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1. All types of ER collets conform to the DIN 6499B Standard
2.Made of special elastic steel：65Mn
3.Hardness：HRC44-48
4.Mode：ER8-ER50
5.Accuracy：0.01mm, 0.015mm
6.Packaging：Paper case or plastic case
7. Used for boring, milling, drilling, tapping, grinding and engraving operation etc.
| HT-0001 | ER SERIES COLLETS WITH STANDARD DIN6499B | ||||||||
| Model | d H7 | D | D1 | D2 | L | L1 | L2 | L3 | Collapsible capacity |
| ER8 collet | ≥1.0-5.0 | 8 | 8.45 | 6.5 | 13.5 | 2.98 | 1.5 | 1.2 | 0.5 |
| ER11 collet | ≥1.0-7.0 | 11 | 11.5 | 9.5 | 18.0 | 3.8 | 2.5 | 2.0 | 0.5 |
| ER16 collet | ≥1.0-2.5 | 16 | 17 | 13.8 | 27.5 | 6.26 | 4.0 | 2.7 | 0.5 |
| >2.5-10.0 | 16 | 17 | 13.8 | 27.5 | 6.26 | 4.0 | 2.7 | 1.0 | |
| ER20 collet | ≥1.0-2.5 | 20 | 21 | 17.4 | 31.5 | 6.36 | 4.8 | 2.8 | 0.5 |
| >2.5-13.0 | 20 | 21 | 17.4 | 31.5 | 6.36 | 4.8 | 2.8 | 1.0 | |
| ER25 collet | ≥1.0-2.5 | 25 | 26 | 22.0 | 34.0 | 6.66 | 5.0 | 3.1 | 0.5 |
| >2.5-16.0 | 25 | 26 | 22.0 | 34.0 | 6.66 | 5.0 | 3.1 | 1.0 | |
| ER32 collet | ≥2.0-2.5 | 32 | 33 | 29.2 | 40.0 | 7.16 | 5.5 | 3.6 | 0.5 |
| >2.5-20.0 | 32 | 33 | 29.2 | 40.0 | 7.16 | 5.5 | 3.6 | 1.0 | |
| ER40 collet | ≥3.0-26.0 | 40 | 41 | 36.2 | 46.0 | 7.66 | 7.0 | 4.1 | 1.0 |
| ER50 collet | ≥6.0-10.0 | 50 | 52 | 46.0 | 60.0 | 12.6 | 8.5 | 5.5 | 1.0 |
| >10.0-34.0 | 50 | 52 | 46.0 | 60.0 | 12.6 | 8.5 | 5.5 | 2.0 | |
| Inspection of Accuracy | |||
| D | L | Run out toierance | |
| Ⅰ | Ⅱ | ||
| 1.0-1.6 | 6.00 | 0.01 | 0.02 |
| >1.6-3.0 | 10.00 | ||
| >3.0-6.0 | 16.00 | ||
| >6.0-10.0 | 25.00 | ||
| >10.0-18.0 | 40.00 | 0.02 | 0.02 |
| >18.0-26.0 | 50.00 | ||
| >26.0-30.0 | 60.00 | ||
| >30.0-34.0 | 80.00 | 0.02 | 0.03 |
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