The best way to export your SolidWorks models to JT
SolidWorks Plugin: JT Exporter Data Translator is the best Plug-in to export JT files using SOLIDWORKS.
Installing this plug-in will add to SOLIDWORKS exports for CATIA V4 3D, CATIA V5 3D, JT, PDF 3D and UG NX 3D.
However, you need a license for each desired export.
Support & Maintenance
Product sales include a 90-days warranty. Additional warranty coverage is available under a separate annual maintenance contract agreement.