The motor in the line
The 1FK7044-7AF71-1UG5 is a Siemens 1FK7 high-dynamic synchronous servo motor, the compact high-inertia workhorse of the SIMODRIVE-era SINAMICS feed chains — a brushless synchronous servo with a permanent-magnet rotor, built to sit on the back of a gearbox or directly on a ball-screw axis where dynamic response matters more than peak stall torque.
Lifecycle read
For a retrofit that already runs on 1FK7 hardware, the practical posture is to source against an RFQ from independent distribution while the last factory batches are still being released, rather than gamble on a redesign.