Futaba S3003 Standard Servo Motor 180 Degree 3.2kg-cm Nylon Gear

The S3003 standard servo motor from Futaba is a widely used analog actuator for radio-controlled models, robotic mechanisms, and general position-control projects. It provides 180 degrees of rotation, approximately 90 degrees to each side of center, and uses a 25-tooth 3F spline output shaft that fits common servo horns and linkages. The servo operates from a 4.8V to 6.0V DC supply and delivers a stall torque of 3.2 kg-cm at 4.8V, rising to 4.1 kg-cm at 6.0V, while no-load speed is 0.23 sec/60° at 4.8V and 0.19 sec/60° at 6.0V. Its nylon gear train, 3-pole ferrite motor, and indirect potentiometer drive keep the unit lightweight and cost-effective for hobby and educational use. The S3003 accepts a 3V to 5V peak-to-peak pulse signal and rotates counterclockwise as the PWM signal increases. It operates across -20°C to +60°C and measures 44mm × 20mm × 40mm. The servo can be modified for continuous rotation, making it adaptable to wheeled robot drive systems in addition to standard angular positioning tasks such as steering and control-surface movement.