WORKPIECE & TOOL CLAMPING
TECHNICAL INFORMATION – REAMER HOLDERS
ER Collet Holders
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| IK | Axial inner coolant inlet  |
| AK | Radial inner coolant inlet  |
| WD | Throughout flat  |
| FL | No throughout flat  |
| T | Especially for TORNOS machines |
| OS | Without inner stop screw |
| Thread inner coolant lead in abbreviations: | |
| AK0 | M12 x 1.5 (F) |
| AK1 | G 1/8″ (F) |
| AK2 | M8 x 1 (F) |
| AK3 | M10 x 1 (F) |
B = Smallest hole diameter
Collet Holders: Overlap of Nuts
| Nut | G | LA |
|---|---|---|
| ER08M | M10 x 0.75 | 4.3 - 6.1 |
| ER11M | M13 x 0.75 | 5.7 - 7.5 |
| ER16M | M19 x 1 | 8 - 11.5 |
| ER20M | M24 x 1 | 8 - 11.5 |
| ER25M | M30 x 1 | 8.5 - 12 |
| —- | —- | —- |
| UM/ER11 | M14 x 0.75 | 4.9 - 6.6 |
| UM/ER16 | M22 x 1.5 | 7 - 10.5 |
| UM/ER20 | M25 x 1.5 | 8 - 11.5 |
| —- | —- | —- |
| UX/ER16 | M22 x 1.5 | 7 - 10.5 |
| UX/ER20 | M25 x 1.5 | 8 - 11.5 |
| UM/ER25 | M32 x 1.5 | 8.5 - 12 |
| UM/ER32 | M40 x 1.5 | 9.5 - 13 |
| UM/ER40 | M50 x 1.5 | 11.5 - 15 |
| UM/ER50 | M64 x 2.0 | 14 - 21 |