DS3240MG 40KG High-Torque 180° Digital Metal Gear Servo Motor (Waterproof with Metal Servo Horn)

Dominate high-stress robotics and heavy-duty RC applications with the DS3240MG 40KG 180-Degree Digital Servo Motor. Engineered to supply a massive torque output of up to 40 kg.cm at 6.8V, this ultra-high-torque servo features stainless steel and aluminum precision gears, dual ball bearings, and a full CNC aluminum middle shell for rapid heat dissipation. Providing a precise 180° rotation angle, high-speed digital response, and IP66 water resistance, it is built for 1/5 and 1/8 scale RC crawlers, heavy robotic arms, and industrial automation projects driven by Arduino or ESP32.

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₹ 1,406 ^{₹ 1,699}

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Tags DS3240MG 40kg Servo 180 Degree Servo Motor DS3240MG Digital Servo Metal Gear Servo 40kg High Torque Arduino Servo Waterproof 40kg Servo Robotic Arm Servo 1/5 RC Crawler Servo

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Product Details :

The DS3240MG 40KG 180° Digital Servo Motor is an extreme-duty mechanical actuator designed for heavy-load applications requiring massive holding force and high positional precision. Delivering twice the torque of standard 20kg servos, the DS3240MG incorporates reinforced stainless steel and aluminum internal gears riding on dual ball bearings to eliminate gear shearing, tooth wear, and slop under extreme stall pressures.

Housed in a rugged enclosure with a central CNC-machined aluminum heatsink, it ensures rapid thermal dissipation during prolonged heavy lifting or continuous holding states. Its IP66 water-resistant sealing shields internal control circuitry, feedback potentiometers, and core motor windings against rain, splashing water, and fine dust, making it the premier choice for large-scale RC rock crawlers, heavy robotic manipulators, automated steering linkages, and industrial mechanical gates.

Key Features and Benefits

Massive 40KG Torque Output: Delivers up to $40 ext{ kg}cdot ext{cm}$ of stall torque at $6.8 ext{V}$ , easily handling high-load mechanical linkages and heavy robotic structures.
180° Precise Angular Motion: Provides a smooth, precise $0^circ ext{ to } 180^circ$ rotation range governed by standard PWM pulses ( $500 mu ext{s} - 2500 mu ext{s}$ ).
Reinforced Steel & Metal Gear Train: Extreme-durability stainless steel and metal gear teeth absorb intense shock loads without stripping.
Full CNC Aluminum Middle Case: Accelerates passive cooling under high-load continuous operating conditions to maintain consistent torque performance.
IP66 Water & Dust Resistance: Silicone gasket seals protect internal electronics against environmental moisture, humidity, and splash exposure.
Advanced Digital Drive Circuit: High-frequency digital processing offers tight dead-band width ( $le 3 mu ext{s}$ ), instant startup torque, and rapid response times.

Technical Specifications

Feature Component	Specification Details
Model Designation	DS3240MG (180° Version)
Control System	Pulse Width Modulation (PWM) Digital Control
Operating Angle	$180^circ pm 3^circ$ (Pulse range: $500 - 2500 mu ext{s}$ )
Operating Voltage Range	$4.8 ext{V} - 6.8 ext{V DC}$
Stall Torque ( $5.0 ext{V}$ )	$36.0 ext{ kg}cdot ext{cm}$ ( $499.9 ext{ oz/in}$ )
Stall Torque ( $6.8 ext{V}$ )	$40.0 ext{ kg}cdot ext{cm}$ ( $555.5 ext{ oz/in}$ )
Operating Speed ( $5.0 ext{V}$ )	$0.20 ext{ sec}/60^circ$
Operating Speed ( $6.8 ext{V}$ )	$0.17 ext{ sec}/60^circ$
Gear Material	Stainless Steel & Aluminum Alloy
Dead-Band Width	$3 mu ext{s}$
Motor Type / Bearing	Core DC Motor / Dual Ball Bearings
Water Resistance Rating	IP66 (Splash-proof)

Pinout & Wiring Guide

The servo features a standard 3-pin 0.1" ( $2.54 ext{mm}$ ) female JR-style connector for direct attachment to microcontroller expansion shields and RC receivers:

3-Pin Wire Color Code:

Brown / Black Wire (GND): Power Supply Ground ( $0 ext{V}$ ). Must share a common ground with the controller.
Red Wire ( $V_{CC}$ ): Power Supply Positive ( $+4.8 ext{V}$ to $+6.8 ext{V DC}$ ).
Orange / Yellow Wire (Signal): PWM Input Signal line (Connect to Arduino digital PWM pin).

Power Supply Note: Do NOT power this 40kg servo directly from the 5V rail of an Arduino board. Under heavy stall conditions, a 40kg motor can draw peak current bursts between 3.5A and 4.5A, which will brown out or damage your microcontroller board. Always use a dedicated external regulated power supply ( $5 ext{V}-6.8 ext{V}$ , rated at $5 ext{A}+$ ) and connect its ground pin to the microcontroller ground.

Arduino Quick-Start Code Example

To achieve the full $180^circ$ motion range with maximum pulse sensitivity, attach the pin using pulse boundaries ( $500 mu ext{s}$ to $2500 mu ext{s}$ ):

C++
#include <Servo.h>

Servo myServo;  // Create servo object

const int SERVO_PIN = 9; // Connect to Signal (Orange) wire

void setup() {
  Serial.begin(9600);
  // Attach servo to pin 9 with pulse range: 500us (0 deg) to 2500us (180 deg)
  myServo.attach(SERVO_PIN, 500, 2500); 
  Serial.println("DS3240MG 180-Degree 40KG Servo Initialized.");
}

void loop() {
  // Move to 0 Degrees
  myServo.write(0);
  delay(2000);

  // Move to Center Position (90 Degrees)
  myServo.write(90);
  delay(2000);

  // Move to Max Position (180 Degrees)
  myServo.write(180);
  delay(2000);
}

Applications

Heavy Robotics & Manipulators: Shoulder, elbow, and base joints for multi-DOF heavy-duty robotic arms and bipedal exoskeletons.
Large-Scale RC Vehicles: Steering control for heavy 1/5 and 1/8 scale RC crawlers, monster trucks, and large scale RC boats.
Automation & Mechanisms: Heavy door latches, automated agricultural gates, and solar panel sun-tracking tilting mounts.
Camera Cranes & Jibs: High-holding torque motion platforms for industrial video pan-tilt rigs.