{"product_id":"set-di-punte-elicoidali-da-41-pezzi-41-1018","title":"Bernardo 41-piece HSS drill bit set","description":"\u003cp\u003eThe Bernardo 41-piece twist drill bit set is a cutting tool for professional use available at Krollit, an official Bernardo distributor since 2007.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e6 – 10 mm, increasing by 0.1 mm\u003c\/li\u003e\n\u003cli\u003eIn plastic case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho uses the 41-piece twist drill bit set and for what\u003c\/h3\u003e\n\u003cp\u003eMechanical workshops and tool laboratories use the 41-piece twist drill bit set 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\u003eThe Bernardo 41-piece twist drill bit set is part of the Bernardo cutting tool range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance: 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 working days from Krollit warehouse for spare parts and accessories. Customer support in Italian 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 41-piece twist drill bit set for?\u003c\/h3\u003e\n\u003cp\u003eThe 41-piece twist drill bit set 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 part 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\u003eWhich machine is it compatible with?\u003c\/summary\u003e\n\u003cp\u003eCheck the title or technical data sheet for the machine model or connection indicated (e.g., DG 20 M, BSG 30 Pro, Bernardo HM 25).\u003c\/p\u003e\n\u003cp\u003eBernardo tools are original spare parts for the machines in the Krollit catalog. For doubts about compatibility, contact customer support, specifying the machine's serial number.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCBN or diamond grinding wheel: which to choose?\u003c\/summary\u003e\n\u003cp\u003eCBN for sharpening drills and tools made of HSS, hardened, and case-hardened steels. Diamond ONLY for hard metal (carbide, HM).\u003c\/p\u003e\n\u003cp\u003eCBN grinding wheels cut \"cold\" without rounding on HSS, maintaining the abrasive edge for a long time. Diamond grinding wheels should not be used on steel: the grains round off quickly, losing cutting capacity.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat materials can it work on?\u003c\/summary\u003e\n\u003cp\u003eIt depends on the geometry and material of the tool: HSS for common steels, HM\/carbide for hard steels, CBN for HSS and case-hardened steels, diamond for hard metal.\u003c\/p\u003e\n\u003cp\u003eCobalt HM inserts (HSSE) work up to HRC 65. CBN grinding wheels cut HRC 55-70 steels, maintaining concentricity over time. For cast iron, consider green silicon carbide grinding wheels.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow is it stored and maintained?\u003c\/summary\u003e\n\u003cp\u003eIn a dry environment, protected from impacts and oxidation. Grinding wheels should be dressed periodically with a diamond dresser.\u003c\/p\u003e\n\u003cp\u003eFor abrasive grinding wheels, proper storage and periodic dressing preserve the cutting geometry. For HM inserts, storage in the original box is sufficient.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs it an original Bernardo spare part?\u003c\/summary\u003e\n\u003cp\u003eYes, Krollit has been an official Bernardo distributor since 2007 and only supplies original tools from the manufacturer.\u003c\/p\u003e\n\u003cp\u003eNon-original compatible tools may have out-of-specification tolerances and compromise machining accuracy. Shipping 3-5 working days.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50728293728584,"sku":"41-1018","price":169.19,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Set-di-punte-elicoidali-da-41-pezzi-41-1018-extra-big-16024.jpg?v=1750436741","url":"https:\/\/www.krollit.com\/products\/set-of-punte-elicoidali-da-41-pieces-41-1018","provider":"Krollit","version":"1.0","type":"link"}