The X_B file extension contains 3D model data saved in binary format. It was developed for the Parasolid software program by Siemens PLM Software. The X_B format replaced older XMT_BIN and XMP_BIN formats. It is used to exchange CAD models between applications. The text version of this model file type is the X_T file.
Fusion 360 software supports X_B files. It is the most used program to handle such files. Four other tools can also open X_B files. More information on X_B files or Fusion 360 is on Autodesk’s website.
X_B files exist on any operating system. Programs listed here can open them. They are divided by operating system availability.
Parasolid software saves 3D models as X_B files. The binary data includes geometry, topology, and color. X_B files serve as a standard exchange format for sharing CAD models. They contain the same data as text-based X_T files.
Knowing the file format helps open or edit files. Often, the format matches the extension or initial bytes. Errors can occur if the format does not match. Knowledge helps handle unknown or faulty files.
Our analysis shows X_B files belong to Parasolid models 98% of the time. The extension is not widely used overall. It is primarily associated with a single program.
Siemens NX
SolidWorks