ER-Precision collet | stainless steel ER20 | 428ESP | < 5 µm | Ø 7,0 - 6,5Rustproof 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

For sealing tools with internal cooling

With clamping screws

- HRC 43-47

800 N/mm² after DIN

ER-system with spray nozzles

better process security and productivity

clamping depth l2 = max

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance6

For clamping tools with Morse taper shank and thread according to DIN 228-1 form A

For machining centres with synchronous spindle

longer tool life