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3D Models of Gears and Gearbox Parts

This collection brings together STL files for gears, gearboxes and related mechanical parts. You will find spur gears, compound gears, RC drivetrain pieces, aircraft panel details, fidget mechanisms and replacement gears for small devices. It helps you compare shapes, tooth counts and mounting options before slicing for a 3D printer. 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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Seçim kuralları: Polyzon editör ekibi · Metin güncellendi: 15.10.2026

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«3D Models of Gears and Gearbox Parts»

Gear models range from single spur or compound gears to complete gearbox assemblies and drivetrain cases. Aircraft panel plates and cockpit controls are mostly flat or shell-like parts, while fidget toys combine a gear ring with moving elements. Replacement gears for household devices often mirror a specific worn part, so their shape and shaft interface matter more than general appearance.

On the author's page, check the module or pitch, tooth count, bore diameter and overall thickness before you commit to a print. Look at how the part is oriented, whether supports are needed, and what material and settings the author lists. Photos of real prints can show whether the teeth and mounting features come out clearly on your setup.

If a search for a specific gear returns few results, try broader terms such as spur gear, pinion, compound gear, gearbox or transmission part. Related searches can include RC drivetrain, aircraft detail, fidget mechanism, replacement gear or planetary set. Adding the module, tooth count or shaft size to the query can narrow the list, while removing brand names often widens it.

FAQ

Sıkça sorulan sorular

What should I check before printing a gear model?
Check the module or pitch, tooth count, bore diameter, thickness and mounting features first. Then review the author's notes for orientation, supports, material and settings, and look at photos of real prints.
How do I find a matching replacement gear?
Measure the original part: tooth count, outer diameter, bore, thickness and shaft shape. Search with synonyms like spur gear, pinion, drive gear or replacement gear, and compare the listed dimensions.
Can I scale a gear model to fit my project?
Scaling changes the tooth size and center distance, so a scaled gear may not mesh correctly with another part. It is better to match the module or pitch and adjust the surrounding assembly if the source files allow it.
What is the difference between spur, compound and planetary gears in these models?
Spur gears are single-row gears, compound gears combine two gears on one axis, and planetary sets use a sun, planet and ring arrangement. The choice affects assembly complexity and the space the mechanism needs.
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