Общий каталог FANAR 2021 - страница 324

α γ δ Technical information i 10.6. Variable helix angle and pitch Cause that intervals between peaks of cutting forces are Unequal helix angle and irregular pitch Reduce vibrations β Increase tool life Allow to work with high cutting speeds. 10.7. Shank types Diameter Cylindrical- Form HA Weldon shank - Form HB Ø6 - Ø20 Ø25 - Ø32 12 321