213053 627 10 mm 67 mm 6 8 10 12 14 16 18 6 mm 4 mm I Alu Steel Stainless Copper, brass, tin Plastics GRP/CRP Grey cast iron APPLICATION SPECIAL GUARDRAIL STEP DRILL · 2 CUTTING SPIRAL-FLUTED WITH SPLIT POINT PROPERTIES Special step drill for guardrail assembly (6-18 mm). Made of HSS-XE special steel + TITAN-TEC coating • Specially designed for drilling in guardrail assembly • 12mm step for mounting spars & spacers (extended drill step 12mm minimises the danger of accidental drill hole enlargement) • 18mm step for guardrail spars & box sections (extended drill step 18mm for double-drilling / 2 guardrails within 1 work step) • The stop ring prevents the step drill from slipping through while powerful working. Protects man and machine • Step drill made of high-alloyed special steel 'XE' + TITAN-TEC coating for maximum service life also when machining dry (cutting oil recommended, see page 1369 and following) • Cutting depth for 6, 8, 10, 14, 16 = 4mm • Cutting depth for 12, 18 = 6mm • 3-Flat shank (excellent torque transmission, no slippage in the drill chuck, this results to superior cutting output) Advantages • Significant cost reduction for drilling fully galvanised materials • Optimal cutting behavior due to constant cutting angles • No tilting of the drill during the cutting process, therefore no wrist joint injuries (no accidents at work) 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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