{"product_id":"griffe-per-mandrini-doj-dk12-500","title":"Chuck Jaws DOJ-DK12-500","description":"\u003cp\u003eDOJ jaws Ø 500 mm for DK12 chucks — external gripping jaws. Krollit has been an official Bernardo distributor in Italy 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\u003e500 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\u003e180 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\u003e46 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\u003e100 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\u003e17 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\u003e18 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\u003e24 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\u003e119.5 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\u003e50 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 business 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 500 mm — what does DOJ mean and how do they differ from DIJ jaws?\u003c\/summary\u003e\n\u003cp\u003eDOJ (Direct Outer Jaw) indicates jaws for external gripping: the teeth bite from the outside of the workpiece diameter, clamping inwards. These are standard jaws for clamping bars, shafts, cylinders, and compactly shaped workpieces. DIJ jaws do the opposite — internal gripping on hollow workpieces. 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 attachment (12 DIN 6350 bolts). Check the attachment type of your chuck before purchase — DK11 and DK12 are not interchangeable. The Ø 500 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 rough steel, cast iron, and aluminum — they clamp strongly without deforming but leave marks on finished workpieces. Soft jaws (mild steel) do not leave marks on pre-machined workpieces and can be turned in situ for maximum concentricity. For finishing operations on pre-machined parts: soft jaws. For roughing and production on rough workpieces: 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 business 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":50726260048200,"sku":"21-0963","price":920.11,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Griffe-per-mandrini-DOJ-DK12-500-extra-big-21279-856.jpg?v=1750417624","url":"https:\/\/www.krollit.com\/products\/griffe-per-mandrini-doj-dk12-500","provider":"Krollit","version":"1.0","type":"link"}