TowerPro MG90S Metal Gear Servo, 90 Degree Rotation
by TowerPro

The TowerPro MG90S is a high-performance micro servo that upgrades the popular SG90 design with full metal gears and a ball bearing for significantly increased durability and torque. Weighing only 13.4g, this servo delivers impressive strength in a tiny package, making it a favored choice for RC hobbyists building small to medium-sized planes, 450-class helicopters, and compact robotic projects. Its metal gear set and aluminum 6061-T6 shaft provide high resistance to physical stress and impacts that would typically strip plastic-geared alternatives.

Now featuring digital processing, the MG90S offers faster updates, greater holding power, and a much tighter dead band for precise positioning. It operates smoothly between 4.8V and 6.6V, fitting easily into standard 5V electronics and robotics circuits. With its universal "S" type connector, it is plug-and-play compatible with most major receivers including Futaba, JR, Hitec, and Spektrum.

Key Features

• Full Metal Gearing: Features a robust metal gear set with one ball bearing for smooth operation and long-life durability.

• Digital Precision: Internal circuitry processes PWM signals faster for better torque and holding power.

• High Torque-to-Weight: Delivers up to 2.2kg/cm of stall torque while maintaining a lightweight 13.4g profile.

• Aluminum 6061-T6 Shaft: Upgraded shaft material is stronger and lighter than traditional copper.

• Universal Compatibility: Equipped with a 3-wire JR-style plug that fits most standard RC receivers and Arduino-based controllers.

• Compact Micro Size: Identical mounting dimensions to the SG90, allowing for easy upgrades without changing brackets.

Technical Specifications

• Type: Digital Micro Servo

• Operating Voltage: 4.8V – 6.6V

• Stall Torque: 1.8 kg/cm @ 4.8V | 2.2 kg/cm @ 6.0V

• Operating Speed: 0.10 sec/60° @ 4.8V | 0.08 sec/60° @ 6.0V

• Gear Type: Metal Gears (Aluminum 6061-T6)

• Rotational Range: 180° (90° in each direction)

• Dead Band Width: 1μs – 5μs

• Temperature Range: 0°C to 55°C

• Dimensions: 22.8mm x 12.2mm x 28.5mm

• Weight: 13.4g

• Connector Wire Length: 175mm – 250mm

What’s Included

• 1x TowerPro MG90S Metal Gear Micro Servo

• 3x Varied Servo Arms (Horns)

• 1x Arm Mounting Screw

• 2x Case Mounting Screws