ER-Precision collet | stainless steel ER20 | 428ESP | < 5 µm | Ø 11,5 - 11Rustproof Stainless steel 1. 4021 x 20Cr13 HRC 43 47 Longer lived than standard collets Higher repeat accuracy Maximum concentricity <0,005mm Honed collet boring Especially suitable fore wire EDM

For machines with rigid tapping

For sealing tools with internal cooling in collet chucks

Hardening depth 0

For mounting straight-shank tools in collets

All holders are made of forged steel

For the manufacturing of special tools

For d = 60 only with four fi xation screws according to DIN 912

length adjustment range

For sealing the spindle of the turret

clamping depth l2 = max

For mounting straight-shank tools in collet chucks DIN 6391

- Higher repeat-accuracy