Seriously how are you guys breaking a breaker bar? I've worked on a lot of heavy equipment where an impact would was too weak but a breaker bar always worked, that's the point of the breaker bar, to break the nut loose and then drive it off with an impact.
And to the guy who broke a torque wrench!!!!!!!!! Were you using it to remove the nut? If so that's not the purpose of that tool.
If your breaking your bar on this nut then you have shitty tools, its really just that simple.