RI70 without hall sensor

RI70 with hall sensor

The RI70 KV95 inner-rotor frameless torque motor is a high-precision joint motor and brushless DC motor, ideally suited for industrial automation and robotics applications. Specifically engineered for demanding high-performance use cases—such as exoskeletons, quadruped robots, legged locomotion platforms, robotic arms, and collaborative industrial manipulators—this motor delivers exceptional performance in a remarkably compact package.
CubeMars’ RI70 KV95 stands out with its superior electrical characteristics, lightweight construction, and minimized footprint. Its width and thickness are meticulously optimized and support flexible customization, enabling seamless integration into tight or complex mechanical spaces.
Moreover, this frameless inner-rotor motor excels in both torque delivery and motion control precision. It maintains high efficiency while providing stable, responsive power output.
Motor Dimensions: Φ76 × 24 mm
Through-hole Diameter: 38 mm
Motor Weight: 270.4 g
Peak Torque: 2.68 Nm
No-load Speed: 3912 rpm@48V
High Torque Density: Delivers robust output in space-constrained robotic joints and mechanisms
Low Cogging Torque: Advanced electromagnetic design ensures smoother motion and higher control accuracy
Frameless Architecture: Enables user-defined mounting structures, flange interfaces, or gear integration for maximum design freedom
Wide Voltage Compatibility: Supports 24 V to 48 V systems, making it adaptable across diverse robotic platforms
Compact Form Factor: With an outer diameter of ~76 mm and thickness of ~24 mm, it integrates easily into densely packed assemblies
RI70 KV95 Frameless Motor ×1
Certificate of Conformance ×1





RI70 without hall sensor

RI70 with hall sensor

| Application | Cobot Arm/Exoskeleton | Insulation Class | C |
| Driving Way | FOC | Insulation High-Voltage | 1000V 5mA/2s |
| Operation Ambient Temperature | -20℃~50℃ | Insulation Resistance | 1000V 10MΩ |
| Winding Type | Delta | Phase | 3 |
| Pole Pairs | 14 | ||
| Electric Parameters | |||
| Rated Voltage(V) | 24/36/48 | Ke(V/krpm) | 11.69 |
| No-Load Speed(rpm) | 1956/2934/3912 | Phase To Phase Resistance(mΩ) | 418 |
| Rated Torque(Nm) | 0.94 | Phase To Phase Inductace(μH) | 622.7 |
| Rated Speed(rpm) | 1270/1990/2710 | Inertia(gc㎡) | 92.15 |
| Rated Current(ADC) | 7.1 | Km(Nm/√W) | 0.2011 |
| Peak Torque(Nm) | 2.68 | Mechanical Time Constant(ms) | 0.23 |
| Peak Current(ADC) | 21 | Electrical Time Constant(ms) | 1.49 |
| Kv(rpm/V) | 95 | Weight(g) | 270.4 |
| Kt(Nm/A) | 0.130 | Maximum Torque Weight Ratio(Nm/Kg) | 9.91 |
| Connector | |||
| U | Black+16#Silicone Wire | Hv | Green+30#Silicone Wire |
| V | Yellow+16#Silicone Wire | Hw | Blue+30#Silicone Wire |
| W | Red+16#Silicone Wire | VCC GND | Red+30#Silicone Wire Black+30#Silicone Wire |
| Hu | Blue+30#Silicone Wire | Correspondence WCC Correspondence | Hu-U Hv-V Hw-W eg: Hu-U Hv-V Hw-W |

| category | Model | Rated Voltage (V) | Rated Power (W) | Rated Torque (Nm) | Rated Current (A) | Rated Speed (RPM) | Peak Torque (Nm) | Peak Current (A) | No-load Speed (RPM) | Phase to Phase Resistance (mΩ) | Phase to Phase Inductance (μH) | Pole Pairs | Weight (G) | Size (diameter *length) MM |
| RI Potting Series | RI115-PH KV40 | 48 | 823 | 5.5 | 20 | 1430 | 16 | 52 | 1920 | 134 | 245 | 20 | 1108 | Ф115*38.1 |
| RI Potting Series | RI85-PH KV85 | 48 | 637 | 2 | 16 | 3042 | 5 | 44 | 4080 | 138.5 | 239.4 | 14 | 411 | Ф85*27.3 |
| RI Potting Series | RI75-PH KV70 | 48 | 297 | 1.2 | 7.28 | 2365 | 3.8 | 24.2 | 3360 | 495 | 673 | 14 | 348 | Ф70*31.8 |
| RI Frameless Series | RI100 KV105 | 24/36/48 | 252 | 1.76 | 13.6 | 1370/2100/2825 | 4.95 | 38.6 | 2184/3276/4368 | 126 | 366.7 | 14 | 500 | Ф104*26 |
| RI Frameless Series | RI80 V2.0 KV75 | 24/36/48 | 172 | 1.45 | 9.4 | 1135/1785/2430 | 4.1 | 9.4 | 1480/2220/2960 | 330 | 510 | 8 | 411 | Ф85*27 |
| RI Frameless Series | RI70 KV95 | 24/36/48 | 125 | 0.94 | 7.1 | 1270/1990/2710 | 2.68 | 21 | 1956/2934/3912 | 418 | 622.7 | 14 | 270.4 | Ф76*24 |
| RI Frameless Series | RI60 KV120 | 24/36/48 | 85 | 0.57 | 5.6 | 1440/2320/3190 | 1.63 | 16.8 | 2532/3798/5064 | 900 | 877.5 | 14 | 155.9 | Ф60*23 |
| RI Frameless Series | RI50 KV100 | 24/36/48 | 66 | 0.58 | 4.8 | 1090/1860/2600 | 1.67 | 14.8 | 2004/3006/4008 | 1420 | 1500 | 7 | 180.8 | Ф54*27 |