Loisirs et makers

3D Models of Differential Gear Mechanisms

This collection gathers STL files for differential gear mechanisms, including automotive-style units, planetary and spur gear layouts, RC drivetrain parts, and toy-brick style gear sets. It helps you compare how different differential designs are modeled before you choose a file for 3D printing. Some entries are simplified demonstrations, while others belong to larger vehicle or machine builds. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Le texte de cette collection est rédigé en anglais ; la recherche, elle, fonctionne dans toutes les langues.

Comment cette collection est composée

Polyzon compose cette collection à partir des résultats de recherche des plateformes connectées. Les doublons et les modèles sans aperçu sont retirés, les correspondances faibles sont placées à la fin, et le reste suit l’ordre de la recherche. Les modèles appartiennent à leurs auteurs : consultez les conditions sur la page de chaque modèle.

Règles de sélection : la rédaction de Polyzon · Texte mis à jour le 11/10/2026


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«3D Models of Differential Gear Mechanisms»

The collection covers several families of differential models. Automotive-style assemblies often show a ring gear, pinion, side gears, and a housing, while planetary and spur gear versions use different internal arrangements to split torque. Educational and desktop mechanisms usually reduce the part count so the motion is visible. RC and model vehicle parts tend to be smaller and may follow a specific scale or axle layout.

When choosing a file, check the stated size and scale, the number of parts, and whether assembly is required. Look at the author's notes for the material and print settings they used, and for photos of real prints. If the model includes gears, confirm the tooth count, module, and clearances, because these determine how the parts mesh. Supports may be needed for overhangs, so review the orientation shown in the files.

To refine the search, try related terms such as gear mechanism, planetary gear set, spur gear, open differential, limited-slip differential, axle, and drivetrain. You can also search by scale or use case, for example RC car, educational model, or desktop fidget. Combining a mechanism term with a vehicle type or gear type usually narrows the results. If you need a specific layout, search for the gear arrangement rather than the vehicle name.

FAQ

Questions fréquentes

What is a differential gear mechanism?
A differential is a gear arrangement that allows two output shafts to turn at different speeds while receiving input from a single source. In 3D printing, models often simplify this into a few gears and a housing so the motion can be seen.
How do I choose the right scale for a differential model?
Start with the space available on your 3D printer and the size of the gears you want to handle. Check the author's stated dimensions and compare them with the axle or chassis you plan to use. Smaller scales may need finer nozzle sizes and tighter tolerances.
What should I check before printing a differential?
Review the part count, assembly steps, gear module, and any listed material or settings. Look for photos of printed parts to see how the gears fit together. If the model has moving parts, test the clearances after printing and adjust as needed.
Can a 3D printed differential be used in a running model?
It depends on the design, material, and load it will carry. Many printed differentials are intended for low-load demonstrations or light RC use, so check the author's notes and the intended application. For high-torque applications, metal gears or reinforced designs are often used instead.

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