Lifecycle hook and what changes at the bench
The 1FK7034-2AF2.-.... ships listed as eol_hot, so the conversation starts at last-time-buy windows, not at a fresh reorder schedule — whatever is on the shelf or in broker inventory is what there is, and the BOM line either gets a known-good spare now or a migration plan onto a still-active 1FK7 frame. What is on the nameplate is a SIMOTICS S 1FK7-CT synchronous servo motor: PN=0.47 kW, UDC=300V, M0=1.6Nm at the 100K winding, NN=3000rpm, naturally cooled — a compact low-inertia frame sized for high-dynamic positioning on a SINAMICS S120 drive line rather than for continuous-torque duty.
Reading the ratings against the application
PN=0.47 kW and NN=3000rpm put this frame in the small-format pick-and-place / indexing / small-axis servo bracket — the rated speed sits well above what a 4-pole induction motor would deliver at 50/60 Hz, which is exactly why the drive side is a SINAMICS S120 (or comparable) with a regulated DC bus, not a plain V/Hz drive. UDC=300V means the motor is wound for a 300 V DC link, matching the rectifier output of a 230 V-class SINAMICS line; pairing it with a 400 V-class drive pushes the field-weakening corner in and shortens the constant-power range, so the drive commissioning parameters need to be re-checked against the actual bus voltage on the cabinet. M0=1.6Nm at the 100K temperature class and natural cooling (no fan on the motor) means the continuous torque rating is the standstill figure derated for the surface-mounted housing — in a sealed cabinet the thermal headroom shrinks fast, so ambient and mounting plate temperature are the real sizing inputs, not the catalog M0 number alone.
Sourcing posture on a hot EOL line
For a controls engineer staring at a midnight startup, the practical question is whether the spare on the shelf decodes to the same winding and encoder option as the one being swapped — the dashed suffix on 1FK7034-2AF2.-.... carries the encoder / shaft / holding-brake options, so the replacement order code has to match the full string, not just the base.
What to confirm before commissioning the replacement
On the drive side the motor's encoder resolution and order code suffix drive the auto-configuration in STARTER / SINAMICS StartDrive — a 1FK7 with an absolute encoder and a 1FK7 with an incremental encoder do not commission from the same drive parameter set, and the wrong selection is the most common reason a 'good' motor throws a fault on first power-up.