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

300KV outrunner brushless DC motor with low price, IP28 waterproof. Max power 400W, input voltage 11-22VDC (by 3-6S batteries). Waterproof BLDC motor for underwater working, such as electric surfboard, propeller, robot model, etc. Matching ESC driver to control speed better.

Specification

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

400W Outrunner Brushless DC Motor Details

Waterproof Brushless DC Motor Dimensions Drawing (Unit: mm)

ESC (Electronic Speed Controller) Selection for Waterproof BLDC Motor

• The speed of 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 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 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.

Tips: Daily maintenance for waterproof brushless DC motor.

1. The use environment of waterproof brushless DC motor should be kept dry. Electric motor surface should be kept clean, and the air inlet should not be obstructed by dust, fibers, etc.
2. When the thermal protection of waterproof BLDC motor continues to operate, it should be ascertained whether the fault comes from the motor or the overload or the setting value of protection device is too low. After the fault is eliminated, it can be put into operation.
3. Ensure that the waterproof brushless DC motor is well lubricated during operation. Generally speaking, when the motor runs for about 5000 hours, grease should be added or replaced. If the bearing is overheated or ubrication is deteriorated during the operation of waterproof BLDC motor, change the grease in time. When replacing the grease, clean up the old lubricating oil, and clean oil grooves of the bearing and the bearing cap with gasoline, and then fill 1/2 of the cavity between the inner and outer rings of the bearing with ZL-3 lithium-based grease (for 2-pole motors) and 2/3 (4, 6, 8 pole motors).