QUESTION: an EJ is bought from a vendor so really we should check only forces/moments on its ends so to tell them to vendor. Vendor will check if trunnion will break or not (considering also the sif inside the trunnion). For us an EJ is an "object" able to absorb movements (and infact we model the two bellows),to push (so there is the innner pressure that will "open" the bellows), to resist (the bellows N/mm).

is it right?