Normally clamping on a surface that is not rotationally symmetric, or in a bore that is not rotationally symmetric is impossible due the risk of a breakage.
However this process can be ensured by using a profiled intermediate collet.
In this regard it makes no difference whether a Hydra expansion arbor ist used for interior clamping or a Hydra expansion chuck is used for exterior clamping.
A pressure sensor 4 is installed in the Hydra Expansion Arbor 5 from Hydraclamp.
To measure clamping pressure, the digital pressure measurement device "Power Control" 1 from Mytec-Hydraclamp is connected to Hydra Expansion Arbor 5 via magnetic contacts 2 + 3.
For hand-activated clamping via clamping screw 8 the clamping pressure in the Hydra Expansion Arbor 5 is displayed digitally in the bar on the display of the "Power Control" measuring device.
The clamping pressure, and thus the expansion of the Hydra Expansion Arbor, can always be precisely controlled and reproduced via this clamping or measuring process.
The "Power Control" system can also be used with automatic clamping. It is then directly connected to the machine controller.