400W 300KV 3-6S Waterproof Brushless DC Motor, IP28, Sensorless

300KV outrunner brushless DC motor with IP28 waterproof. Max power 400W, input voltage 11-22VDC (by 3-6S batteries). Waterproof BLDC motor combine with ESC controller suitable for direct-drive propeller/ efoil electric surfboard, skateboard, and longboard applications.

Specification

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

Dimensions (mm)

ESC (Electronic Speed Controller) Selection for Waterproof BLDC Motor

• The speed of the BLDC motor does not exceed the speed of ESC, it can be matched and used.
• Brushless DC motor speed calculation formula: battery voltage * motor KV value.
  Brushless DC motor stator speed calculation formula: motor KV value * battery voltage * motor pole pairs.
• The limit speed of V4 series ESC is 60000 ERPM.
  The limit speed of V6 series ESC is 15000 OERPM.
• If the maximum speed of BLDC motor exceeds the speed of the electric speed controller, the ESC can also be matched by reducing the working voltage of motor. But we do not recommend this, because it does not really play the role of a 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

Tips: How to make 400W waterproof BLDC motor waterproof?

• Unique case: Covering the motor with a unique case is one of the common ways to avoid water hazards, and professional cases can be too expensive.

• Moisture-proof water pump seal: To maintain the fitness moving components of the motor, especially the shaft and rolling bearings, the moisture-proof water pump seal creates an enclosed area for the inner workings of the motor.