{"product_id":"alesaggio-della-mola-corindone-normale-250-x-50-x-12-mm-k220","title":"Normal corundum grinding wheel bore 250 x 50 x 12 mm - K220","description":"\u003ch3\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\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 valign=\"top\" width=\"307\"\u003e\u003cp\u003eDiameter\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003e250 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003eWidth\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003e50 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003eBore\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003e12 mm\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003eGrit\u003c\/p\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" width=\"307\"\u003e\u003cp\u003e220\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\u003eBernardo shipping: 5–9 business days (7 days to the South). Original spare parts available with 3–5 business days shipping. Customer support in Italian available.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat material is this corundum grinding wheel Ø 250 mm K220 used for?\u003c\/summary\u003e\n\u003cp\u003eCorundum (Al₂O₃) grinding wheels are for unalloyed steel, structural steels S235\/S355, HSS tool steels, iron, brass. The K220 is suitable for finishing sharpening on HSS tools — it produces a finer edge than coarser grits. Do not use on tungsten carbide (HM) — corundum does not effectively work carbide and wears quickly. For HM, use only SDC or CBN diamond wheels.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this grinding wheel compatible with my bench grinder?\u003c\/summary\u003e\n\u003cp\u003eCheck the outer diameter (250 mm), thickness, and bore hole before purchasing — they must exactly match the machine's specifications. Also, check the maximum peripheral speed of the grinding wheel (indicated in m\/s) against the machine's spindle speed. Never mount a grinding wheel with a maximum speed lower than the machine's operating speed. Customer support in Italian available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do you dress a corundum grinding wheel when it clogs?\u003c\/summary\u003e\n\u003cp\u003eWith a single-point diamond dresser: place the dresser on the machine's rest, slowly bring the rotating wheel closer, and slide the diamond transversally across the face of the wheel with light feed. Dressing exposes new abrasive grains and removes clogged binder. Repeat whenever the wheel loses efficiency or vibrates during use.\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 days shipping. Customer support in Italian available.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50725187584328,"sku":"05-1808","price":60.64,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Alesaggio-della-mola-corindone-normale-250-x-50-x-12-mm-K220-extra-big-11766.jpg?v=1750406148","url":"https:\/\/www.krollit.com\/products\/alesaggio-della-mola-corindone-normale-250-x-50-x-12-mm-k220","provider":"Krollit","version":"1.0","type":"link"}