Properties and application:
- ER (DIN6499B) collet for tools with cylindrical shanks
Specifications:
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| Model | d H7 [mm] | D [mm] | D1 [mm] | D2 [mm] | L [mm] | L1 [mm] | L2 [mm] | L3 [mm] |
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| DM 70 ER8 | Ø1 - Ø5 | Ø8 | Ø8,45 | Ø6,5 | 13,5 | 2,98 | 1,5 | 1,2 |
| DM 70 ER11 | Ø1 - Ø7 | Ø11 | Ø11,5 | Ø9,5 | 18,0 | 3,8 | 2,5 | 2,0 |
| DM 70 ER16 | Ø1 - Ø10 | Ø16 | Ø17,0 | Ø13,8 | 27,5 | 6,26 | 4,0 | 2,7 |
| DM 70 ER20 | Ø1 - Ø13 | Ø20 | Ø21,0 | Ø17,4 | 31,5 | 6,36 | 4,8 | 2,8 |
| DM 70 ER25 | Ø1 - Ø16 | Ø25 | Ø26,0 | Ø22,0 | 34,0 | 6,66 | 5,0 | 3,1 |
| DM 70 ER32 | Ø2 - Ø20 | Ø32 | Ø33,0 | Ø29,2 | 40,0 | 7,16 | 5,5 | 3,6 |
| DM 70 ER40 | Ø3 - Ø26 | Ø40 | Ø41,0 | Ø36,2 | 46,0 | 7,66 | 7,0 | 4,1 |
| DM 70 ER50 | Ø6 - Ø34 | Ø50 | Ø52,0 | Ø46,0 | 60,0 | 12,6 | 8,5 | 5,5 |
Mounting the collet in the nut:
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Mounting the collet in the nut |
Properly mounted collet | Dismounting of the collet |
For proper mounting of ER collet follow these steps:
- Put the collet into the nut at a slight angle
- Hook the groove of the collet on eccentric or cylindrical edge of the collet (fig. A)
- Jam the collet into the nut (fig. B)
- Screw the nut with collet on the toolholder, so that mounting of the machined tool is possible
Max mounting diameters in relation to ER collet size:
