ER25 collet - 1 mm - DARMET
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Description
Features and application:
- ER25 collet for tools with a cylindrical shank.
- Collets fit ER25 collets.
- ER25 nuts are used for wedging and clamping the cage.
- Grooves allow for spring-loading of the collet.
- Clamping range: 1.0 - 0.5 mm.
Technical data:

| Parameter | Value | Unit |
|---|---|---|
| d | 1 | 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 |
Installation of collets in nuts:
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Installation of the collet in the holder nut |
Collet correctly installed | Dismounting the collet |
- Insert the collet at an angle into the nut
- Hook the collet's channel into the eccentric or cylindrical projection of the nut (fig. A)
- Press the collet into the nut (fig. B)
- Screw the nut with the pressed collet onto the holder so that the tool being processed can be clamped
Maximum clamping diameters depending on the ER collet type:



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