Pneumatic Mechanical Chucks
If big torques, especially with shaftless unwindings and rewindings, are needed, pneumatic-mechanical chucks are used.
Additionally, they offer the following advantages:
The basic chuck has a piston cylinder combination that expands five mechanically controlled LUG's.
According to the required clamping force, the following basic types are made:
If you want to clamp different diameters, you can use an adapter.
Another possibility is the use of multistage chucks
Here you can find a dimension sheet: TYPE II-D
Pneumatic mechanical chucks, as well as the adapters, can be equipped with LEAF's. This makes them suited for application cases with sensitive cores.
Nearly all requirements can be met. Also, small core diameters can be clamped certainly and centrically.
All produced and available pneumatic mechanical chucks work after three principles: