ER-Collet with cooling channel holes ER40 | 472EC | < 15µm | Ø 5Application: 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)

Mainly for external machining

SK 30 without coolant exit bores on the end faceDelivery:

For d = 60 only with four fi xation screws according to DIN 912

Improves chip evacuation and decreases the risk for chip jamming

5 with h4-tolerance and Ø 6 – Ø 32 with h6-tolerance3

- Honed collet boring

length adjustment range

For mounting straight-shank tools in collet chucks DIN 6391

Application:

contact- and hot air shrink units

- Longer-lived than standard collets

• runout accuracy: = 0