Compact hexapod 6-DOF alignment system features patented overload protection Any-orientation mounting and six-axis motion support flexible integration into optical and photonics systems. (Nanowerk News) PI (Physik Instrumente), a leading manufacturer of high precision air bearings, motion control and nanopositioning systems, offers a new overload protection for its compact H-811 hexapod. The patented protection is designed to safeguard its precision mechanics during installation, integration, and operation. PI's compact H-811.I2HS hexapod delivers precise 6-DOF motion with patented overload protection simplifying setup and shop floor operation in OEM applications. A user programmable pivot point as well as powerful simulation and alignment software are part of the hexapod / controller system.