Siemens 1FT6108-8SF71-4TA0 Synchronous Servo Motor

Siemens SIMOTICS S synchronous servomotor 1FT6108-8SF71-4TA0 is a three‑phase servo motor designed for closed‑loop motion control, delivering 90 Nm of continuous torque at up to 3000 rpm in the compact 1FT6 frame. Built for forced‑ventilation operation (IM B5) with a power and signal connector and an axial DE outlet, it integrates a resolver encoder with 100K resolution (resolver P=1) and includes a feather key with a circular runout tolerance of N. The unit features IP64 protection with a labyrinth seal and is supplied without a holding brake, accompanied by a vibration severity rating N. The engineering drawing lists a mass of approximately 61.5 kg for the complete motor assembly. Suitable for high‑precision positioning in automated systems, this model is part of the SIMOTICS S family and is designed to be driven from three‑phase power, with a nominal voltage specification of 276 V and a maximum speed of 3,000 rpm.