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NEMA 17 3D Models: STL Mounts and Gearboxes

This collection gathers STL files built around NEMA 17 stepper motors: reference bodies for CAD work, mounting brackets, gearboxes and parts for motor-driven mechanisms. It helps when you are fitting a motor into a 3D printer, a camera rig or a small machine and need a starting shape. Every listing links to the source page, where the author describes the part. 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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選定基準：Polyzon編集部 · 本文の更新日：2026年10月11日

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«NEMA 17 3D Models: STL Mounts and Gearboxes»

The models fall into a few groups. Some are plain reference bodies of the motor itself, used as a placeholder inside a larger assembly. Others are brackets and mounts that fix the motor to a frame, gearboxes that trade speed for torque, and couplers or adapters that join the shaft to a lead screw or pulley. Project files show the motor inside a finished mechanism, such as a pump or a roller drive.

When you pick a model, compare it with the motor you actually have. The faceplate size is shared, but body length, shaft diameter, whether the shaft has a flat, and the position of the mounting holes differ between versions. Check whether the file is a solid reference body or a part meant to be printed, and read the author's notes on material, layer height and supports. Photos of printed parts help you judge clearances around the shaft and screw holes.

Search results widen if you try other names for the same hardware: stepper motor, bipolar stepper, or the frame size on its own. Related terms such as planetary gearbox, belt pulley, lead screw coupler, extruder mount or camera slider bring up parts that pair with this motor. Adding a project type — pump, plotter, turntable — narrows the list further.

FAQ

よくある質問

What does NEMA 17 mean?
It is a faceplate size designation for stepper motors. Motors that share it can still differ in body length, shaft, holding torque and connector, so the printed part has to match your exact unit.
Can the motor itself be 3D printed?
No. Printed files in this topic are reference bodies, brackets, mounts, gears, couplers and adapters that go around a purchased motor.
What should I check before printing a mount?
Hole spacing, shaft diameter and flat, the gap between the motor body and the frame, and the wall thickness around screw holes. The author's notes and photos of printed parts show how these were handled.
How do I find more parts for this motor?
Try synonyms such as stepper motor or bipolar stepper, and related terms like planetary gearbox, pulley, coupler or extruder mount. Naming the machine you are building narrows the results.
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