Hanging a 6640 on track

Hello,

I am most likely wrong here but no idea where to post my question:

is it possible to hang a 6640 on a track upside down to the ceiling? other then the stiffness of the construction of the frame I don't see a problem with the track. on the robot I could imagine it could be an problem with the gearboxes getting lubricated by the oil?

Bad idea?

Thanks