Locking nut with bearing for ER16 collets | Type A hexagonal - DARMET (DM 072)
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Description
Features and application:
- Clamping nut with a plain ball bearing.
- The bearing is secured by a 1.5mm Allen screw.
- Made of high-quality steel.
- Designed for holders used with ER16 DIN 6499 collets.
- Before mounting in the holder, the collet must be inserted into the nut.
- Tightening and loosening using open-end wrench 25 mm.
Technical data:

| Parameter | Value | Unit |
|---|---|---|
| D | 28 | mm |
| L | 17.5 | mm |
| M | M22 x 1.5 | mm |
| Weight | 0.05 | kg |
Installation of sleeves in nuts:
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Mounting the collet in the collet nut |
The collet is correctly mounted | Dismounting the collet |
To properly mount the ER collet in the collet:
- Insert the collet at an angle into the nut.
- Hook the collet channel onto the eccentric or cylindrical projection of the nut (Fig. A).
- Press the collet into the nuts (Fig. B).
- Screw the nut with the pressed-in sleeve onto the holder so that the tool being processed can be mounted.


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