Outils et équipement

39-Tooth Gear STL Models for 3D Printing

This collection covers 39-tooth gear STL models and related gear types for 3D printing. You will find spur gears, helical and conical gears, timing pulleys, mixed gear sets, and replacement gears for devices and toys. It helps you compare tooth profiles, mounting options, and print orientation before you download. 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 13/10/2026


Collection

Par où commencer

Tous les modèles de cette collection

À propos de la catégorie

«39-Tooth Gear STL Models for 3D Printing»

Gear models in this collection range from simple spur gears to helical, conical, and pulley-style parts. Spur gears are flat with straight teeth, while helical gears have angled teeth that change how they mesh. Conical gears turn motion between intersecting axes, and timing pulleys use a toothed profile for belts. Mixed gear sets bundle several sizes, and replacement gears are shaped around a specific housing or shaft.

When choosing a model, check the tooth profile, module or pitch, bore diameter, and whether the author includes a shaft mount or set screw. Look at the number of parts and whether assembly is required, and read the listed material and slicer settings. For printing, consider layer orientation, support needs, and whether the gear will carry load or only turn a light mechanism. Photos of real prints on the model page can show how the teeth and bore came out.

To refine the search, try synonyms such as cog, pinion, spur gear, helical gear, and timing pulley. Related topics include gearbox parts, RC car gears, appliance replacement gears, and toy gears. You can also search by the mechanism or device the gear belongs to, or by the tooth count and bore size you need.

FAQ

Questions fréquentes

What does a 39-tooth gear model include?
A gear model usually includes the gear body, bore, and any hub or mounting feature. Some files add a matching pinion or a set of related sizes.
What should I check before printing a gear?
Check the module or pitch, tooth count, bore diameter, and mounting style. Also review the author's material and slicer notes, and look for photos of printed parts.
Can a 39-tooth gear be scaled?
Scaling changes the tooth size and pitch, so it may not mesh with other gears. If the model is parametric, adjust the tooth count or module instead of scaling.
How do I find matching gears?
Search for the same module or pitch and tooth count, and check the bore and hub dimensions. Related terms like pinion, spur gear, and timing pulley can help you find matching parts.

Toutes les catégories de modèles 3D

Le catalogue complet des thèmes, de la maison à la CNC, avec une recherche sur tous les sites connectés.

Ouvrir le catalogue des catégories