Nominal diameter of the clamping bore for holding shank tools
Requirements for the tool shank:
- Shank tolerance h6
- Commercially available shank types according to:
1) DIN 1835-1 form A and DIN 6535 form HA
2) DIN 1835-1 form B and DIN 6535 form HB (up to D1=20 mm)
3) DIN 1835-1 form B and DIN 6535 form HB (up to D1=25 mm)
4) DIN 1835-1 form E and DIN 6535 form HE