What 0.75 kW at 3000 rpm actually buys you on a SINAMICS S120 line
The Siemens 1FK2204-5AK11-0SB0 is a SIMOTICS S-1FK2 CT servo motor in the 1FK2 servomotor family for SINAMICS S120, with a static torque M0 of 2.4 Nm and a rated power of 0.57 kW at 6000 rpm on a 380–480 V supply, or 0.75 kW at 3000 rpm on 200–240 V — the lower-speed / lower-voltage figure is the one that sets the sizing envelope for a 230 V line. It is built for the 8 kHz / 62.5 µs current-loop clock on a SINAMICS S120, carries an absolute encoder single-turn 22-bit (AS22DQC), and talks back to the drive through the DRIVE-CLiQ M17 plug — so the motor and drive pair up digitally without an additional SMC module.
Mechanical interface and what the brake does for the application
The shaft is a plain cylindrical D19 × 40 mm with no keyway — clamp or shrink-fit coupling is the way to load it, and a keyed half on the driven side has to be added by the machine builder rather than relying on a factory keyseat. The integrated holding brake holds the axis stationary when the drive is disabled — on a vertical axis or a clamp-on a bottling line that means the load stays put on power loss without an external failsafe, but the brake is a holding device, not a dynamic stopping brake, so E-stop energy still goes through the drive's braking chopper. The power connector is a size M17 — same family as the DRIVE-CLiQ M17 feedback connector — and IP65 sealing on the motor body covers shaft-through and terminal box; the connector face rating follows the mated cordset, not the bare motor.
Compliance and what ships with the part
RoHS compliance has been in place since 01-07-06 and REACH Art. 33 candidate-list information is supplied with the product — for a European build these are the two declarations a quality doc-control check will ask for before accepting the motor into the BOM. Export-control classification is AL:N / ECCN:N_CNDU, so no special export licence is required for a standard cross-border shipment; packaging is a single-piece pack at 452 × 250 × 267 mm.
Production status and how to source it
Lifecycle is recorded as current and active (Group Code R220, Product Group 9021, product class C — built to order, not returnable against credit), so this is a running production line, not a phase-out or last-time-buy item — the BOM position is safe to commit without a PCN window in the near term. Product class C is the procurement signal worth flagging internally: this motor is configured and built per order, not pulled from generic shelf stock, so lead time and pricing are confirmed against the RFQ rather than off a published price list.