213072 201168 213050 213051 213052 625 I I I 10 mm 120 mm 6 8 10 12 14 16 18 20 10 mm 12 mm 125 mm 6 9 12 15 18 21 24 27 10 mm 8 mm 105 mm 10 mm 6 7 8 9 10 11 12 I I Content Art. 21 3050 21 3051 21 3052 EMPTY SET STEP DRILL SETS Alu Steel Stainless Copper, brass, tin Plastics GRP/CRP Grey cast iron APPLICATION STEP DRILLS POWERCUT10 · 4 CUTTING SPIRAL-FLUTED WITH SPLIT POINT Maximum cutting depth 10 mm Maximum cutting depth 10 mm Maximum cutting depth 10 mm PROPERTIES HSS-XE steel + TITAN-TEC coated Made of high-alloyed special steel 'XE' for considerably longer service life than HSS-Steel. TITAN-TEC coating for a further substantial increase in service life also when machining dry (no/less cooling). Cutting oil recommended, see page 1369 and following. The CBN ground and spiral flutes guarantee smooth running and high cutting performance. The chip flow is optimised and removed easily as with a twist drill. Ideal for thicker sheets from 2 mm. • The long steps result in a cutting depth of up to 10mm. • The special cutting geometry reduces the machining time by up to 75%. • Due to the geometry of the tip no additional centre punching necessary. • Pre-drilling is not necessary, therefore no tool changes are required. • Additional deburring is no longer necessary because of the subsequent step. • Excellent processing for hard-to-reach areas, e.g. for drilling in T-beams. 1590 Cutting data Movie < 1100 N < 900 N > 10% Si 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
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