TIANKONGRC TD-8120MG Waterproof 20KG Digital Servo Motor (180°)
₹1,439.60 incl. GST (₹1,220.00 + GST)
TIANKONGRC TD-8120MG 20KG Digital Servo Motor is a high-torque, durable servo featuring a coreless motor, full metal gears, IP66 waterproof protection, and 180° control. Delivering up to 20 kg.cm torque at 7.4V, it is ideal for RC cars, robotic arms, humanoid robots, marine applications, and other heavy-duty servo mechanisms.
TIANKONGRC TD-8120MG Waterproof 20KG Digital Servo Motor – Coreless Motor, Full Metal Gear, IP66
Product Description
The TIANKONGRC TD-8120MG is a powerful and high-torque digital servo motor designed for demanding RC, robotics, automation, and mechanical applications. With a maximum torque of 20 kg.cm at 7.4V, this servo provides the strength required for heavy-duty mechanisms, large RC vehicles, robotic joints, steering systems, and other high-load applications.
The servo uses a high-performance coreless motor combined with a full metal gear train, providing fast response, high mechanical strength, and improved durability for repeated operation. Its digital control circuitry allows precise position control and consistent response during operation.
Featuring an IP66 waterproof rating, the TD-8120MG is designed to provide protection against dust and water jets, making it suitable for outdoor, off-road, marine, and other applications where exposure to moisture may occur.
With a control range of up to 180°, the servo can be used for a wide variety of mechanical movement and actuation applications. It is suitable for RC cars, crawlers, boats, robotic arms, humanoid robots, biped robots, outdoor mechanisms, and custom automation projects.
Features
- High-torque digital servo motor
- Maximum torque up to 20 kg.cm at 7.4V
- 17 kg.cm torque at 6.0V
- Coreless motor for fast response
- Full metal gear construction
- IP66 waterproof design
- 180° control angle
- Digital precision control
- Fast operating speed
- Durable construction for heavy-duty applications
- Standard 3-pin servo connector
- Compatible with most PWM servo controllers and receivers
- Suitable for robotics and RC applications
- Ideal for outdoor and marine applications
Specifications
| Parameter | Specification |
|---|---|
| Product Type | Digital Servo Motor |
| Model | TD-8120MG |
| Torque at 6.0V | 17 kg.cm |
| Torque at 7.4V | 20 kg.cm |
| Speed at 6.0V | 0.16 sec/60° |
| Speed at 7.4V | 0.14 sec/60° |
| Operating Voltage | 4.8V – 7.4V |
| Motor Type | Coreless |
| Gear Material | Full Metal |
| Waterproof Rating | IP66 |
| Control Angle | 180° |
| Connector | Standard 3-Pin Servo Connector |
| Dimensions | Approximately 40 × 20 × 40 mm |
| Control Type | Digital PWM |
Design and Construction
The TD-8120MG is built for high-load applications where strength, precision, and durability are important. Its full metal gear train is designed to withstand the mechanical loads associated with steering, robotic joints, linkages, and other demanding mechanisms.
The coreless motor provides fast response and smooth operation, making the servo suitable for applications that require quick and accurate movement.
The servo housing is designed with an IP66 waterproof rating, providing protection against dust and water jets. This makes it suitable for outdoor and moisture-prone applications, although it should not be treated as a fully submersible servo.
Its compact dimensions allow it to be integrated into a wide range of RC and robotic structures without taking up excessive space.
Working Principle
The TD-8120MG is controlled using a standard PWM servo signal. The connected controller sends position commands to the servo, and the internal digital control circuitry processes the signal and drives the motor to the requested position.
The coreless motor produces rotational movement, while the full metal gear train transfers and amplifies the motor’s output to provide high torque at the servo shaft.
The servo can provide up to 20 kg.cm torque at 7.4V, making it suitable for moving heavier mechanical loads. The actual achievable load depends on the mechanical design, power supply, servo position, duty cycle, and operating conditions.
Typical Application Scenarios
Off-Road RC Cars
The high torque and durable metal gears make the servo suitable for steering systems in large RC cars, monster trucks, crawlers, and other heavy-duty vehicles.
Marine Robotics
Its IP66 construction makes it suitable for certain outdoor and marine mechanisms where protection against water splashes and dust is required.
