Article no.: 309619

ER clamping nut with radial run-out adjustment

Brand: EWS
Standard DIN 6499 D

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Thread and taper ground in a single setup for highest concentricity.
6 screws allow the radial run-out to be reduced to zero.

Suitable for:

All standard ER collet chucks.
Ideally suitable for lathes, both for stationary and driven tools.

Optional extras:

ER clamping wrench, No. 309680 − 309740.
Single open ended spanner (for size 16), No. 613300 size 25.


Collet chuck and clamping nut are balanced separately!
Up to 6000 rpm.

Technical Data

DIN 6499 D
Type of product
Collet chuck accessories

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