Engine SUNNYSKY X4125 KV465

Get reliable, efficient powertrain for your toughest projects. The SUNNYSKY X4125 KV465 motor is a high quality external rotor brushless motor designed to provide maximum thrust when driving large propellers. The four-digit code 4125 indicates a stator diameter of 41 mm and a height of 25 mm, which indicates the ability of the motor to produce enormous torque.

The low KV rating of 465 means the motor is designed to operate with high voltage 10-12S batteries and is ideal for professional aerial photography platforms, agricultural drones and large aerobatic models. Choose the best for your projects. Order SUNNYSKY X4125 KV465 right now in our store.

• Huge torque for confident lifting of heavy loads and large propellers.

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

• High efficiency thanks to optimized design that reduces energy loss and heat.

• Versatility of application: from heavy octocopters for aerial photography to large aerobatic aircraft.

• Reliable operation at high voltages 10-12S, which reduces currents and losses in wires.

Operating principle and workmanship

The SUNNYSKY X4125 KV465 motor is a type of brushless motor with an external rotor. The rotating outer housing with powerful neodymium magnets provides exceptionally high torque. It is needed for efficient rotation of heavy, large-diameter propellers. 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 efficiently dissipates heat thanks to its clever design. It prevents overheating even during prolonged operation 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. This ensures a smooth ride and no vibration, which is critical for quality aerial photography.

Technical characteristics and selection of propeller

With a low KV of 465, the SUNNYSKY X4125 motor works optimally with 10S, 11S and 12S high voltage batteries. High voltage allows the necessary power to be transmitted at lower currents. This reduces wire size requirements and reduces heat buildup on 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 41x25 mm is designed for long-term operation with powerful large-diameter propellers. The motor is capable of efficiently turning 17 to 20 inch propellers, providing enough thrust to lift professional survey equipment, spray systems or other payloads.

The exact current and thrust parameters depend on the selected propeller and battery voltage. Therefore, when selecting, it is recommended to use calculators or tables from the manufacturer. Sunnysky's high build quality guarantees long service life and stable performance under a wide variety of operating conditions.

Specifications

• Stator diameter - 41 mm
• Rotor diameter - 49.7 mm
• Stator thickness - 25 mm
• Case length - 54 mm
• Number of stator slots - 12
• Number of rotor poles - 14
• KV — 465
• Shaft diameter - 6 mm
• Maximum number of LiPo cans: 6S
• No-load current - about 2 A / 10 V
• Motor resistance - about 17 mOhm
• Recommended ESC - 80-120 A
• Maximum constant current - 100–115 A (30 s)
• Maximum continuous power - 2500–2650 W
• Weight - 362 g.