I guess there would be an option while installing PADS to select only the translators, not the whole products
but if you are looking for the executable files which contains only translators, do check https://supportnet.mentor.com/downloads/related/translator_pads_exp_library
But it supports very old version of PADS.
did you try installing xPCB VX.1 and see if it has a separate option for translators?
If you install everything the translators show up under the PADS tree.
I only need the translator for a PADS to xPCB translation and do not want a complete PADS environment on my system.