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

For internal machining with boring bars

B4 - 25 x 16 x 30

800 N/mm² after DIN

With high precision coolant you get improved

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance2

For the manufacturing of special tools

For sealing the spindle of the turret

For mounting tools with straight shanks

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance4

- Higher repeat-accuracy

For mounting straight-shank tools and inclined flat according to DIN 1835 form E (Whistle Notch)

With clamping screw and axial adjustment bolt