What is JT File Extesion – How to Open jt File Format

What is JT File Extesion

JT (Jupiter Tesselation) is an ISO-standardized 3D data format and is in industry used for product visualization, collaboration, CAD data exchange, and in some also for long-term data retention. It can contain any combination of approximate (faceted) data, boundary representation surfaces (NURBS), Product and Manufacturing Information (PMI), and Metadata (textual attributes) either exported from the native CAD system or inserted by a product data management (PDM) system.

JT files are used in product lifecycle management (PLM) software programs and their respective CAD solutions, by engineers and other professionals that need to analyze the geometry of complex products. The format and associated software is structured so that extremely large numbers of components can be quickly loaded, shaded and manipulated in real-time. Because all major 3D CAD formats are supported, a JT assembly can contain a mixture of any combination which has led to the term “multi-CAD”. As JT is typically implemented as an integral part of a PLM solution, the resulting multi-CAD assembly is managed such that changes to the original CAD product definition files can be automatically synchronized with their associated JT files resulting in a multi-CAD assembly that is always up-to-date.

Because JT files are inherently “lightweight” (~1-10% of the size of a CAD file) they are ideal for internet collaboration. With the growing trend toward globalization, more companies are leveraging resources wherever they are available in the world. Collaboration using JT allows companies to send 3D visualization data to suppliers and partners much more easily than sending the associated “heavy” CAD files. In addition, real-time, on-line collaboration is easier because the amount of information sent back-and-forth across the internet is reduced. Finally, JT provides an inherent security feature such that intellectual property does not have to be shared with inappropriate parties. As indicated above, JT can contain any combination of data such that the right amount of information can be shared without exposing the underlying proprietary design definition information.

jt file viewer
jt file viewer

The JT data model is capable of representing a wide range of engineering data. This data can be very lightweight, holding little more than facet data or it can be quite rich, containing complete NURBS geometry representations along with product structure, attributes, meta data and PMI. It also supports multiple tessellations and level-of-detail (LOD) generation.

Product Structure – assembly, part, instance
Facet – polygon, polygon set
Lighting – light set, point light, infinite light Textures
Precise Geometry and Topology – point, curve, surface, face, loop, edge, vertex
Boundary representation (B-rep) could used either JT B-rep and XT B-rep (Parasolid) format, STEP B-rep will be supported by ISO JT V2
Geometry Primitives – box, cylinder, pyramid, sphere
Product Manufacturing Information (PMI) – GD&T, 3D annotations
Attributes / Properties – text, integer, float, date, layers

How to Open JT File Format :

Program that Open JT Files :

  • Siemens PLM NX
  • Siemens PLM I-DEAS
  • Siemens PLM Solid Edge
  • Dassault Systemes CATIA
  • Parametric Technology Creo
  • Autodesk Inventor 2018

Opening JT Files in SOLIDWORKS

To open JT files in SOLIDWORKS:

  • Click Open (Standard toolbar) or File > Open.
  • In the dialog box, in Files of type, select JT (*.jt).
  • In the dialog box, browse to the desired file.
  • Click Open.
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