3D Models of Gear Reducers and Gearboxes to Print
This collection brings together STL files for gear reducers of several types: worm, planetary, helical and bevel gearboxes, along with cutaway versions and motor-mounted units. It helps when you need a printed reduction stage for a mechanism or a visible model of how gearing works. Since the parts are made on a 3D printer, scale and shaft fit matter from the start. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.
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Auswahlregeln: Polyzon-Redaktion · Text aktualisiert: 13.10.2026
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Alle Modelle dieser Sammlung
Промышленный конический редуктор / зубчатый редуктор (в разрезе)

Worm-Gear Reducer
775 мотор-редуктор
Промышленный цилиндрический редуктор / зубчатый редуктор (в разрезе)

Helical Bevel Gear Reducer

Редуктор 1\36

Modular Gear Reducers
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Мотор-редуктор MK.1 VER.1.1

Планетарный редуктор мощный

Epicyclic Bevel Gear Reducer
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Редуктор двигателя Редукция 1:6,5

Single Stage Reducer

Parametric Universal Pipe Adapter / Reducer
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Редуктор Nema 17 с прямым углом и спиральными коническими шестернями

Worm Gear Reducer NMRV030
Fully-functional Hand-cranked Hypocycloid Speed Reducer Model

Modular Planetary Gearbox Reducer / Increaser

FlashForge AD5X Rear Cover and Noise Reducer

Gearbox Reducer
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Редуктор с червячной передачей

Cycloidal Speed Reducer in OpenSCAD

Blackout Roller Blind Light Gap Reducer
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775 мотор-редуктор
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КАМАЗ 6350 8x8: мотор-редуктор
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Редуктор для двигателя 775 1:15

Speed reducer with Worm gears
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Планетарный редуктор мини-мотора 1:4.7

Concentric Reducer/Adapter Generator

Injection Pain Reducer

Nema 17 Stepper 5:1 Planetary Reducer
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Навесной редуктор Micro-Servo (SG90)

Планетарный редуктор под 280 мотор

Мотор-редуктор MOTOVARIO NMRV 63-10-140-FC-B3-1.1-66-380-50

WORM GB,SPEED REDUCER, GEAR BOX, 2020 SOLIDWORKS GEARBOX,RED GEAR BOX

Stackable Planetary Gear Mechanism (Reducer)

Worm Gear Reducer
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WARHAMMER 40,000.Adeptus Mechanicus.Symbol Ordo Reducer
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Полуофициальный карманный редуктор
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Червячный редуктор 30:1
Universal reducer nema17
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Шаговый двигатель NEMA17 Планетарный редуктор GEARBOX 1:5

Flashforge 5M Pro Fan Noise Reducer
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Металлический редуктор заднего моста Щетка
Industrial Worm Gearbox / Gear Reducer (Cutaway version)
Industrial Spur Gearbox / Gear Reducer (Cutaway version)
«3D Models of Gear Reducers and Gearboxes to Print»
Worm reducers appear both as complete housings and as cutaway display pieces, while planetary and epicyclic sets are usually assembled from several stacked stages. Helical, bevel and modular gearboxes differ mainly in how their axes are arranged: parallel, crossing or at a right angle. Motor-mounted versions pair a small electric motor with a reduction stage, and hand-cranked models show the same kinematics without any drive.
On the author's model page, look at the stated size and gear ratio, the number of parts and how they go together, and whether supports are needed for the housing or the teeth. Check the material and settings the author lists, because thin gear teeth and long shafts behave differently in rigid and in tougher filaments. Photos of real prints help you judge clearances and whether the parts were scaled after printing.
To narrow the results, try synonyms such as gearbox, speed reducer, transmission or gear train, and add the type you need: worm, planetary, cycloidal, bevel or spur. Related topics include stepper motor mounts, robotics joints and RC drivetrains, which often contain a reduction stage. Adding a ratio, a shaft diameter or a part count to the query usually cuts the list down further.
Häufige Fragen
What is the difference between a reducer and a gearbox?
How do I pick a gear ratio for a printed reducer?
Do printed gear reducers need supports?
How is a printed reducer attached to a motor?
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