FEETECH FT2331M Servo Motor

The FT2331M is a precision 6V 4.5kg.cm digital servo engineered with a durable aluminum case, metal gear, plastic POM horn type, and 2 ball bearings. Powered by a high-efficiency coreless motor, this no-limit servo features an operating voltage range of 4.8–6V, delivering a peak stall torque of 3.5kg.cm, a rated torque of 1.16kg.cm, and a fast no-load speed of 0.07sec/60° at 6V. Its electrical specifications include a stall current of 1000mA, a running current of 150mA at no load, and an idle current of 4.8–6.0mA. Utilizing pulse width modulation via a digital controller, the servo supports a pulse width range of 900–2100 µsec with a stop position at 1500 µsec and a tight dead band width of 2 µsec. It offers a 240° running degree (at 500→2500 µsec) and operates counterclockwise (when 1000–2000 µsec). This compact servo weighs 20±0.2g, measures 23mm × 12mm × 27.5mm, and includes a 25T (OD4.92mm) horn gear spline with a 150mm±5mm connector wire.

Common use cases: Compact humanoid robot finger, wrist and ankle joints requiring 240° position control in a 20g package, educational robot platforms with standard PWM control, small RC models, and applications needing coreless motor responsiveness with metal gears at 4.8–6V.