Loisirs et makers

3D Models of Actuators: Linear, Servo and Gear Types

This collection gathers 3D models of actuators: linear units, servo-driven mechanisms, geared drives and replacement parts for valves and flaps. Most of them are multi-part assemblies, so they are useful when you want to build motion into a project rather than print a static object. Each listing points to a model page where the author describes the parts, the hardware and the settings used for 3D printing. 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.

Une collection Polyzon · 46 modèles sur 4 plateformes

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

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«3D Models of Actuators: Linear, Servo and Gear Types»

The models differ mainly in how motion is produced. Some rely on a hobby servo pushing a slider along a rail, others use a motor with a gearbox, a rack-and-pinion pair or a cycloidal reduction stage to trade speed for force. There are also simpler mechanical versions without any electronics, and replacement actuators shaped to fit an existing valve or air flap. Grippers and small mechanism toys often include an actuator as one part of a larger assembly.

Before printing, read the model page for the details that decide whether the build works: overall size and stroke, number of parts and how they join, whether fasteners, bearings or a specific servo and motor are required, and whether supports are needed on overhangs. Check the material and layer settings the author lists, since thin gear teeth and long sliding surfaces behave differently in PLA, PETG or resin. Photos of real prints show how the parts fit together better than renders do.

If the results are too narrow, try related wording: linear actuator, servo bracket, lead screw, rack and pinion, gearbox, reduction drive, slider, push rod. Searching for the mechanism rather than the part often surfaces more options, for example gripper, lifting table or valve flap. Combining a mechanism term with a hardware name such as a small servo or a geared motor also helps narrow the list.

FAQ

Questions fréquentes

What is the difference between a linear actuator and a servo actuator?
A linear actuator converts rotation into straight movement, usually with a screw, rack or slider. A servo actuator describes the drive source instead: a hobby servo is used to move the mechanism, and the output can be linear or rotary.
Which parts do I need besides the printed files?
Most designs call for a servo or geared motor, screws or bolts, and sometimes bearings, shafts or a guide rail. The model page lists the exact hardware and dimensions the author used.
How do I make the moving parts fit together?
Check the clearances stated on the model page and the settings used for the print. Small variations in extrusion or shrinkage affect sliding fits, so a test print of one joint before the full assembly saves time.
Can these models be scaled up or down?
Scaling changes wall thickness, gear meshing and the space for hardware, so it usually requires adjusting the model rather than only the slicer settings. The author's page indicates the size the parts were designed around.
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