The SunnySky XS High Power X4112S 400KV Brushless Motor is a high-performance propulsion engine specifically designed for industrial sUAS, heavy-lift multi-rotor platforms, and tactical military applications. Part of the innovative XS series, this motor features a patented semi-enclosed structural design that provides an exceptional defense against sand, dust, and environmental debris. This specialized architecture ensures high-efficiency ventilation and superior heat dissipation, allowing for reliable operation during extended flight missions in demanding or remote environments.
Engineered with premium Japanese EZO ball bearings, the X4112S 400KV delivers ultra-smooth rotation with minimal radial runout, ensuring high stability and reduced vibration—critical for long-range surveillance and high-precision data collection. The internal components feature meticulous hand-wound copper coils that achieve up to a 90% space factor. This reduces internal resistance and maximizes power output, making it a preferred choice for sUAS manufacturers, defense contractors, and advanced educational engineering programs. Its high torque-to-weight ratio and efficiency make it an ideal power plant for 6S LiPo configurations requiring agile yet stable flight performance.
Technical Specifications
Stator Diameter: 41mm
Stator Thickness: 12mm
KV Rating: 400KV
Configuration: 12N14P
No-Load Current: 0.6A @ 10V
Motor Resistance: 60mΩ
Max Continuous Current: 49A (30s)
Max Continuous Power: 1225W
Rotor Diameter: 47.5mm
Body Length: 33.5mm
Shaft Diameter: 4mm
Weight (including wire): 169g
Battery Support: 6S LiPo
Recommended ESC: 50A to 60A
Recommended Propellers: 14x4.7, 15x5, 15x5.5 inch
Max Takeoff Weight: ≤1700g per axis
What is Included
1x SunnySky X4112S 400KV Brushless Motor
1x Precision Propeller Adapter and Hardware Set
1x Heavy-Duty Mounting Plate and Screw Pack
Pre-installed High-Temperature Silicone Motor Leads
| Name | Value |
|---|---|
| MANUFACTURER | SunnySky |
| STATOR DIAMETER | 41 |
| STATOR HEIGHT | 12 |
| KV | 400 |
| THREAD DIRECTION | None |
| SHAFT FOR COLLET MOUNT | no |
| GTIN | 680306447282 |
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