220419 220424 220425 264 SOLID CARBIDE DRILLS CONTACT INFORMATION For more information please call +1 330 928 7744 or send an email to ataorders@atatools.com iq-drill 4-chamfer 5×D and 8×D with/without interior cooling supply. We optimize your production. guide-chamfer reaming-chamfer (fig. 3) (fig. 2) 1 This new development from Karnasch meets the highest drill quality standards. Reaming after drilling is often not necessary. 2 4 chamfer are optimally adjusted on the drill-diameter (see fig. 1). This additional guide-chamfer stabilizes the IQ-Drill at the beginning and throughout the drilling process. 3 IQ-Drill guarantees maximum alignment accuracy (see fig. 2) and concentricity for drilling depths exceeding 5×D. 4 The alignment and centering of the drill is uniformed even when interrupted by other holes in the workpiece (see fig. 3) because of the drill's extraordinary self-centering ability. 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
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