T100 Thruster

From: $119.00

The T100 is world’s first affordable underwater thruster designed for marine robotics and the future of ocean exploration.

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HS Code: 8501.31.4000

Product Description

The T100 Thruster is a patent-pending underwater thruster designed specifically for marine robotics. It’s high performing with over 5 pounds of thrust and durable enough for use in the open ocean at great depths. A variety of mounting options, simple control, and a low price tag make it the perfect thruster to use on your marine robot.


The T100 was designed for various consumers and limitless applications. Students and Schools can use the T100 for educational projects or to compete in competitions such as the AUVSI RoboSub and RoboBoat competitions and the MATE ROV competition. It’s capable and affordable hardware make it perfect for Makers and Hobbyists, as well as Professional Users who want a high-quality thruster that performs better than many of the high-end (expensive) alternatives.


The T100 is basically a brushless electric motor, just like you’d find on an RC airplane or a quadcopter drone. The big difference is that this motor is purpose-built for use in the ocean and was designed specifically for use on ROVs, AUVs, and robotic surface vehicles. Of course you could also use it to propel your stand-up-paddleboard or cruise around while kayaking! It’s compact design fits in any project.

The T100 is made of high-strength, UV resistant polycarbonate injection molded plastic. The core of the motor is sealed and protected with an epoxy coating and it uses high-performance plastic bearings in place of steel bearings that rust in saltwater. Everything that isn’t plastic is either aluminum or high-quality stainless steel that doesn’t corrode.

A specially designed propeller and nozzle provides efficient, powerful thrust while active water-cooling helps cool the motor. Unlike other thrusters, our design doesn’t have any air- or oil-filled cavities – water flows freely through all parts of the motor while it’s running and can handle extreme pressures.

The thruster is easy to use: just connect the three motor wires to any brushless electronic speed controller (ESC) and you can control it with an RC radio or a microcontroller. It’s usable with Arduino, ArduPilot, Raspberry Pi, BeagleBone, and many other embedded platforms.

The T100 comes with clockwise and counter-clockwise propellers to counter torque.


  • 1 x T100 Thruster
  • 1 x Clockwise and counterclockwise propeller


Maximum Forward Thrust2.36 kg f5.2 lb f
Maximum Reverse Thrust1.85 kg f4.1 lb f
Minimum Thrust0.01 kg f0.02 lb f
Rotational Speed300-4200 rev/min
Operating Voltage6-16 volts
Max Current12.5 amps
Max Power135 watts
Phase Resistance0.24 +/- 0.01 Ohms
Phase Inductance (@ 1 kHz)0.120 +/- 0.008 mH
Length102 mm4.0 in
Diameter100 mm3.9 in
Weight in Air (with 1m cable)0.65 lb295 g
Weight in Water (with 1m cable)0.26 lb120 g
Propeller Diameter76 mm3.0 in
Mounting Hole ThreadsM3 x 0.5
Mounting Hole Spacing19 mm0.75 in
Cable Length1.0 m39 in
Cable Diameter6.3 mm0.25 in

Performance Charts

2D Drawings

T200 2D Drawing

3D Models


Revision History

10 August 2014

  • R1 – Initial Release

Quick Start

1. Connect motor wires to ESC and connect the ESC to power and a signal.

2. Send a signal and the thruster will start spinning. That’s it.

T200 Quickstart

Important Notes

Always practice caution when you’re working with electricity in water and with the spinning blades of the propeller. Keep body parts away from the thruster inlet and outlet to avoid injury.

Do not operate the thruster for extended periods (more than a few seconds) out of water. The bearings are lubricated by the water and vibration and noise will be greater when dry.

Do not operate the thruster for extended periods (more than a minute) at full throttle in water. If not allowed to cool periodically, damage can occur. We recommend our T200 thruster for long period high throttle use cases.

The thruster can handle saltwater and sandy environments pretty well, but it does not get along with seaweed. Avoid sucking seaweed into the thruster to avoid damage.


T100 User Manual

Thruster Disassembly

T100 Troubleshooting Steps


BlueRobotics Forums – Thrusters and Motors