalloys, Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-Use Application\u003c\/strong\u003e: Turning, Facing, Boring, Back Turning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.00882 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: WALTER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5615075\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":51967015452978,"sku":"5615075","price":340.59,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/77eb226a6237594c556f3c0d84c3f5bc.jpg?v=1789950734","url":"https:\/\/voomisupply.com\/products\/walter-5615075-turning-insert-vcmt221-pf4wsm20-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}