Motor Shaft Gears: 3D Printing STL Models
This collection gathers STL files for gears that mount on motor shafts, including spur gears, herringbone gears, compound gearboxes and adapters for small DC and stepper motors. It helps you find a starting point for a repair, a robotics build or a motorized model. Check the shaft diameter and mounting style before you print. 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 14/10/2026
Par où commencer
Tous les modèles de cette collection

Double cylinder steam engine with reverse gear-BOM

Fully 3D Printable 2 Stroke Engine Model
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F21801633%2Fillustration-file%2F39c9cf92-f448-4e89-b5e9-2115243deb4c%2Fliebherr-924-c.jpeg&w=300)
LIEBHERR 924 WHEELED EXCAVATOR 1/14 (LOWER HALF ONLY)

OpenRC standard spur gear for 5mm motor shaft

DC 6V motor gear for 2mm shaft

Gear for 28BYJ-48 stepper motor
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F13410598%2Fillustration-file%2F9bd25a0a-5fb4-402e-b09d-36951b4e716e%2FIMG_20200201_114652.jpg&w=300)
Tumbler cyclone rotary case deburring machiine

OpenRC herringbone spur gear for 5mm motor shaft

ミニ四駆 両軸モーター用ギヤケース

43.33:1 Compound Planetary Gearset, NEMA 17 Mount, No Hardware
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F13791678%2Fillustration-file%2F0b4e2790-bd3b-4ea8-9b2e-905e1828c47d%2Fthumb.jpg&w=300)
3D printed RC truck V3: Gearbox V3A

Spur Gear for 2.3mm Flat Shaft 12V DC Motor (or any)

30:1 Harmonic Gearbox 520 DC Motor 6mm D-Shaft
gear for LEGO DUPLO train motor
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F20111119%2Fillustration-file%2F48803331-05a1-4bee-bbcb-4e32735c6ec6%2FGear_SF_V1.0_Printed.jpg&w=300)
Gearing for motor and power transmission

0.8 MOD gear 22T, 30T, 40T & 60T (for stepper motors fitted with hex shaft coupling connectors)

8t 2m shaft gear for arduino gearbox
Hex Hub for 25mm Gear Motors (4mm Shaft)
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F17518409%2Fillustration-file%2Fb3d612b4-dfae-4ee7-9b49-fda73340efc1%2Fe17a6eca-566e-4baa-984b-aed1c2e80d7e.jpg&w=300)
Walking Gonk Droid Toy

Spur and Herringbone Gears with mounts for Double D shaft motor shaft to .75 inch threaded rod
Magnet Holder for DC Gear Motor Shaft

N20 Gear Motor Shaft Bearing Reinforcement
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F30132041%2Fillustration-file%2F08050e24-bb24-4b45-844f-894d79160c63%2F%25E5%25BE%25AE%25E4%25BF%25A1%25E6%2588%25AA%25E5%259B%25BE_20230916152438.png&w=300)
2204 brushless outrunner motor adapter for FMS FCX24/FCX18
lawn tractor - gear for starter motor
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F20956722%2Fillustration-file%2F48c40022-1fe7-4440-b98f-9134946abced%2F20220104_213520.jpg&w=300)
3D printed robot arm scara version.

JGB37-520 Shaft Hub

holo clock
Porsche 911 Carrera RS (964) – Turtle RC Slot Size (1:32 Scale)

Albero D 5mm

Compact planetary gearbox
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F14815641%2Fillustration-file%2Fae99db85-9c32-4107-9d40-f15443ebb236%2F2c4ed78a6c4e20c9fb6e344672b78a32.png&w=300)
Wall-E Robot w/ electronics /rmx

42步进电机 摆线减速器plus 减速比1:16

RHR-25 2.5" Props for FPV micro drones
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F17443333%2Fillustration-file%2F7775e370-5b45-4ce7-8d9f-0b212e036487%2FScreenshot_20220304-213753233.jpg&w=300)
1 Module 10T - 10 mm DC motor gear (for 3,15 shaft - 2,5 mm canal)

Ritzel 15 Zähne welle 2mm Gewinde M3 370 Motor

Gear coupling for 5mm shaft
Porsche 964 Turbo S – Turtle RC Slot Size (1:32 Scale)

N20 Geared motor with Encoder Mount

Customizable Gear Puller that actually works!!!
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F22411107%2Fillustration-file%2F4f26f392-5421-4ac7-b5f6-cc2b40c5df95%2F35mWithGear_v2.png&w=300)
28BYJ-48 Stepper Motor Drive Gear

N20 Reduction Gear Motor Mount for Brick Technic

Motor Support for GEAR-BOX MOTOR
%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F15589951%2Fillustration-file%2Fa541f20e-1531-4874-a06c-f7064831ef8f%2F306928621_799026244763861_2977796932856088313_n.jpg&w=300)
Losi Mini T or B 2.0 FAST GEARS

Motor Shaft Gear for the KCS12 4*AA Screwdriver
«Motor Shaft Gears: 3D Printing STL Models»
Gear models in this topic range from simple spur and herringbone gears to compound planetary sets, harmonic reducers and gearbox housings. Some are standalone gears shaped around a particular shaft profile, while others are complete assemblies with multiple stages. Small DC motor gears often use a press fit or a D-shaped shaft, whereas stepper motor versions may include a coupling or a mounting pattern.
When choosing a model, look at the shaft diameter and profile, the tooth count and module or pitch, and whether the gear is meant to mesh with another part. Check the number of parts, assembly steps, and whether the author lists supports, material and slicer settings. Photos of real prints can show how the teeth and bore turned out.
To refine a search, try terms such as spur gear, herringbone gear, pinion, gearbox, reducer, shaft adapter, D-shaft, or keyed shaft. Related topics include robotics, RC vehicles, stepper motor mounts and motorized scale models. Adding the shaft size or motor type to the query usually narrows the results.
Questions fréquentes
How do I choose a gear for a motor shaft?
What should I check on the author's model page?
Do these gears need supports when printed?
Can I use these models for robotics or RC projects?
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.


%2Fhttps%3A%2F%2Ffbi.cults3d.com%2Fuploaders%2F14853068%2Fillustration-file%2F39b4ca0b-78e3-4c81-90b5-3bd540f0ac5a%2Fezgif.com-optimize.gif&w=640)






