MG90S Metal Gear Servo Motor

MG90S Metal Gear Servo Motor (90-180 Degree) is a compact, high-performance micro servo motor engineered to deliver precise angular positioning and reliable mechanical torque for hobbyist and industrial applications. This motor integrates durable metal gears within a lightweight polymer housing, which ensures exceptional longevity and resistance to wear compared to standard nylon-geared alternatives. Consequently, it provides a dependable actuation solution for miniature robotics, RC models, and automated mechanisms. Furthermore, the wide operational angle and rapid response time enable smooth trajectory tracking in dynamic environments. Therefore, engineers and makers frequently select this servo when precision and durability are critical design parameters.

Key Features:

• Metal Gear Train: Incorporates robust metal gears that significantly increase durability, torque transmission, and overall service life under heavy load conditions.
• Wide Rotational Range: Supports flexible angular control ranging from 90 to 180 degrees, accommodating diverse mechanical linkage setups.
• Compact Form Factor: Features a lightweight micro size that allows seamless integration into space-constrained projects such as RC airplanes and camera gimbals.
• High Response Speed: Delivers rapid transit times to ensure instantaneous feedback and precise positioning during high-speed operations.
• Universal Compatibility: Operates efficiently with standard PWM control signals generated by Arduino, Raspberry Pi, and various microcontroller development boards.

Technical Specifications:

• Operating Voltage: 4.8V to 6.0V DC
• Stall Torque: 1.8 kg/cm (at 4.8V) and 2.2 kg/cm (at 6.0V)
• Operating Speed: 0.11 s/60° (at 4.8V) to 0.09 s/60° (at 6.0V)
• Dead Band Width: 5 microseconds
• Control System: Pulse Width Modulation (PWM)
• Operating Angle: 90 to 180 Degrees

Mechanical Specifications:

• Gear Material: Metal gear assembly
• Case Material: High-impact ABS engineering plastic
• Bearing Type: Bushing supported output shaft
• Spline Count: 20-tooth standard micro servo spline

Dimensions:

• Length: 22.8 mm
• Width: 12.2 mm
• Height: 28.5 mm
• Weight: 13.4 g

Pinout and Wiring:

• Brown / Black Wire: Ground (GND) connected to the power supply and microcontroller common ground.
• Red Wire: Positive Power Supply (VCC), typically 4.8V to 6.0V DC.
• Orange / Yellow Wire: PWM Signal input line for receiving control pulses from a microcontroller.
• Note: However, always ensure your external power source can supply sufficient current during high-torque stalls to prevent microcontroller resets.

Datasheet Reference:

• Download TowerPro MG90S Datasheet

Commonly Used in:

• RC Airplanes and Helicopters: Controlling control surfaces, flaps, and swashplate linkages.
• Miniature Robotics: Actuating robotic arms, gripper jaws, and walking mechanisms.
• Pan and Tilt Cameras: Driving camera orientation platforms for automated tracking systems.

Applications:

• Smart Home Automation: Operating automated window blinds, miniature door locks, and valve controls.
• Interactive Art Installations: Moving kinetic sculptures and display elements requiring smooth periodic rotation.
• Educational STEM Kits: Teaching students principles of servo mechanics, pulse-width modulation, and robotic control.

Equivalent Models:

• SG90: A lighter plastic-geared micro servo, although it lacks the high torque and metal durability of the MG90S.
• MG92B: An upgraded digital metal gear servo featuring higher torque output and ball bearing support.
• FT90M: A comparable continuous rotation or positional metal gear micro servo designed for similar operating voltages.

Package Includes:

• 1 x MG90S Metal Gear Servo Motor
• 1 x Set of Servo Horns and Mounting Screws