{"product_id":"fresa-a-corona-hssco5-cds-con-rivestimento-in-naco-14-18-22-mm-profondita-di-foratura-30-mm-da-5-pezzi","title":"Bernardo HSSCO5 CDS Core Drill Bit Set in nACO, 14\/18\/22 mm, 30 mm Drilling Depth, 5 Pcs","description":"\u003cp\u003eBernardo HSSCO5 CDS nACO annular cutter, 14\/18\/22 mm, 30 mm drilling depth, 5 pieces is a professional cutting tool available from Krollit, an official Bernardo distributor since 2007.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWith 19 mm Weldon shank\u003c\/li\u003e\n\u003cli\u003eExcellent chip removal\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel\u003c\/li\u003e\n\u003cli\u003eCoated with hard material\u003c\/li\u003e\n\u003cli\u003eHigh wear protection\u003c\/li\u003e\n\u003cli\u003eHigh hardness and adhesion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho uses the HSSCO5 CDS nACO annular cutter, 14\/18\/22 mm, 30 mm drilling depth, 5 pieces and for what\u003c\/h3\u003e\n\u003cp\u003eMechanical workshops and tool laboratories use the HSSCO5 CDS nACO annular cutter, 14\/18\/22 mm, 30 mm drilling depth, 5 pieces for cutting, drilling, or sharpening operations on materials compatible with the tool's geometry.\u003c\/p\u003e\n\u003ch3\u003eIts place in the Bernardo range\u003c\/h3\u003e\n\u003cp\u003eBernardo HSSCO5 CDS nACO annular cutter, 14\/18\/22 mm, 30 mm drilling depth, 5 pieces is part of the Bernardo cutting tools range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performances: to choose the right machine for your use case, you can consult the Bernardo catalog on Krollit or contact customer support for selection assistance.\u003c\/p\u003e\n\u003ch3\u003eKrollit Logistics and Support\u003c\/h3\u003e\n\u003cp\u003eShipping 3-5 business days from Krollit warehouse for spare parts and accessories. Italian-speaking customer support available for technical documentation and compatibility verification with the reference machine. Krollit has been an official distributor since 2007.\u003c\/p\u003e\n\u003ch3\u003eWho is the HSSCO5 CDS nACO annular cutter, 14\/18\/22 mm, 30 mm drilling depth, 5 pieces for\u003c\/h3\u003e\n\u003cp\u003eThe HSSCO5 CDS nACO annular cutter, 14\/18\/22 mm, 30 mm drilling depth, 5 pieces is recommended for the following professional profiles:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical workshops and tool laboratories\u003c\/strong\u003e: cutting and sharpening operations on compatible materials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsers with compatible machines\u003c\/strong\u003e: replacement or original tool for the specified machine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOut-of-specification materials\u003c\/strong\u003e: verify machinable material and tool geometry before use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is an annular cutter used for?\u003c\/summary\u003e\n\u003cp\u003eIt creates large diameter holes in sheet metal and metal, removing only the outer ring and leaving a central core.\u003c\/p\u003e\n\u003cp\u003eAnnular cutters are much more efficient than traditional drill bits for large diameters: they remove only the necessary material, reduce drill strain, and produce cleaner holes.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat steel is it made of?\u003c\/summary\u003e\n\u003cp\u003eMade of HSS-Co5 (5% cobalt high-speed steel), with greater heat resistance and durability on hard steels compared to HSS alone.\u003c\/p\u003e\n\u003cp\u003eThe NaCo (Naco) coating further increases surface hardness (up to 3,000 HV) and wear resistance, doubling the service life on hardened steels.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat machine is it mounted on?\u003c\/summary\u003e\n\u003cp\u003eIt mounts on magnetic drills (core drilling machines) and milling machines with standard Weldon or TCT shanks.\u003c\/p\u003e\n\u003cp\u003eMagnetic drills are the most common choice for annular cutters, thanks to strong magnetic adhesion and controlled feed. Check the shank type before purchasing.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat drilling depth does it achieve?\u003c\/summary\u003e\n\u003cp\u003eBernardo annular cutters are available with 30 mm depth (short version) or 55 mm depth (long version, KBL\/CDL).\u003c\/p\u003e\n\u003cp\u003eFor thicknesses up to 30 mm, the short version is optimal (more rigid). For thicknesses 30-55 mm, the long version is needed. Greater thicknesses require custom-made cutters.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow is it lubricated during processing?\u003c\/summary\u003e\n\u003cp\u003eUse cutting oil or cooling emulsion applied directly to the cutting point. Coolant reduces heat and extends service life.\u003c\/p\u003e\n\u003cp\u003eOn hard steels or high thicknesses, lubrication is essential: without coolant, the cutter overheats, loses sharpness, and can break prematurely. Recommended cutting speed: 20-30 m\/min on mild steel.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50725767971144,"sku":"41-11051","price":211.09,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Fresa-a-corona-HSSCO5-CDS-con-rivestimento-in-nACO-14-18-22-mm-p-extra-big-14181-652.jpg?v=1750413587","url":"https:\/\/www.krollit.com\/products\/fresa-a-corona-hssco5-cds-con-rivestimento-in-naco-14-18-22-mm-profondita-di-foratura-30-mm-da-5-pezzi","provider":"Krollit","version":"1.0","type":"link"}