Servo drive Tower Pro 9g

The TowerPro SG90 9g Mini Servo is an ultra-lightweight analog actuator for light-payload articulation, custom pan-and-tilt FPV camera mounts, and control surfaces on micro aircraft. It features a nylon gear train, a compact 9g housing, a wide 3.0V to 7.2V operating window, and a 1.6 kg/cm torque ceiling at 6.0V.

Features

Ultra-Lightweight 9g Footprint: Minimizes bulk and deadweight, protecting flight balance.

Precision Nylon Gear Train: Provides smooth rotation and lower mechanical tracking noise.

Extended 245mm Lead Wire: Long pre-installed cable eliminates the need for manual extensions.

Wide Voltage Range: Compatible with standard 5V/6V BEC pads or single-cell receiver batteries.

Responsive 7µs Deadband: Delivers quick response to PWM adjustments, minimizing drift.

Specifications

Brand: TowerPro

Model: SG90 Mini Micro Analog Servo

Gear Material: Structural Nylon

Deadband Width: 7 µs

Dimensions: 32.0 mm × 30.0 mm × 12.0 mm

Net Weight: ~9.0 g

Stall Torque: 1.2 kg/cm (@ 4.8V) / 1.6 kg/cm (@ 6.0V)

Speed: 0.12 sec / 60° (@ 4.8V, no load)

Voltage Range: DC 3.0V – 7.2V

Operational Instructions

Mounting: Secure the servo casing tabs using the included screws without over-tightening.

Centering: Power the servo and send a neutral signal (1500µs) to home the shaft before pressing the chosen horn onto the splines.

Wiring: Connect the universal block to your receiver or flight controller PWM rail: Brown/Black (GND), Red (+5V/+6V), Orange/Yellow (Signal).

Testing: Run a manual sweep to ensure control surfaces or camera mounts move freely without hitting structural frame plates.

Notes

Nylon Gear Limits: Optimized for low loads. Avoid using on high-velocity control surfaces or high-impact mechanisms that can strip nylon teeth.

Stall Risk: Ensure the mechanism does not jam. Physical blockages cause maximum current draw, leading to rapid heat buildup and electronic failure.

Analog Protocol Only: Use standard analog parameters (50 Hz to 60 Hz PWM frequency). High-frequency digital protocols will destroy the control board.

BEC Amperage: Ensure your 5V/6V BEC has enough continuous capacity (at least 2A to 3A) to handle current spikes and prevent flight controller brownouts.

Package

1 x TowerPro SG90 9g Mini Micro Analog Servo

1 x 250 mm Integrated Universal Three-Wire Cable

3 x Nylon Servo Horn Arm Adapters

3 x Mounting Screws