What’s the real difference between a cycloidal pinwheel reducer and a harmonic reducer? This foreign maker 3D‑prints both models to show their internal structures and working principles side by side.

In this video, you’ll see:

• How the cycloidal disc meshes with the pinwheel for large ratio reduction

• How the wave generator, flex spline, and circular spline work together in a harmonic drive

• Structural comparison and transmission principle explained clearly

Perfect for engineers, robotics enthusiasts, or anyone curious about precision speed reducers. Watch the 3D‑printed models in action and get a visual grasp of these two popular reducer types.

💬 Drop your questions in the comments – we’d love to hear your thoughts!