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Built for Makers Robotics • Electronics • DIY

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MG90S Metal Gear Micro Servo 180 Degree High Torque Motor for Arduino and RC

Component	Specification
Model	MG90S (Upgraded SG90)
Operating Voltage	4.8V to 6.0V DC
Stall Torque	1.8 kg-cm (4.8V) to 2.2 kg-cm (6V)
Gear Type	Full Metal Gears (with one plastic gear for noise reduction)
Rotation Angle	180 Degrees
Operating Speed	0.10s / 60° (4.8V) to 0.08s / 60° (6V)
Weight	Approx. 13.4g

Price

🚚 Ships within 24 Hours
📦 Pan India Delivery

₹ 152.54

(Tax included)

बारकोड: 6466799

Product Description: The MG90S is the high-performance, metal-geared upgrade to the classic SG90 micro servo. Designed for applications that require more "muscle" and durability, it features a robust internal gear train that can withstand higher mechanical shocks and heavier loads without stripping. It maintains the same compact footprint as its plastic predecessor, making it a drop-in replacement for RC helicopters, small robotic arms, and steering mechanisms in 1:16 scale RC cars where precision and reliability are paramount.

Key Features

Metal Gear Durability: Significantly higher resistance to gear stripping under load compared to nylon versions.
Coreless Motor: Provides faster response times and smoother starting torque.
Double Ball Bearing: Ensures low friction and high stability for the output shaft.
Universal Compatibility: Standard 3-wire interface works with Arduino, ESP32, Raspberry Pi, and all RC receivers.
Precision Control: High resolution with a narrow dead-band for accurate positioning.

Technical Details

Dead Band Width: 5μs
Temperature Range: 0°C to +55°C
Connector Wire Length: 250 mm
Control System: Analogue Pulse Width Modulation (PWM)
Dimensions: 22.8 x 12.2 x 28.5 mm
Wiring: Brown (GND), Red (VCC), Orange (Signal)

Prototyping and Engineering Tips from Robogears

Higher Stall Current: Because the MG90S has metal gears and a stronger motor, its stall current is higher than the SG90. If your servo "vibrates" or "hunts" for its position, it usually means your power supply isn't providing enough current. Use an external 6V 2A BEC or battery pack.
Linkage Geometry: Ensure your mechanical linkages do not hit a physical stop before the servo reaches its commanded angle. Stalling a metal gear servo generates heat quickly and can damage the internal control board.
End-Point Calibration: Use a servo tester to find the exact 0° and 180° points. Many MG90S units have a slightly wider or narrower pulse range (e.g., 500us to 2500us) than the standard 1000us-2000us.
Mounting: Use the included mounting screws and brass eyelets if your project involves high vibration (like an RC plane engine) to protect the plastic tabs from fatigue.

Package Includes

1 x MG90S Metal Gear Micro Servo
3 x Reinforced Servo Horns (Arms)
1 x Set of Mounting Screws

Disclaimer: Images are for reference; actual appearance or branding may vary by batch. Specifications subject to change by the manufacturer. Avoid forcing the shaft manually to prevent damaging the high-precision internal gears.