Quote Originally Posted by GEOFFREY View Post
Hi, before removing the air cylinders you should find out their original function, they may be working as some kind of counter balance or lift assist for the Z axis.
Don't think so Geoff pretty sure they are for plunge drilling. If you look close you can see 3 sets of linear rails, each spindle has it's own back plate and each connected to a cylinder and 1 wide rail each and the Whole Z axis has another set of rails that move both together.
Also the Left Drilling spindle is fixed but the right can be offset using the Slots in the back plate, the Bar running horizontal acts has a register.