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Big Motors > AirDrive (Drones/Fixed-wing)
The D4114 340KV brushless motor delivers exceptional power density and extended service life for heavy-lift multirotor platforms. Engineered with a disc-type external rotor design and aerospace-grade components, it provides superior torque efficiency and thermal management. The motor's optimized electromagnetic circuit and precision construction ensure reliable high-power performance in demanding aerial applications requiring sustained operation and minimal vibration for professional payloads.
| Parameter | Specification |
| Motor Type | 3-Phase Disc-Type BLDC (External Rotor) |
| Protection Rating | IP67 (Dust/Water Immersion Protected) |
| Rated Voltage | 8-12S LiPo (14.8V–22.2V) |
| Continuous Power | 566W @ 22.2V |
| Max Torque | 8.5Nm (Peak) / 5.2Nm (Continuous) |
| Speed Range | 1,200–32,000 RPM (ESC Adjustable) |
| KV Rating | 340-400 RPM/V |
| Phase Resistance | 0.008Ω (Phase-to-Phase) |
| Shaft Diameter | 10.0mm (Titanium Alloy, M10 Threaded) |
| Weight | 142g |
| Mounting | 50×50mm / M6 Threads (4-point) |
| Dimensions | Ø114mm × 42mm (Housing Diameter × Height) |
| Service Life | >2,000 hours (under normal operation) |
• Disc-Type Design: 30% higher torque density vs. conventional motors
• Extended Lifespan: Ceramic hybrid bearings rated for 10,000+ hours
• High-Power Windings: Silver-plated copper with 180°C thermal rating
• Efficient Cooling: Dual-path airflow channels with integrated heat sinks
• Low Vibration: <0.01g·mm dynamic imbalance for precision applications
| Application | Voltage | Propeller | Thrust | Efficiency |
| Heavy-Lift Octo | 44.4V (12S) | 24×8" carbon | 12.5kg | 89% |
| Industrial Hexa | 37.0V (10S) | 22×7" folding | 9.8kg | 87% |
| Cargo Drone | 29.6V (8S) | 20×6.5" | 7.2kg | 85% |
| Agricultural UAV | 44.4V (12S) | 26×9" | 15.3kg | 84% |
• Professional cinema drones (ARRI Alexa-class payloads)
• Industrial cargo delivery drones (>10kg capacity)
• Aerial crane systems for construction
• Power line inspection platforms (>60min flight time)
• Maritime surveillance drones
• Search and rescue heavy-lift systems
• Large-scale crop spraying (10-15L tank capacity)
• Forestry management drones
• Mining survey UAVs
• Continuous Operation: ≤75°C @ 40°C ambient
• Thermal Management: Maintains <90°C at 100% load with 6m/s airflow
• Cooling System: Integrated heat sinks + prop wash cooling
• Storage Conditions: -40°C to +90°C, <80% RH
