ER25 collet - 14 mm - DARMET
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Description
Properties and Applications:
- ER25 collet for tools with cylindrical shank.
- Collets fit ER25 collet chucks.
- ER25 nuts are used for wedging and clamping the collet.
- Slots allow the collet to spring.
- Clamping range: 14.0 - 13.0 mm.
Technical Data:

| Parameter | Value | Unit |
|---|---|---|
| d | 14 | mm |
| D | 25 | mm |
| D1 | 26 | mm |
| D2 | 22.0 | mm |
| L | 34.0 | mm |
| L1 | 6.66 | mm |
| L2 | 5.0 | mm |
| L3 | 3.1 | mm |
Collet Assembly in Nuts:
|
| ||
| Installing the collet in the collet chuck nut | Properly installed collet | Removing the collet |
To properly install an ER collet in the chuck you should:
- Insert the collet at an angle into the nut.
- Hook the collet slot onto the eccentric or cylindrical protrusion of the nut (fig. A).
- Press the collet into the nut (fig. B).
- Screw the nut with the pressed-in collet onto the chuck so that the tool can be properly clamped.
Maximum clamping diameters depending on the ER collet type:



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