Engine SunnySky X5320 KV250

Order the powerful SunnySky X5320 KV250 engine for your professional drone!

Get unrivaled power and reliability for the most serious aircraft. The SunnySky X5320 KV250 engine is the flagship model in the line of aircraft model engines. This motor is for professional heavy drones, large airplanes and helicopters. The low KV value of 250 and the powerful 53x20 mm stator provide colossal torque. This is necessary for the efficient rotation of huge propellers.

The motor is designed to work with high voltage 12S batteries. This allows you to achieve maximum power with minimal currents and losses in the wires. Choose the best for your projects. Order SunnySky X5320 KV250 right now in our store.

• Huge torque for lifting heavy loads and using large diameter propellers.

• High quality workmanship: CNC machined housing, powerful neodymium magnets and precision rotor balancing.

• Works with high voltage 12S batteries for maximum efficiency and reduced current loads.

• Reinforced design with 8 mm shaft and reliable bearings for long-term operation under load.

• Versatility of application: from professional aerial photography platforms to large aerobatic models.

Operating principle and design

The SunnySky X5320 KV250 engine is a type of brushless motor with an external rotor (Outrunner). The rotating outer housing with powerful neodymium magnets creates exceptionally high torque. The brushless design guarantees high efficiency, no sparking and minimal wear, limited only by the life of the precision bearings.

The manufacturer SunnySky uses only the best materials in this motor. The precision CNC machined aluminum body is not only durable, but also effectively dissipates heat thanks to its smart design, preventing overheating even during prolonged use under maximum load. The stator windings are made of copper wire with high quality insulation, ensuring excellent conductivity and reliability. The rotor is carefully balanced, which guarantees smooth operation and the absence of vibrations, critical for high-quality aerial photography and flight stability.

Technical characteristics and selection of propeller

Thanks to the low KV of 250, the SunnySky X5320 motor works optimally with high voltage 12S (44.4V) batteries. High voltage allows the necessary power to be transmitted at lower currents, which reduces the requirements for wire cross-section and reduces the heating of the controllers. This is a key advantage for professional and cargo drones, where every minute of flight and system reliability matters.

The stator size of 53x20 mm is designed for long-term operation with powerful large-diameter propellers. The SunnySky X5320 KV250 motor is capable of efficiently turning propellers from 17 to 20 inches or more, providing enough thrust to lift professional survey equipment, spray systems or other payloads.

The 8 mm diameter shaft guarantees rigidity and reliable power transmission even under the most extreme loads. The exact current and thrust parameters depend on the selected propeller and battery voltage, so it is recommended to use calculators or manufacturer tables when selecting.

Specifications

• Stator diameter - 53 mm
• Rotor diameter - 62.8 mm
• Stator thickness - 20 mm
• Shaft diameter - 8 mm
• Number of stator slots - 12
• Number of rotor poles - 14
• KV — 250
• Case length without shaft - 50 mm
• Total body length - 100 mm
• Maximum number of LiPo cans – 8S
• Idle current - 1.7 A / 10 V
• Recommended ESC - 80 A
• Motor resistance - 32 mOhm
• Recommended propellers: 18×12, 19×12, 20×10
• Maximum constant current - 68 A (30 s)
• Maximum continuous power - 2033 W
• Weight - 770 g.