- ER collets are used in vmc tool holders for clamping tools for boring, milling, drilling, tapping and grinding operations.
- ER collets are made of special elastic plastic steel under excellent heat treatment process and precise grinding process.
- R8 collets have a keyway to prevent rotation when fitting or removing, but it is the compressed taper and not the keyway that provides the driving force.
- Collets are compressed by a drawbar from behind, they are self-releasing and tool changes can be automated.
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