400W 300KV Sensorless Waterproof BLDC Motor, IP28

300KV outrunner brushless DC motor with IP28 waterproof rating. Max power 400W, input 11-22V DC (3-6S batteries). This waterproof BLDC motor with ESC is ideal for direct-drive propellers, efoil electric surfboards, skateboards, and longboards.

Specification

Note: The motor is powered by 3-6S batteries, S is the number of batteries, voltage of every battery is 3.7V DC.

ESC (Electronic Speed Controller) Selection for Waterproof BLDC Motor

• A BLDC motor can be used with an ESC as long as its speed does not exceed the ESC’s limit.
• BLDC motor speed = Battery Voltage × KV value;
  Stator speed = Battery Voltage × KV value × Pole Pairs.
• The maximum speed limit of the V4 series ESC is 60,000 ERPM.
  The maximum speed limit of the V6 series ESC is 150,000 ERPM.
• If a BLDC motor’s maximum speed surpasses the ESC’s limit, it is possible to match them by lowering the motor’s operating voltage. However, this is not recommended, as it prevents the motor from functioning as a true brushless DC motor.

ESC (Electronic Speed Controller) Specification

Note: The ESC model with * is the recommended controller for this page of motor, if you need other ESC models, please contact us.

Details

Dimension (Unit: mm)

Applications

Jet Ski

Propeller

Robot Model

Electric Surfboard

Q: How to maintain for a waterproof brushless DC motor?

A: To maintain a waterproof brushless DC motor, regularly clean its exterior to remove dust or debris, check that all electrical connections and waterproof seals are intact, avoid overloading the BLDC motor, and monitor its operating temperature to ensure long-term reliable performance.