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NX Converter

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NX_Reader supports reading .prt files written by Siemens NX of versions 5 to 12.

NX_Reader also supports files written by newer versions of NX (1847, 1872 and 1899) but it is currently experimental. If you find that your files produced by these NX versions are read incorrectly, please let us know.


  • B-Rep representations
  • polygonal representations (incl. multi-LODs)
  • colors
  • names
  • assembly structure (via external files)

Known limitations

NX assemblies are represented with external files and it's possible for an assembly to contain components saved by different versions of NX. In case some of the components are saved by an unsupported version of NX, CAD Exchanger will not be able to load them and they will be omitted from the imported product structure.