Collet Chuck Type ER
JIS B 6339 · BT40
For clamping tools with cylindrical shank in ER collets according to ISO 15488.
With taper JIS B 6339 BT40 form ADB.
Form ADB means: Central coolant supply and coolant channels on the collar which can be sealed again.
- Included in delivery: Locknut (balanced, with slide coating for higher clamping forces)
- Locknut type HS (High-Speed, fine balanced, with slide coating for higher clamping forces) for an extra charge
- Enlarging of size L for an upon request
Technical data subjects to change without prior notice.
The most important features:
- 1. Fine balanced G2.5 at 25,000 rpm
- 2. All functional surfaces grinded
- 3. Fine balanced ER nut
- 4. High runout accuracy
Technical drawing
Please select your clamping diameter:
| Version | ER 16 |
|---|---|
| Ø D [mm] | 28 |
| Clamping range [mm] | 0,5 - 10,0 |
| L [mm] short | - |
| L [mm] | - |
| Order No. | Gage length A in mm | |||||
|---|---|---|---|---|---|---|
| 40.520.16 |
 short, 70.00 mm L = drilled through |
|
|
Accessory | ||
| 40.521.16 |
 long, 100.00 mm L = drilled through |
|
|
Accessory | ||
| 40.522.16 |
 oversize, 160.00 mm L = drilled through |
|
|
Accessory |
| Version | ER 20 |
|---|---|
| Ø D [mm] | 34 |
| Clamping range [mm] | 1,5 - 13,0 |
| L [mm] short | 41,5 |
| L [mm] | 41,5 |
| Order No. | Gage length A in mm | |||||
|---|---|---|---|---|---|---|
| 40.520.20 |
 short, 70.00 mm |
|
|
Accessory | ||
| 40.521.20 |
 long, 100.00 mm |
|
|
Accessory | ||
| 40.522.20 |
 oversize, 160.00 mm |
|
|
Accessory |
| Version | ER 25 |
|---|---|
| Ø D [mm] | 42 |
| Clamping range [mm] | 1,0 - 16,0 |
| L [mm] short | 57 |
| L [mm] | 57 |
| Order No. | Gage length A in mm | |||||
|---|---|---|---|---|---|---|
| 40.520.25 |
 short, 70.00 mm |
|
|
Accessory | ||
| 40.521.25 |
 long, 100.00 mm |
|
|
Accessory | ||
| 40.522.25 |
 oversize, 160.00 mm |
|
|
Accessory |
