Hi Sanjay, this sounds like a JT file compatibility or conversion issue between Teamcenter and the Mendix 3D Viewer.
If the same JT file loads correctly in Teamcenter Visualization but only partially in the Mendix 3D Viewer (with no errors in the logs), it’s possible that:
The file contains unsupported geometry types or metadata that the Mendix viewer can't fully interpret.
Some subparts or PMI data might be excluded during conversion or not recognized by the viewer.
Large assemblies may hit performance limits or timeouts on the client side, which causes the loading bar to keep spinning.
A few things you can try or check:
Make sure the JT file version is supported by the Mendix viewer (some newer JT formats might not be fully supported).
Try viewing a simplified version of the assembly (fewer parts) to see if it loads completely.
Check if there’s any custom conversion or export setting in Teamcenter affecting how the JT file is built for external viewers.
Also, enabling debug mode or network inspection in the browser might help you spot if the viewer is getting stuck while loading a specific resource or subcomponent.
Mendix - 3D Viewer - > Check this documentation
Hope this helps! :)