The CubeMars RI20 KV600 is the smallest motor in CubeMars’ RI frameless family, and the official video frames it clearly: smaller size, higher performance. It targets high-performance robotic applications that need torque density, fast response and precise motion control inside a very tight radial envelope.
What the Video Shows
The product introduction runs through the RI20 KV600’s key features - high torque density, low cogging torque, a frameless design for flexible system integration, and a compact structure aimed at space-limited applications such as humanoid robot joints and robotic arms.
Original Video
Source: CubeMars Official YouTube Channel
Video: CubeMars RI20 KV600 | Next-Generation Frameless Torque Motor for Robotics
Product Featured: CubeMars RI20 KV600
With a 25 mm diameter, 14.5 mm axial length and only 20 g of weight, the RI20 KV600 is built for integration directly into a joint assembly rather than bolted on beside it. Official data lists the following key figures:
Product Details
| Specification | Details |
|---|---|
| Manufacturer | CubeMars |
| Product | RI20 KV600 Frameless Torque Motor |
| Category | Frameless torque motor (inrunner) |
| Rated Voltage | 16 V |
| Rated Torque | 0.024 Nm |
| Peak Torque | 0.072 Nm |
| Rated Speed | 7452 rpm (no-load 9600 rpm) |
| Diameter | 25 mm |
| Length | 14.5 mm |
| Weight | 20 g |
| KV | 600 rpm/V |
| Applications | Robot joints, humanoid robots, robotic arms |
Specifications sourced from the official CubeMars product data.
Explore on ToBMS
- Explore CubeMars RI20 KV600 Frameless Torque Motor →
- Explore BLDC motors for humanoid robots →
- Explore BLDC motors for robot arms →
- View the CubeMars manufacturer profile on ToBMS →
Conclusion
For wrist joints, finger drives, gimbals and other compact rotary axes, the RI20 KV600 shows how much performance can now be packaged into a 20 g frameless stator-rotor set. The official video is a quick way to see the design intent; the ToBMS product page carries the full specifications.
