352 / Step drills & Core drills www.youtube.com/NortonAbrasivesEMEA NEW! HIGH PERFORMANCE CORE DRILLS (ANNULAR CUTTERS) ENERGY SAVING Since core drills do not have to drill/cut through the entire diameter of the required hole, they require less energy to drill through the material. Core drills stay sharp longer and can produce 5 to 10 times more holes than a twist drill. SAVE MONEY TIP! HSSM2 and HSS-E can be easily re-sharpened and re-used for drilling. Core drills can NOT drill blind holes. They can only make through holes. Materials like cast iron produce a lot of powder, compressed air is recommended instead of cutting oil or coolant. To keep your core drill at its optimum efficiency always use it with suitable cutting oil. Norton core drills are best used with either magnetic drills or drill press machines. A core drill works differently than conventional twist drills, as it cuts only a groove at the periphery of the hole, leaving a solid core in the centre that is ejected by the centre pin. This results in faster and easier drilling of larger holes and a much longer tool life. Norton high performance core drills enable easy drilling of a wide range of materials, and we make it even easier for you to choose the best solution from our range of core drills, whether it be TCT (Tungsten Carbide Tipped), HSS-E (High Speed Steel Cobalt alloy) or HSSM2 (High Speed Steel M2). All our core drills are supplied as standard with a Weldon Shank. Alternative shanks (Universal, Fein, Thread) and other core dimensions are available on request. STEP DRILLS & CORE DRILLS
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