Lightweight
Turbofan Jet Engine Cutaway
39,382 triangles GLB 2.6 MB
Free Worm Gear Drive 3D Model
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Steel worm and 30 tooth brass worm wheel at 30:1, with a real helical thread and shafts in mint pillow blocks on a yellow base plate.
Free under CC0 for personal and commercial use, no attribution. Download without login as GLB, FBX, BLEND, USDZ or OBJ. Lightweight with 29,768 triangles and 2K textures. It includes 1 movable part as a separate object.
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$0 · CC0CC0: no login, no attribution CC0 1.0
Work with this model
- Open in the 3D Viewer Wireframe, UVs and texture channels
- Change colors in Recolor Studio Recolor it and export a new GLB
- Convert GLB to STL Millimetres and Z-up, with a watertight check
- Convert GLB to OBJ With your own unit, up axis and pivot
- Render a turntable video or GIF Seamless spinning loop as MP4, WebM or GIF
The tools run in your browser and load the web preview of this model. For the full quality files, use the downloads above.
Technical details
- Quality tier
- Lightweight Stylized, 2K or palette textures, game-ready
- Triangles
- 29,768
- Textures
- 2K (2,048 px) Base ColorRoughnessMetallicNormal
- Dimensions
- 0.24 × 0.14 × 0.14 m (W × D × H)
- Moving parts
- Rotor A Separate objects with their own pivot, ready to animate.
- License
- CC0 1.0 · public domain
- Published
- Category
- Tools & Workshop
- Formats
- Origin details are included in LICENSE.txt and manifest.json.
Size comparison
About this model
A worm gear 3d model for slow and strong movements. The single start steel worm has a trapezoidal thread with 20 degree flanks modelled as a true helix, 25 mm pitch diameter and a lead angle of 5.7 degrees. Above it a throated worm wheel with 30 teeth wraps around the worm, its brass rim curved to follow the thread and its teeth tilted by the same lead angle, so every tooth sits in a thread groove. One turn of the worm moves the wheel by one tooth, a ratio of 30:1 at a centre distance of 50 mm. Both shafts run in mint pillow block bearings on a yellow base plate, and the worm shaft ends in a key for a motor or crank. The wheel and its shaft form rotor_a, the worm shaft rotor_b. Size 23.6 x 14.4 x 14.3 cm, 29,768 triangles, 2K PBR textures.
Good for
- Lifting gear or gate drive
- Slow turntable mechanism
- Factory or workshop prop
- Engineering demonstration
Tags
Engine import notes
Unity GLB · FBX
Import the GLB with the glTFast package or use the FBX. 1 m in the file = 1 Unity unit.
Unreal Engine FBX
Use the FBX. The model is built in metres. Unreal works in centimetres and converts on import, so it arrives at real size (0.14 m = 14 cm).
Godot 4 GLB · FBX
Drag the GLB into the FileSystem dock. Godot 4 imports it directly, with materials. The FBX works too (Godot 4.3+ imports it natively).
Blender BLEND · GLB
Open the .blend directly, or import the GLB via File › Import › glTF 2.0.
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