Bridgeport 4th and 5th axis enabled machines

[AndrewMawson]

Assuming you are talking Heidenhain equipped Bridgeports I think all the controllers from the TNC150 forwards had the capability to add a forth axis. What you may not have is the relevant Bosch servo drive card to drive the 4th axis servo.

I have a Beaver Partsmaster with a Heidenhain TNC 355 controller. I've added a 4th axis to this machine by using a Bosch servo card from a Bridgeport Interact. It works well - I've even recently got the FeatureCAM post processor to let me engrave text on the outside of a cylinder with it :)

I've a build thread on another forum, but I'll have to check with the mods if it's ok to link to it, as I know some forums get a bit shirty about that :)