SINAMICS S120 servo motor on a hot end-of-life line
The 1FK7040-5AK71-1EG5 is a Siemens 1FK7-series synchronous servo motor from the SINAMICS S120 drive family, classed as a Servo Motor under the Motors & Motor Controls branch of the catalogue. It is the rotating half of a closed-loop position/speed axis — paired with a SINAMICS S120 drive line-up on the cabinet side and a multi-turn absolute encoder on the shaft end — and is built into motion-controlled machines where dynamic response and repeatable positioning matter: indexing tables, packaging lanes, machine-tool feed axes, and similar high-duty-cycle servo applications. Per the lifecycle record, the part is flagged as eol_hot. That classification drives the sourcing channel: independent distribution, with availability and pricing confirmed at RFQ — there is no claim of current production, and any future procurement must be planned against the broker/surplus market rather than a normal factory-direct lead time.
Commissioning and replacement notes
As a SINAMICS S120-compatible 1FK7 servo, the motor is parameterised inside the drive's electronic rating plate during commissioning — the drive auto-reads the motor identity over the DRIVE-CLiQ link on first power-up, so a field replacement typically only requires confirming the order code on the nameplate and the DRIVE-CLiQ port assignment before the axis is released. The drive then reads encoder resolution, pole count, and thermal model from the motor's memory.
Compliance documentation on record
Compliance paperwork beyond the manufacturer traceability (brand identifier) is not present in the record and must be obtained with the unit at the point of order if required for the receiving site's tender documentation.