The 35 KG High-Torque Metal Waterproof Servo is a heavy-duty, digital RC servo motor designed for robotics, automation, and research requiring high mechanical strength, durability, and environmental protection. With a stall torque of up to 35 kg·cm at 7.4–8.4 V, all-metal gears, and an IP66/IP67 waterproof rating (varies by manufacturer), it is widely used in outdoor robotics, RC crawlers, and laboratory projects where both torque and ruggedness are required.
This servo is digital, offering higher holding torque, better response, and improved positioning accuracy compared to analog servos. Waterproof housing with seals makes it suitable for wet, dusty, or high-moisture environments.
Technical Specifications (typical 35 kg waterproof digital servo)
Parameter | Specification |
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Torque | ~30 kg·cm @ 6.6 V; ~35–40 kg·cm @ 7.4–8.4 V |
Speed | ~0.13–0.17 s/60° (6.0–8.4 V) |
Operating Voltage | 6.0 V – 8.4 V (supports 2S Li-Po) |
Motor Type | Coreless DC or Brushless DC |
Gear Material | Hardened steel / titanium alloy metal gears |
Bearings | Dual ball bearings for smooth operation |
Waterproof Rating | IP66/IP67 sealed casing with O-ring gaskets |
Control Signal | Standard PWM (500–2500 µs, 50–330 Hz) |
Rotation Range | 180° (standard); some models offer 270° or continuous rotation |
Connector | 3-pin (PWM signal, VCC, GND; JR/Futaba compatible) |
Idle Current | ~150–200 mA |
Stall Current | ~2.5–3.5 A (requires stable high-current power supply) |
Dimensions | ~40 × 20 × 40 mm |
Weight | ~70–85 g |
Features
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Waterproof housing (IP66/IP67) for outdoor and harsh environment use.
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Ultra-high torque (up to 35–40 kg·cm) for robotics and heavy-duty motion control.
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Metal geartrain + dual ball bearings ensure strength and durability.
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Wide voltage range supports HV (7.4–8.4 V) Li-Po batteries.
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Digital control electronics deliver strong holding torque and fast response.
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PWM compatibility with Arduino, ESP32, Raspberry Pi, STM32, Jetson, and RC transmitters.
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Robust aluminum alloy casing in premium versions for heat dissipation.
Operating Considerations
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Requires a dedicated high-current power supply (UBEC or regulator recommended); do not power directly from Arduino/RPi pins.
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Peak current at stall can exceed 3 A, so use suitable drivers or servo controllers.
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Even though waterproof, avoid complete submersion for extended periods unless specified by the manufacturer.
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For multi-servo robotics setups, consider using a servo controller board
Common Use Cases
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Robotics research – robotic arms, quadrupeds, and humanoids requiring high torque and reliability.
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Outdoor RC applications – 1/5 or 1/6 scale cars, crawlers, boats, aircraft.
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Industrial/lab prototypes – automation systems requiring rugged high-torque actuation.
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Pan-tilt gimbal and camera systems – stable positioning of heavy payloads, even outdoors.
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IoT / field robotics – projects deployed in dusty, wet, or outdoor conditions.