
| DIN 6499 | |
| 246580 KOCH, clamping nut Mini pre-balanced for high speed | |
| Collet 246580 d1 mm G | h mm |
| ER16M 22 M19 × 1�00 | 18�0 |
| ER20M 28 M24 × 1�00 | 19�0 |
| ER25M 35 M30 × 1�00 | 20�0 |
6499
D L max� tightening torque
Collet 246571 G
| mm | mm | Nm | |||
| ER08M | | 12 | M10 × 0�75 | 10�8 | 8 |
| ER11M | | 16 | M13 × 0�75 | 12�0 | 18 |
| ER16M | | 22 | M19 × 1�00 | 18�4 | 28 |
| ER20M | | 28 | M24 × 1�00 | 19�0 | 35 |
| ER25M | | 35 | M30 × 1�00 | 20�0 | 40 |
Accessories for collet chucks DIN 6499 DIN 6499
246501 PRECITOOL, clamping nut, pre-balanced ER25 - ER40
| Collet | 246501 | D mm | Type | G | L mm | max� tightening torque Nm |
| ER11 | | 19 | hexagonal | M14 × 0�75 | 11�3 | 25 |
| ER16 | | 28 | hexagonal | M22 × 1�50 | 17�5 | 50 |
| ER20 | | 34 | hexagonal | M25 × 1�50 | 19�0 | 75 |
| ER25 | | 42 | with groove | M32 × 1�50 | 20�0 | 85 |
| ER32 | | 50 | with groove | M40 × 1�50 | 22�5 | 105 |
| ER40 | | 63 | with groove | M50 × 1�50 | 25�5 | 150 |
Design: - clamping nut with slide ring and coating for increased clamping power DIN - grooved form (except size ER16 and Er20 with hexagon) 6499
| Collet | 246520 | d1 mm | Type | G | h mm |
| ER16 | | 28 | hexagonal | M22 × 1�5 | 20�3 |
| ER20 | | 34 | hexagonal | M25 × 1�5 | 21�8 |
| ER25 | | 42 | with groove | M32 × 1�5 | 22�4 |
| ER32 | | 50 | with groove | M40 × 1�5 | 25�0 |
| ER40 | | 63 | with groove | M50 × 1�5 | 28�3 |