{"product_id":"griffe-per-mandrini-doj-dk12-125","title":"Chuck Jaws DOJ-DK12-125","description":"\u003cp\u003eDOJ jaws Ø 125 mm for DK12 chucks — external gripping jaws. Distributed in Italy by Krollit — official Bernardo distributor since 2007.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cb\u003etechnical specifications\u003c\/b\u003e\u003c\/h3\u003e\u003cdiv class=\"table-responsive table table-detail\"\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eChuck size\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\"\u003e\u003cp\u003e125 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eA\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e56 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eB\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e16 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eC\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e45 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003ed\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e7 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eE\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e8 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eF\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e9 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eh\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003e38 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"307\" valign=\"top\"\u003e\u003cp\u003eG\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd width=\"307\"\u003e\u003cp\u003e18 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eLogistics\u003c\/h3\u003e\n\u003cp\u003eOriginal spare parts available with 3–5 working day shipping. Customer support available in Italian.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDOJ jaws Ø 125 mm — what does DOJ mean and how do they differ from DIJ jaws?\u003c\/summary\u003e\n\u003cp\u003eDOJ (Direct Outer Jaw) refers to external gripping jaws: the teeth grip the outer diameter of the workpiece, tightening inwards. They are the standard jaws for clamping bars, shafts, cylinders and compact shaped parts. DIJ jaws do the opposite — internal gripping on hollow parts. The same machine can use both DIJ and DOJ depending on the workpiece, as long as the chuck size is compatible.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDK12 series — compatibility with my chuck?\u003c\/summary\u003e\n\u003cp\u003eDK12 mounting (12 DIN 6350 bolts). Check your chuck's mounting type before purchasing — DK11 and DK12 are not interchangeable. The Ø 125 mm diameter must match the chuck size. Customer support available in Italian.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHard DOJ jaws vs soft jaws — when to choose one over the other?\u003c\/summary\u003e\n\u003cp\u003eHard DOJ jaws (hardened) are for general use on steel, cast iron, and rough aluminum — they clamp firmly without deforming but leave marks on finished parts. Soft jaws (mild steel) do not leave marks on pre-machined parts and can be turned in situ for maximum concentricity. For finishing operations on pre-machined parts: soft jaws. For roughing and production on raw parts: hard jaws.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDelivery times?\u003c\/summary\u003e\n\u003cp\u003eOriginal spare parts available with 3–5 working day shipping. Customer support available in Italian.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50726255296840,"sku":"21-0957","price":96.72,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Griffe-per-mandrini-DOJ-DK12-125-extra-big-21264-382.jpg?v=1750417517","url":"https:\/\/www.krollit.com\/products\/griffe-per-mandrini-doj-dk12-125","provider":"Krollit","version":"1.0","type":"link"}