ER-Collet with cooling channels ER40 | 472ECC | < 15µm | Ø 20Application: 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)

Surface roughness Ra < 0

The steel body is hardened and grinded

Hardened steel

Jaws with grip serrations und fine step for workpieces with max

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

quick and simple measuring of the clamping force of hydraulic chucks

tool steel

Minimum internal diameter measurement capability of 20mm

Betthöhe H: 0

For mounting solid drills with cylindrical shank according to DIN 6595

Coolant pressure up to max

Excellent concentricity in the system (chuck + collet + clamping nut)