Properties and application:
- Made of high-quality steel.
- Designed for collet chucks used with ER collets DIN 6499.
- Before mounting in a chuck, the collet has to be mounted in the nut.
Specifications:

Parameter | Value | Unit |
D |
63 |
mm |
L |
25,5 |
mm |
M |
M50 x 1,5 |
mm |
Weight |
0,3 |
kg |
Installing collet in the nut:

For proper mounting of ER collet follow these steps:
- Put the collet into the nut at a slight angle.
- Hook the groove of the collet on eccentric or cylindrical edge of the collet (fig. A).
- Jam the collet into the nut (fig. B).
- Screw the nut with collet on the toolholder, so that mounting of the machined tool is possible.
- Fig. C shows how to remove the collet.
DM_AKC_NAK_ER40_T2
Data sheet
- Accessory type
- ER collet nut