57 mm Pull Stud (45°), Non-Through Type, for BT40-B Tool Holders – Darmet PS40.L57.K45.BT-B
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Description
Characteristics and Application:
- Pull stud (retention knob) designed for BT40-B tool holders.
- Suitable for CNC machine tools equipped with an automatic tool change system.
- Works with the spindle drawbar to provide stable and secure clamping of the tool holder.
- Non-through type, without a through-hole.
Technical Specifications:

| Parameter | Value |
|---|---|
| BT | 40 |
| L | 57 mm |
| a | 45° |
| M | M16 |
| L1 | 33 mm |
| L2 | 25 mm |
| d1 | 15 mm |
| d2 | 10 mm |
| d3 | 16 mm |
| D | 23 mm |


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