U40 3500W 40KG Thrust 12-50V Underwater Subsea Thruster Propeller Waterproof Brushless Motor For RC Bait Tug Boat Nest Ship Submarine

APISQUEEN U40 3500W Underwater Thruster

The APISQUEEN U40 is a high-power, brushless underwater thruster featuring a propeller-driven design, engineered to provide robust propulsion for a wide range of surface and underwater equipment. With a maximum thrust of 40 kg, it is ideally suited for applications that demand high-performance propulsion.

This thruster can be integrated into various platforms—including RC bait boats, tugboats, submersibles, and other marine equipment—to meet the power requirements of diverse surface and underwater operational environments.

Product Features

1. 40kg High Thrust Output

Delivers a maximum thrust of 40kg, providing power for large RC boats, underwater equipment, and other gear requiring high propulsion force.

2. 12–50.2V Wide Voltage Range

Supports 3–12S LiPo battery inputs, allowing for flexible operating voltage selection based on your equipment’s power configuration.

3. CW / CCW Rotation Options

Available in both clockwise (CW) and counter-clockwise (CCW) rotation versions, facilitating easy setup for single- or dual-thruster systems.

4. Forward and Reverse Control

When paired with a bidirectional ESC, it enables forward rotation, reverse rotation, stopping, and speed adjustment, allowing for precise control of the equipment’s movement.

5. Freshwater and Saltwater Applications

Suitable for both freshwater and saltwater environments, making it ideal for a wide range of surface and underwater equipment.

Product Dimensions

Thrust Test Data

 U40 Technical Specifications

Product Model: U40
Input Voltage: 12–50.2V
Battery Compatibility: 3–12S LiPo
Maximum Current: 70A
Maximum Thrust: 40kg
Maximum Power: 3500W
Waterproof Depth: 200m
Thruster Weight: 6300g
Thruster Dimensions: 328 × 178 mm
Propeller Diameter: Ø161 mm
ESC Dimensions: 170*102*48mm
ESC Weight: 1330g
Thruster Cable Length: 1m

Connection Method

Comparison of A300 and W300 Remote Controls

A300 Remote Control: Offers a control range of up to 200 meters and includes a cruise control function. This remote is not waterproof and is intended for use only in dry environments.

W300 Waterproof Remote Control: Provides an extended control range of approximately 250–500 meters. It features a waterproof design and can be submerged in water up to 1 meter deep. This remote includes a cruise control function, and the accompanying receiver supports automatic heading correction to help maintain a straight course. The receiver must be positioned horizontally to ensure proper operation.

Which one should you choose? If you only require standard remote control operation over shorter distances, choose the A300. If you need a waterproof design and a longer control range for operating your vessel, choose the W300.

ABOUT PWM 

PWM full name is (Pulse-width modulation). It is also called duty cycle signal, which indicates the proportion of the high level duration to the whole signal period. 2ms for the whole period of PWM, 1.5ms stop, 1.5-2ms forward, 1.5-1ms reverse.

From the diagram, we can clearly see that when PWM is 75% (1.5ms), the motor stops rotating, when PWM is 50% (1ms), the motor rotates in reverse, and when PWM is 100% (2ms) the motor rotates in forward.Of course ESC will not only make the motor turn forward and reverse, but can adjust the speed of motor rotation by the duty cycle size of PWM. When the PWM is gradually changed from 75% to 50%, the motor will keep reversing and accelerating from stop until the reverse rotation reaches the maximum. And when PWM is gradually changed from 75% to 100%, the motor is continuously accelerated from stop to forward until the forward rotation reaches the maximum value. That is, PWM is a signal that can be continuously varied, and the effective range is from 50% to 100%.

The frequency of PWM signal is 50hz, 100hz, 200hz or 500hz, etc. The higher the control frequency, the shorter the period, the shorter the control interval, and the faster the ESC and motor response speed The faster the ESC and motor response. Conversely, the lower the control frequency, the longer the period, the longer the control interval, and the slower the ESC and motor response.

FAQ

Q1: What is the difference between the CW version and the CCW version?

DESCRIPTION OF THE UNDERWATER THRUSTERS CW AND CCW