{"product_id":"trapani-a-colonna-bernardo-gb-55","title":"Pillar drill Bernardo GB 55","description":"\u003cp\u003eThe Bernardo GB 55 is a pillar drill for professional use, with a drilling capacity of 50 mm, speeds of 42 – 2050 rpm \/ 12, a 2.2 \/ 2.8 kW motor, and weighing approx. 760 kg. Krollit, official Bernardo distributor since 2007.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDrilling capacity steel: 50 mm\u003c\/li\u003e\n\u003cli\u003eDrilling capacity cast iron: 60 mm\u003c\/li\u003e\n\u003cli\u003eTapping capacity max.: M30\u003c\/li\u003e\n\u003cli\u003eChuck: 3 – 16 mm \/ B18\u003c\/li\u003e\n\u003cli\u003eSpindle taper: MT 5\u003c\/li\u003e\n\u003cli\u003eSpindle speed \/ Steps: 42 – 2050 rpm \/ 12\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWho uses the GB 55 and for what\u003c\/h3\u003e\n\u003cp\u003eMechanical workshops and metal fabrication shops use the GB 55 for precision drilling in steel and cast iron, tapping with a tapping chuck, and repetitive work on parts of various sizes.\u003c\/p\u003e\n\u003ch3\u003eIts place in the Bernardo range\u003c\/h3\u003e\n\u003cp\u003eThe Bernardo GB 55 is part of the Bernardo pillar drill range, distributed in Italy by Krollit since 2007. The Bernardo range includes models of various categories and performance levels: 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\u003eMachine shipping in 5-9 working days (7 days for Southern Italy). For spare parts and accessories, shipping in 3-5 working days from Krollit warehouse. Customer support in Italian available for technical documentation, product sheets, and spare parts order management. Krollit has been an official distributor since 2007.\u003c\/p\u003e\n\u003ch3\u003eWho is the GB 55 for\u003c\/h3\u003e\n\u003cp\u003eThe GB 55 is recommended for the following professional profiles:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical workshops and metal fabrication shops\u003c\/strong\u003e: precision drilling in steel and cast iron, tapping with a tapping chuck.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance technicians and repair workshops\u003c\/strong\u003e: repetitive drilling work on parts of various sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOccasional hobby use\u003c\/strong\u003e: professional machine: for home use, consider compact benchtop models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWorking capacity\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrilling capacity steel\u003c\/td\u003e\n\u003ctd\u003e50 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrilling capacity cast iron\u003c\/td\u003e\n\u003ctd\u003e60 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTapping capacity max.\u003c\/td\u003e\n\u003ctd\u003eM30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle stroke\u003c\/td\u003e\n\u003ctd\u003e235 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eSpindle, tools and speed\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChuck\u003c\/td\u003e\n\u003ctd\u003e3 – 16 mm \/ B18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle taper\u003c\/td\u003e\n\u003ctd\u003eMT 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle speed \/ Steps\u003c\/td\u003e\n\u003ctd\u003e42 – 2050 rpm \/ 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle-column distance\u003c\/td\u003e\n\u003ctd\u003e360 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle-table distance max.\u003c\/td\u003e\n\u003ctd\u003e570 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpindle-base distance\u003c\/td\u003e\n\u003ctd\u003e1170 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTable, dimensions and geometry\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eColumn diameter\u003c\/td\u003e\n\u003ctd\u003e180 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTable dimensions \/ T-slots\u003c\/td\u003e\n\u003ctd\u003e545 x 470 mm \/ 14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMachine dimensions (L x W x H)\u003c\/td\u003e\n\u003ctd\u003e700 x 950 x 2350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eapprox. 760 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOther specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic feeds\u003c\/td\u003e\n\u003ctd\u003e0.07 \/ 0.15 \/ 0.20 \/ 0.40 mm\/rev\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor power\u003c\/td\u003e\n\u003ctd\u003e2.2 \/ 2.8 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the drilling capacity of the GB 55?\u003c\/summary\u003e\n\u003cp\u003eSee the \"Drilling capacity\" data in the machine's technical table.\u003c\/p\u003e\n\u003cp\u003eThe capacity refers to standard unhardened steel. On harder materials or alloyed steels, the actual capacity may be lower: reduce speed and feed to avoid stressing the spindle and tools.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do you adjust the spindle speed?\u003c\/summary\u003e\n\u003cp\u003eVia mechanical gear change with belts or gears in stepped models, via inverter or variator in Vario models.\u003c\/p\u003e\n\u003cp\u003eVario models allow continuous adjustment, while stepped models require moving the belt to different pulleys. Correct speed selection based on drill bit diameter and material extends tool life.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat spindle taper and type of tools does it support?\u003c\/summary\u003e\n\u003cp\u003eSee \"Spindle taper\" in the technical table: typically MT 2, MT 3 or MT 4 depending on the model.\u003c\/p\u003e\n\u003cp\u003eMT (Morse Taper) fittings are international standards, and accessories (arbors, keyless chucks, reductions) are commonly available on the market. Krollit supplies original Bernardo accessories.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes the drill allow tapping with a tapping chuck?\u003c\/summary\u003e\n\u003cp\u003eOnly models with standard right\/left rotation allow tapping with automatic tap release.\u003c\/p\u003e\n\u003cp\u003eCheck the \"Right\/left rotation\" or \"Tapping\" specification: drills without mechanical reversal are not suitable for repetitive tapping.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the weight of the machine and what installation does it require?\u003c\/summary\u003e\n\u003cp\u003eThe weight varies from about 25 kg (compact benchtop models) to over 250 kg (industrial Profi models).\u003c\/p\u003e\n\u003cp\u003eBenchtop models are installed on a sturdy workbench, while pillar or radial models require floor mounting with expansion anchors for stability during drilling.\u003c\/p\u003e\n\u003c\/details\u003e","brand":"Bernardo","offers":[{"title":"Default Title","offer_id":50983888879944,"sku":"01-1312XL","price":8700.3,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0891\/2139\/0920\/files\/Bernardo_GB_55_Trapano_a_ingranaggi_con_avanzamenti_automatici_e_tavola_motorizzata.png?v=1757492547","url":"https:\/\/www.krollit.com\/products\/drills-pillar-bernardo-gb-55","provider":"Krollit","version":"1.0","type":"link"}