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TD20E 12-50V Underwater Thruster with ESC – 20kg CNC Brushless Motor for Kayaks & Boats

$459.00 USD

We are the OEM ODM manufacturer. For bulk orders and custom solutions, please contact us at official@hobbywater.com

We prioritize fast order processing. For in-stock items, orders placed before 4:00 PM (Beijing Time) will be shipped the same day. Standard orders typically ship within one week, while customized orders require approximately 15-30 business days for production and delivery. Delivery times may vary under special circumstances.

We ship to most countries worldwide. However, please ensure compliance with your local import regulations.

For the USA: We offer tax-inclusive shipping options. Expedited orders are shipped via DHL, UPS, or FedEx. Note: DHL does not allow undervaluation.
For other countries: Tax-inclusive shipping is available upon request. Otherwise, orders will be shipped via 4PX by default.

For specific shipping requirements, please contact us in advance.

TD20E Underwater Thruster – 20kg Thrust, Waterproof Brushless Motor

The TD20E underwater thruster is a compact, powerful, and waterproof propulsion system designed for kayaks, inflatable boats, bait boats, unmanned vessels, and rescue craft. Built with CNC-machined 6061 aluminum alloy and a fully resin-potted brushless motor, it ensures durability, corrosion resistance, and long-lasting underwater performance.

With a built-in bidirectional waterproof ESC (Electronic Speed Controller), installation is plug-and-play—no external controller needed. The wide voltage range (12V–50V) and 20kg max thrust make it ideal for electric kayak conversions, fishing boats, and remote-controlled watercraft.

Key Specifications:

✅ Voltage Range: 12V–50V (Supports Li-ion, LiFePO4, and lead-acid batteries)
✅ Max Current: 25A
✅ Max Thrust: 20kg (44 lbs) – Strong propulsion for small to medium vessels
✅ Power Output: 1200W – High-efficiency brushless motor
✅ Cable Length: 1000mm (1m) – Flexible wiring for easy integration
✅ Motor Diameter: 50mm – Compact yet powerful
✅ Propeller: 4-blade CNC metal propeller (110mm diameter) – Optimized for smooth, high-thrust performance
✅ Total Length: 220mm – Space-saving design
✅ Weight: 2300g (2.3kg) – Lightweight yet robust
✅ Package Weight: 2500g (2.5kg)

Top Features:

🔹 Built-in Waterproof ESC – No extra controller required, bidirectional control (forward/reverse)
🔹 CNC-Machined Aluminum Housing – Corrosion-resistant, durable 6061 alloy
🔹 Fully Resin-Sealed Brushless Motor – 100% waterproof (IP68 rated) for submersion
🔹 High-Efficiency Propulsion – 20kg thrust for kayaks, fishing boats, RC boats, and rescue drones
🔹 Wide Voltage Compatibility – Works with 12V, 24V, 48V, and 50V systems
🔹 Easy Mounting – Compact design fits most small watercraft

Ideal Applications:

🎣 Fishing Kayak Motor Upgrade – Silent, powerful electric propulsion
🚤 Inflatable Boat & Dinghy Thrusters – No gas, no noise, just smooth power
🛶 Bait Boat & Fish Finder Propulsion – Precise speed control for anglers
⚡ Unmanned Surface Vessels (USV) & Rescue Drones – Reliable underwater thrust
🛥️ Small Electric Boat Conversions – Eco-friendly alternative to gas engines

Why Choose the TD20E?

✔ No External ESC Needed – Built-in controller simplifies installation
✔ Heavy-Duty Construction – CNC aluminum & resin-sealed motor for saltwater/freshwater use
✔ High Thrust-to-Weight Ratio – 20kg thrust in a compact 2.3kg unit
✔ Versatile Voltage Support – Compatible with 12V to 48V battery systems

Upgrade Your Watercraft Today!
Whether you're building an electric kayak, a remote-controlled boat, or a rescue drone, the TD20E underwater thruster delivers power, reliability, and waterproof performance.

Order Now & Experience High-Efficiency Underwater Propulsion!

1. For Your Safety:

Keep Clear: Never put hands, feet, or anything near the propeller when it's plugged in. It can spin without warning and cause injury.
No Water, No Power: Do not run the thruster in air for more than 10 seconds. It needs water to cool itself or it will break.

2. For The Thruster's Safety:

Check Seals: Always check that the rubber O-rings are clean, greased, and undamaged before putting it in water.
Avoid Debris: Keep it away from weeds, sand, and plastic bags. These can jam and break the propeller.
No Regular Glue: Do not use normal threadlocker (screw glue) on any screws. It will crack the plastic body. Only use a kind that is safe for polycarbonate.

3. Simple Rules:

Test First: Always test in a bucket or pool before going to open water.
Rinse After Use: Always rinse with fresh water after use, especially in saltwater.
Store Safely: Keep it in a case to protect it from bumps and dust.

1. Two Propeller Types:

You get two propellers: one labeled "CW" (spins clockwise) and one labeled "CCW" (spins counterclockwise).

2. How Thrust Works:

Forward Thrust (Recommended):A CW propeller pushes best when spinning clockwise.A CCW propeller pushes best when spinning counterclockwise.✅ Use this for maximum power and efficiency.
Reverse Thrust:Both can also spin the opposite way to push backwards.⚠️ This works but is weaker and less efficient.

Quick Tip: Always check the label (CW/CCW) to make sure you have the right propeller installed for the direction you want to go. For the strongest push, use forward thrust.

The Thruster: The main unit, which contains a brushless DC motor.

Power Source: A battery pack or power supply.
A Controller: Something to tell it how fast and which way to spin (e.g., a remote control).

How to Connect It:

If your thruster has a built-in ESC:
You can often connect it directly to a standard PWM receiver.
Important Note on Power:
If your receiver or ESC does not have a BEC (Built-in Eliminator Circuit) to power itself, you will need to add a separate BEC module. This provides the necessary power for the electronics.

It's normal for our thrusters to be loud.They use plastic bushings, so small movements between parts can cause sound. This noise is greatly reduced underwater, as water lubricates and cools the system.Never run them dry for more than a few seconds—it can permanently damage the bearings. Every thruster is tested to work properly.