Frameless motors exist precisely so that engineers can build custom joint architectures around them - and this CubeMars demo shows the concept end to end: a customized RO frameless motor paired with a self-assembled cycloidal reducer, running as a complete joint.

What the Video Shows

The footage focuses on the paired system’s motion quality: precision, smooth rotation and high-performance operation of the motor-reducer combination. For teams considering frameless-plus-custom-reducer architectures, it is a compact visual reference of what the integration looks like in motion.

Original Video

Source: CubeMars Official YouTube Channel
Video: CubeMars RO Frameless Motor Demo | Cycloidal Reducer in Action

Engineering Context

Cycloidal (cyclloid-gear) reducers offer high reduction ratios, torsional stiffness and shock-load tolerance in a short radial package - a common choice for precision joints. Pairing one with a frameless stator-rotor set like the RO series lets the reducer be designed around the load rather than around a catalog motor’s flange. CubeMars also offers customization options for the RO frameless platform, which the video description highlights.

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Conclusion

Where a fully custom joint is being weighed against off-the-shelf integrated actuators, this demo is a good illustration of the middle path: catalog frameless motor, custom reducer, joint geometry matched exactly to the payload.