3000W 160KV Sensorless Waterproof BLDC Motor, IP68

Waterproof brushless DC motor for sale, with optional matching ESC driver. Rated power: 3kW, battery supply: 8–12S. This IP68 inrunner BLDC motor is compact and designed for underwater use, widely applied in electric surfboards, propellers, robotic models, boosters, hydro systems, and other submersible equipment.

Specification

Note: The motor is powered by 14S 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 choose the right propeller for a waterproof BLDC motor?

A: When choosing a propeller or thruster for a waterproof BLDC motor, it’s important to match the propeller size and pitch with the motor’s KV rating, power, and voltage range. A larger diameter or higher pitch propeller provides more thrust but increases load on the BLDC motor, while a smaller or lower pitch propeller reduces load and improves efficiency. Always balance your performance needs—such as speed for surfboards or control for underwater robots—with the motor’s specifications to ensure safe and efficient operation.