ER-Precision collet | stainless steel ER20 | 428ESP | < 5 µm | Ø 10,5 - 10,0Rustproof 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

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance1

Surface hardened HRC 58~60

For sealing tools with internal cooling in collet chucks

For machines with rigid tapping

- HRC 43-47

4021 x 20Cr13

Clamping range 0

For mounting screw-in cutters with thread

For face machining

For mounting straight-shank tools acc

LSCX = Clamping depth

For machining centres with synchronous spindle