ER-Collet with cooling channels ER40 | 472ECC | < 15µm | Ø 18Application: 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)

For sealing tools with internal cooling in collet chucks

low warpage hardened

With built-in tightening bolt All holders are made of forged steel

ADJRGA = Length adjustment range

In machining centres (machines with automatic tool changers)

d = 40/d = 60: For large diameter face mill cutters with four additional threaded holes according to DIN 2079

With clamping screw

- Longer-lived than standard collets

HSS-Co5 Twist drill DIN338 d=6

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

With retaining screw

All functional surfaces fine machined