Robotic Arms
The high torque output allows it to be used for robotic joints, grippers, and articulated mechanisms that require strong servo actuation.
Humanoid and Biped Robots
The servo can be used in high-load joints such as legs, arms, hips, knees, and other mechanical sections of custom robots.
Outdoor Automation
The waterproof housing makes it suitable for outdoor mechanisms, sensor positioning systems, tilting platforms, and other motion-control applications.
Applications
- RC cars
- RC trucks
- Rock crawlers
- Monster trucks
- RC boats
- Marine robotics
- Robotic arms
- Humanoid robots
- Biped robots
- Robotic joints
- Robotic grippers
- Servo steering systems
- Industrial-style DIY robots
- Outdoor automation
- Sensor positioning systems
- Camera positioning mechanisms
- Custom mechanical actuators
- Heavy-duty RC applications
- Robotics prototypes
- Embedded motion-control systems
Package Includes
- 1 × TD-8120MG Waterproof 20KG Digital Servo Motor
- 1 × Servo Horns and Screws Set
Product Disclaimer
Product images are shown for illustrative and representational purposes only. The actual servo may vary slightly in colour, dimensions, connector appearance, horn design, screw type, or other visual details depending on the manufacturing batch.
Servo specifications such as torque, speed, waterproof performance, and operating characteristics may vary slightly depending on supply voltage, load, temperature, control signal, and operating conditions.
The IP66 rating indicates protection against dust and water jets under specified test conditions. It does not mean that the servo is designed for continuous underwater operation or complete submersion.
Important Notes
PWM Compatibility
The servo uses a standard 3-pin connector and can be used with compatible PWM servo controllers, receivers, development boards, and microcontroller systems.
Power Supply
Ensure that the power supply can provide sufficient current for the servo, especially when the motor is heavily loaded or operating near its maximum torque.
For maximum torque performance at 7.4V, use an appropriately rated power source and suitable wiring.
Mechanical Load
Do not exceed the servo’s rated torque. Mechanical binding, excessive load, sudden impacts, or continuous operation near maximum torque may cause overheating or premature wear.
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Frequently Asked Questions
1. What is the TD-8120MG servo?
The TD-8120MG is a high-torque digital servo motor designed for RC, robotics, marine, and other heavy-duty applications.
2. What is the maximum torque?
The servo provides up to 20 kg.cm torque at 7.4V and approximately 17 kg.cm at 6.0V.
3. What is the operating voltage?
The specified operating voltage range is 4.8V to 7.4V.
4. Is the servo waterproof?
It has an IP66 waterproof rating, providing protection against dust and water jets. It is not intended for continuous underwater operation.
5. Does it use metal gears?
Yes. The servo uses a full metal gear train for strength and durability.
6. What type of motor does it use?
The TD-8120MG uses a coreless motor designed for fast response and reliable operation.
7. What is the servo speed?
At 6.0V, the speed is approximately 0.16 sec/60°. At 7.4V, it is approximately 0.14 sec/60°.
8. What is the control angle?
The servo provides approximately 180° of control movement.
9. Can it be used with Arduino or ESP32?
Yes. It can be controlled by compatible Arduino, ESP32, and other microcontroller boards using a suitable PWM servo control signal and adequate external power supply.
10. Can it be used for robotic arms?
Yes. Its high torque and metal gears make it suitable for robotic arms, joints, grippers, and other high-load mechanisms.
11. Can it be used in humanoid robots?
Yes. It can be used for selected high-load joints such as legs, knees, arms, shoulders, hips, and other custom robotic mechanisms.
12. Can it be used in RC cars?
Yes. It is suitable for steering and other high-load mechanisms in large RC cars, trucks, crawlers, and monster trucks.
13. Can it be used for marine robotics?
Yes. Its IP66 protection makes it suitable for certain marine and outdoor applications where protection from splashes and dust is required.
14. What is included in the package?
The package includes 1 × TD-8120MG digital servo motor and 1 × servo horns and screws set.
15. Does it require a separate power supply?
A suitable external power source is recommended because high-torque servos can draw significant current, particularly under heavy load.
16. Can it operate continuously at maximum torque?
Continuous operation near maximum rated torque is not recommended unless the mechanical system, power supply, cooling, and duty cycle are designed accordingly. Excessive load can increase heat and reduce servo life.Only logged in customers who have purchased this product may leave a review.
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