{"product_id":"mandrino-m-70-con-ganasce-standard-tipo-a","title":"Lathe chuck Bernardo M 70","description":"\u003cp\u003eBernardo Mandrino M 70 is a professional lathe chuck with Type A dovetail jaws. Krollit, official Bernardo distributor since 2007.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSize: M70\u003c\/li\u003e\n\u003cli\u003eJaw type: Type A Dovetail\u003c\/li\u003e\n\u003cli\u003eIntended use: Professional and advanced hobbyist\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho uses the M 70 Chuck and for what\u003c\/h3\u003e\n\u003cp\u003eMechanical workshops and artisan turners use the M 70 Chuck as a clamping accessory on metal lathes, ensuring secure clamping and centering of the workpiece during turning, drilling, and grooving operations.\u003c\/p\u003e\n\u003ch3\u003eIts place in the Bernardo range\u003c\/h3\u003e\n\u003cp\u003eThe Bernardo M 70 Chuck is part of the Bernardo lathe chuck 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 assistance with selection.\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 M 70 Chuck for\u003c\/h3\u003e\n\u003cp\u003eThe M 70 chuck is recommended for the following professional profiles:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical workshops and artisan turners\u003c\/strong\u003e: secure clamping of round or hexagonal workpieces on metal lathes for turning, drilling, and grooving operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUsers with a compatible flange Bernardo lathe\u003c\/strong\u003e: original replacement or upgrade for Bernardo range lathes (Profi, Hobby, etc.) with an A2 connection conforming to DIN 55029.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIrregular or non-round workpieces\u003c\/strong\u003e: for non-symmetrically centered workpieces, consider 4-jaw independent chucks or universal faceplates.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat type of mounting does the M 70 Chuck have?\u003c\/summary\u003e\n\u003cp\u003eCheck the indicated connection in the title or specifications (typically A2-5, A2-6, A2-8 according to DIN 55029).\u003c\/p\u003e\n\u003cp\u003eThe A2 flange connection is the standard for Bernardo Profi and Hobby range lathes. The number (5, 6, 8) indicates the flange size, which must match the lathe's headstock.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many jaws does it have and are they reversible?\u003c\/summary\u003e\n\u003cp\u003eStandard self-centering chucks have 3 jaws; typically supplied with 1 set of internal and 1 set of external reversible jaws, plus a tightening key.\u003c\/p\u003e\n\u003cp\u003e3-jaw chucks are suitable for round or hexagonal workpieces. For square or irregular workpieces, consider 4-jaw independent chucks. Soft jaws can be machined on the lathe for special applications.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the maximum rotation speed?\u003c\/summary\u003e\n\u003cp\u003eSee \"Max speed\" in the technical table: typically 2,500-3,500 rpm for chucks up to Ø 200 mm.\u003c\/p\u003e\n\u003cp\u003eMaximum speed decreases with diameter. Large chucks (Ø 400+ mm) typically have limits of 1,500-2,000 rpm. Exceeding the maximum speed risks the jaws detaching.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat concentricity precision does it offer?\u003c\/summary\u003e\n\u003cp\u003eProfessional Bernardo chucks comply with DIN 8386 class with typical concentricity of 0.03-0.04 mm.\u003c\/p\u003e\n\u003cp\u003eConcentricity is critical for precision finishes. For high-precision machining (microns), higher-class chucks or dedicated clamping collets are required.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow is it mounted on the lathe?\u003c\/summary\u003e\n\u003cp\u003eThe chuck is mounted directly on the headstock flange via a camlock connection for A2 systems.\u003c\/p\u003e\n\u003cp\u003eThe Camlock system allows quick mounting without an additional adapter flange. For lathes with a threaded connection, a dedicated adapter flange is required. Krollit supplies compatible flanges separately.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50715190427976,"sku":"10-6052","price":136.92,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Mandrino_M70_con_griffe_a_coda_di_rondine_tipo_A.jpg?v=1770636999","url":"https:\/\/www.krollit.com\/products\/mandrino-m-70-con-ganasce-standard-tipo-a","provider":"Krollit","version":"1.0","type":"link"}