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<strong>Choice</strong> <strong>of</strong> <strong>tool</strong>GunEjector STSl 4D cDrill diameter, D cDrilling depth, l 4drills428.90,98 - 35≤80 × D c424.618,4 - 6550/100 × D c420.615,6 - 65100 × D cOrdering information seeSee Rotating Toolspage83catalogueWorkpiece material– Steel– Steel, hardenedP223333– Stainless steel– Heat resistant alloysM221133– Cast iron– Aluminium alloysK223233Surface finish Ra0,1-3,2 µm2 µm2 µmHole toleranceIT9IT10IT10Machine– DHD machines– NC machines– Lathes– Most conventionalmachines– Machining centres––––YesYesYesYesYesYesYes––––– Special gun drillingmachinesYes––Tool– Cutting fluid:Internal– Insert typeYes–Yes–Yes–Cutting dataSee page 153Good choice = 3 1 = Less suitable choice
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