{"product_id":"fresa-helicoidal-desbaste-vhm-z3-d16-i55-l110-s16-rh-negativo-nadia","title":"Spiral router bit Roughing VHM Z3 D16 I55 L110 S16 RH negative NaDia","description":"\u003ch1\u003eThree-fluted roughing spiral end mill VHM from the SF51 series\u0026nbsp;\u003c\/h1\u003e\u003cp\u003eIndex: SF51.16.055.110.16XR\u003c\/p\u003e\u003cp\u003eIndustrial spiral end mill made from a solid carbide (VHM) from the \u003cstrong\u003eSF51\u003c\/strong\u003e\u0026nbsp; series with a negative design (chip ejection downwards). Designed for efficient rough machining, parting, and grooving on CNC machining centres and overhead spindle milling machines. The left-handed helical design (negative) presses the material against the worktable, eliminating the risk of tear-out on the upper edge of the workpiece. Three spiral blades with a profiled chip breaker reduce cutting resistance, lower spindle load, and effectively dampen vibrations during intense machining. The ground shank in accuracy class H6 protects the drive system and ensures high stability of the process.\u003c\/p\u003e\u003ch3\u003eKey technical parameters and properties:\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eThree-flute roughing design Z3 (negative):\u003c\/strong\u003e Dedicated roughing profile with downward chip ejection presses the workpiece against the table and ensures a perfectly finished, clean upper edge.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003ePremium class solid carbide (VHM):\u003c\/strong\u003e Rigid monolithic design minimises tool deflection under load and guarantees high mechanical durability.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eGeometry with chip breaker:\u003c\/strong\u003e Divides the material being machined into smaller pieces, reducing cutting resistance and stabilising operation.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eOptimised shank roughness:\u003c\/strong\u003e The shank surface is characterised by low roughness (Ra ≤ 0.3 µm), preventing slippage in the holder and protecting the spindle taper from wear.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eDynamic balancing in class G2.5:\u003c\/strong\u003e Static-dynamic balancing in accordance with ISO\/EN standard (class G2.5) eliminates vibrations at maximum rotational speeds.\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eAdvanced protective NaDia coating (series .XR):\u003c\/strong\u003e Black PVD coating with extreme hardness of 3650 HV and very low friction coefficient (0.01–0.05) applied at low temperatures. Drastically increases the edge's wear resistance, prevents material sticking, and significantly extends tool life during the machining of wood, laminates, plywood, plastics, and aluminium.\u0026nbsp;\u0026nbsp;\u003c\/li\u003e\u003c\/ul\u003e","brand":"ITA TOOLS","offers":[{"title":"Default Title","offer_id":57445162287444,"sku":"SF51.16.055.110.16XR","price":149.6,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1080\/4183\/0740\/files\/SF51.16.055.110.16XR_SF51.16.055.110.16XR-111.jpg?v=1791283926","url":"https:\/\/es.ita.tools\/en\/products\/fresa-helicoidal-desbaste-vhm-z3-d16-i55-l110-s16-rh-negativo-nadia","provider":"ITA TOOLS","version":"1.0","type":"link"}