ATA International Product Catalogue

683 E H I N H 20 1747 20 1730 20 1752 20 1735 COUNTERSINKS EXTREME UNEQUAL PITCH Available in two different set versions Alu Steel Stainless Copper, brass, tin Plastics GRP/CRP Grey cast iron APPLICATION Hardox 450 Hardox 400 Hastelloy, Inconel, exotic materials Extreme unequal pitch Advantages of the extreme unequal pitch: Excellent surface quality due to reduced vibrations. Reduction of the axial force by 50% and the radial force by 25% results in: – Minimizing the cutting force for more tool life – Less machine load for a longer service life – Excellent for hand-operated use Optimal chip breaking through relief grinding Reduced axial force by 50% Normal countersink Countersink with extreme unequal pitch Optimised counterbore Normal countersink Countersink with extreme unequal pitch Reduced radial force by 25% radial force N Normal countersink Countersink with extreme unequal pitch new < 1400 N < 900 N > 10% Si 350 300 250 200 150 100 50 0 -50 -100 -150 1 2 3 4 5 200 150 100 50 0 -50 -100 1 1 3 3 2 2 696 714 697 715 90° 100° 11 Index 10 9 OIL 8 7 6 5 4 3 2 1