ATA International Product Catalogue

220419 220424 220425 270 SOLID CARBIDE DRILLS CONTACT INFORMATION For more information please call +353 49 435 2138 or send an email to ask@atagroup.ie iq-drill 4-chamfer 5×D and 8×D with/without interior cooling supply. We optimise your production. guide-chamfer reaming-chamfer (fig. 3) (fig. 2) 1 This new development from Karnasch meets highest demands on drill quality . Reming after drilling is often not necessary any more. 2 4 chamfer are optimally adjusted on the drill-diameter (see picture 1) . This additional guide-chamfer stabilises at the very beginning of drilling and is responsible for the further drilling process. 3 IQ-Drill guarantees maximum alignment accuracy (see picture 2) and coaxiality in particular for drilling depths exceeding 5×D. 4 Because of the extraordinary self-centering-ability , also by interrupting drill holes (see picture 3) , the alignment and concentricity stays almost constant. 5 Advantages IQ-Drill: no center drilling no predrilling no counterboring no drill bushing high surface quality / reamer quality high alignment accuracy tolerance H7 (fig. 1) Hole tolerance 3-6 -0/+0.012 6-10 -0/+0.015 10-18 -0/+0.018 18-30 -0/+0.021 Drill tolerance 3-6 +0.004 +0.016 6-10 +0.006 +0.021 10-18 +0.007 +0.025 18-30 +0.008 +0.029 H7 m7 11 Index 10 9 OIL 8 7 6 5 4 3 2 1