Whether small or large diameter, the ARNO system for internal grooving guarantees smooth processes and high quality.

For internal grooving you can always depend on ARNO quality. Whether you need boring bars made of steel or solid carbide, with or without through-tool coolant, ARNO has you covered. With a wide variety of clamping holders and work angles, we have the optimum solution for every requirement.Our ISO boring bars are available in right or left design with different shank diameters. In combination with the matching mini indexable inserts from ARNO, you can effortlessly machine down to D_min 4.8 mm.