CubeMars RI115-PH KV40 Motor
CubeMars RI115-PH KV40 Motor
Product Description
The RI115-PH KV40 is a potted frameless inrunner torque motor from CubeMars' RI series, engineered for high-reliability applications in space-constrained systems such as robotic joints, exoskeletons, collaborative arms, wheeled robots, and mobile platforms.
Utilizing advanced potting technology, the motor enhances mechanical robustness, thermal endurance, and long-term operational stability. Its electromagnetic design delivers approximately 25% higher torque and power density compared to conventional designs. With a continuous torque of 5.5 N·m, peak torque up to 16 N·m, and compact dimensions of Φ115 × 38.1 mm, the RI115-PH KV40 offers a premium drive solution balancing performance, reliability, and spatial efficiency.
Core Specifications
- Motor Dimensions: Φ115 × 38.1 mm
- Hollow Bore Diameter: 74 mm
- Weight: 1108 g
- Peak Torque: 16 N·m
- No-load Speed: 1920 rpm @ 48V
Product Highlights
- Potted Construction: Encapsulation of windings significantly improves mechanical integrity and environmental resilience against moisture, dust, and vibration
- High Torque Density: Optimized magnetic circuit and winding layout enable higher torque and power output within a compact envelope
- Integrated Hall + Temperature Sensors: Provide accurate commutation and real-time thermal monitoring for enhanced control precision and system safety
- Refined Structural Design: Stator yoke thickness reduced by 30%, resulting in a slimmer profile ideal for embedded or flush-mount installations
- Flexible Integration: Frameless architecture allows users to customize support structures, flanges, and drivetrain interfaces
Packaging Contents
- RI115-PH KV40 Frameless Motor × 1
- Certificate of Conformance × 1
| PRODUCT PARAMETERS | |||
| Characteristics Overview | |||
| Hall Distribution Angle | 120 electrical degrees | Operating Environment | -20℃~+85℃ |
| Dielectric Strength | 1000VAC/1S | Insulation Level | H |
| Insulation Resistance | 100MΩ, 500VDC | ||
| Electric Parameters | |||
| Motor Weight (g) | 1108 | Speed Constant (rpm/V) | 40 |
| Voltage (V) | 48 | Motor Constant (N·m/√W) | 0.66 |
| Continuous Torque (N·m) | 5.5 | Inertia (g·cm²) | 3461 |
| Peak Torque (N·m) | 16 | Number of Pole Pairs | 20 |
| Max Speed at Continuous Torque (rpm) | 1430 | Phase Resistance (mΩ) | 134 |
| Continuous Current (A) | 20 | Phase Inductance (μH) | 245 |
| Peak Current (A) | 52 (Ref) | Maximum Torque-to-Weight Ratio (N·m/kg) | 15 |
| Torque Constant (N·m/A) | 0.29 | Electrical Time Constant (ms) | 0.0018 |
| Back EMF Constant (V/rpm) | 0.025 | Electromechanical Time Constant (ms) | 0.0008 |











