ER-Collet with cooling channel holes ER40 | 472EC | < 15µm | Ø 23Application: For mounting straight shank tools in collet chucks DIN 6499. Note: Only nominal size d can be clamped, with cooling channels. In order to achieve an optimum sealing the tool must be clamped on the complete length of the ground drill of the collet. (applicable up to 21 bar)

low warpage hardened

Collet chucks and wrenches to be ordered separately

Clamping range 0

length adjustment range

Collets sealed with seal for IC

For mounting straight-shank tools in collet chucks DIN 6391

For face machining

- Maximum concentricity <0

With clamping screw

- Longer-lived than standard collets

For machining centres with synchronous spindle

20 mm only with reduction sleeve)