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Crankcase and Crank Guard STL Models for 3D Printing

This collection gathers STL files for crank guards, crankcase covers and similar shields used on bicycles, motorcycles, scooters and small machines. Most of them are small shells or sleeves that bolt, clip or strap over a moving part. It is useful when a part needs a cover that the original design did not include. 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 · 43 modèles sur 3 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 11/10/2026

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À propos de la catégorie

«Crankcase and Crank Guard STL Models for 3D Printing»

The models differ mainly by scale and mounting. Bicycle guards are thin shells that sit over a crank arm or chainring, while motorcycle and enduro covers are larger housings around an engine case or flywheel. Scooter and board parts often enclose a belt or motor, and small-engine covers fit a specific housing shape. Furniture crank and handle covers are simpler sleeves, usually printed in a flexible filament.

Before printing, read the author's page: overall size and scale, number of separate parts and how they join, and whether supports are needed for the chosen orientation. Check the material and settings the author lists, and look at photos of real prints to judge wall thickness and clearance around moving parts. For parts that sit close to heat or vibration, confirm the mounting method and the gap left for the original bolts or clips.

Search terms vary by region and vehicle, so try several: crank guard, crankset cover, chainring guard, bash guard, engine cover, flywheel cover, belt cover, skid plate. Adding a material such as TPU, PETG or ASA narrows the list, as does the mounting type, for example bolt-on or clip-on. Related topics include drivetrain parts, scooter bodies and chainsaw housings, which often share the same cover geometry.

FAQ

Questions fréquentes

What is a crankcase guard used for?
It shields a crank arm, chainring, belt or engine case from impacts, dirt and chain slap. Some versions also close an opening left in the original housing.
Which filament works for a crank guard?
Rigid guards are often printed in PETG or ASA, while sleeves and flexible covers use TPU. The author's page usually states the material and settings used for the shown print.
Do these models need supports?
It depends on the shape and the orientation you choose. Flat shells can often be printed without them, while covers with deep cavities may need support on overhangs.
How do I find a guard for my bike or scooter?
Search by the drivetrain or vehicle name together with words like guard, cover or protector. If nothing matches, look at similar models and compare the mounting points and dimensions.
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