The CubeMars RO80‑KV105 Lite w/o Hall is a lightweight variant in the RO series—a streamlined frameless outrunner torque motor designed for space- and weight-sensitive applications. By removing the Hall sensors, this version offers a more compact and cost-effective solution while preserving key performance features: ultra-low cogging torque and a large-diameter hollow shaft.
Operating at a rated voltage of 48 V, it delivers a continuous torque of 1.3 N·m, peak torque up to 4 N·m, and a rated speed of approximately 3600 rpm, all within a total weight of just 265 g. This makes it ideal for high-response systems with tight spatial constraints, such as exoskeletons, collaborative robot arms, medical robots, and compact actuation modules.
Motor Dimensions: Φ88.6 × 17.7 mm
Weight: 265 g
Peak Torque: 4 N·m
No-Load Speed: 5040 rpm
Ultra-Low Cogging Torque: Significantly reduced compared to conventional motors, enabling smoother low-speed motion and finer control
Large Hollow Bore: Generous central through-hole facilitates cable routing, direct shaft coupling, or integration with harmonic drives—maximizing mechanical design flexibility
Lightweight & Simplified Construction: Removal of Hall sensors and structural simplification reduce weight to ~265 g, perfect for compact robotic joints and portable systems
High Torque Density: 1.3 N·m continuous / 4 N·m peak torque supports demanding tasks like joint actuation and end-effector positioning
Broad Application Scope: Tailored for exoskeleton robots, collaborative arms, medical devices, quadrupedal platforms, and lightweight AGVs
RO80‑KV105 Lite w/o Hall Frameless Outrunner Torque Motor ×1
Certificate of Conformance ×1
High Adaptability
Large Hollow
stability
lifespan
temperature
orientation| RO80 KV105 Standard Version |
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| RO80 KV105 Lite Version |
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| RO80 KV105 Standard Version | |||
| Application | CobotArm | Insulation Class | F |
| Driving Way | FOC | Insulation High-Voltage | 500V |
| Operation Ambient Temperature | -20℃~50℃ | Insulation Resistance | 10MΩ |
| Winding Type | delta | Cogging Torque | 24N.mm |
| Pole Pairs | 21 | Inertia | 2612gcm² |
| Maximum Torque Weight Ratio | 11.36Nm/kg | Weight | 352g |
| Rotor Weight | 148g | Stator Weight | 204g |
| Hall Temperature Sensor Wire | 30#AWSilicone Wire 100±5mm Tinning 5±2mm | Lead-Out | Three-Phase Motor Lead-Out: Enameled Wire Straight Out 100±5mm Tinned5±2mm |
| Three-Phasewire | 3.5mm | ||
| RO80 KV105 Lite Version | |||
| Application | Cobot Arm | Insulation Class | F |
| Driving Way | FOC | Insulation High-Voltage | 500V |
| Operation Ambient Temperature | -20℃~50℃ | Insulation Resistance | 10MΩ |
| Winding Type | delta | Cogging Torque | 24N.mm |
| Pole Pairs | 21 | Inertia | 1600gcm² |
| Rotor Weight | 85g | Weight | 265g |
| Maximum Height of Enameled WireBulge | 6mm | Stator Weight | 180g |
| Three-Phasewire | 3.5mm | Lead-Out | Three-Phase Motor Lead-Out: Enameled Wire Straight Out 100±5mm Tinned 5±2mm |
| Electric Parameters | |||
| Rated Voltage | 48V | Ke | 9.07V/krpm |
| No-Load Speed | 5040rpm | Phase To Phase Resistance | 120mΩ |
| Rated Torque | 1.3Nm | Phase To Phase Inductance | 103μH |
| Rated Speed | 3600rpm | Km | 0.25Nm/√W |
| Rated Current | 15ADC | Mechanical Time Constant | 2.95ms |
| Peak Torque | 4Nm | Electrical Time Constant | 0.86ms |
| Peak Current | 50ADC | Kt | 0.087Nm/A |
| Kv | 105rpm/V | ||
| category | Model | Rated Voltage (V) | 最大持续功率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 | Hall Sensor | Temperature Sensor |
| RO Series Frameless Outrunner Torque Motor | RO100 KV55-Standard-with-hall | 48 | 838 | 4 | 20 | 2000 | 12 | 62 | 2550 | 143 | 137 | 21 | 710 | Ф113.5*36.2 | Yes | Yes |
| RO Series Frameless Outrunner Torque Motor | RO100 KV55 Lite without hall | 48 | 838 | 4 | 20 | 2000 | 12 | 62 | 2550 | 143 | 137 | 21 | 525 | Ф108.3*28 | No | No |
| RO Series Frameless Outrunner Torque Motor | RO80 KV105-Standard-with-hall | 48 | 490 | 1.3 | 15 | 3600 | 4 | 50 | 5040 | 120 | 103 | 21 | 352 | Ф92.6*26.4 | Yes | Yes |
| RO Series Frameless Outrunner Torque Motor | RO80 KV105 Lite without hall | 48 | 490 | 1.3 | 15 | 3600 | 4 | 50 | 5040 | 120 | 103 | 21 | 265 | Ф88.6*17.7 | No | No |
| RO Series Frameless Outrunner Torque Motor | RO60 KV115-Standard-with-hall | 48 | 352 | 0.8 | 8.5 | 4200 | 2.4 | 40 | 5520 | 300 | 395 | 14 | 248 | Ф73.8*23 | Yes | Yes |
| RO Series Frameless Outrunner Torque Motor | RO60 KV115 Lite without hall | 48 | 352 | 0.8 | 8.5 | 4200 | 2.4 | 40 | 5520 | 300 | 395 | 14 | 195 | Ф70.5*15 | No | No |
