ER-Collet with cooling channel holes ER40 | 472EC | < 15µm | Ø 8Application: 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)

(applicable up to 21 bar)

For the coolant supply through the centre of PSK toolholders

ISO-Metric Thread

quantity of inserts:

3 µm radial run-out with a 2 µm clamping nut

6 µm radial run-out with a 5 µm clamping nut

With securing screws and Tee-nuts

with adjustable ball spray nozzles

without cooling lubricant supply

Dragged-in prism

For holding tapers according to DIN 69871

longer tool life