Slotting it into the SINAMICS S210 line
The 1FK2104-4AK11-0SA0 is a SIMOTICS S-1FK2 HD servo motor from the 1FK2 product family, built to pair with a SINAMICS S210 drive — the HD shaft, the M0=1.27 Nm stall torque and the holding brake identify this frame as a high-dynamic positioning axis, not a general-purpose induction machine. Two nameplate envelopes are stated: 0.6 kW at nN=6000 rpm on a 380-480 V bus and 0.4 kW at nN=3000 rpm on a 200-240 V bus, so the same motor is specified differently depending on the converter's line voltage — the higher-voltage pair is the natural fit when the cabinet is already fed from a 400 V class supply.
Mechanical package, sealing, and feedback
Shaft is a cylindrical D19 x 40 mm stub with an integrated holding brake, the conventional mount for a gearbox input or a belt-coupled ball-screw — the brake holds the axis at zero speed without continuous current on the coil. Sealing is IP65 on the motor body, which is the right level for a food-and-bev or washdown-adjacent machine tool enclosure but not for direct high-pressure spray down; the cable entry is a rotatable M17 plug so the lead can be dressed to the cabinet without re-routing the harness. Position feedback is an absolute encoder AS22DQC, 22-bit single-turn, with an OCC interface — that resolution is sized for precision indexing and short-stroke kinematics where the axis never leaves one revolution between reference moves, and the digital interface simplifies commissioning on the S210 because the encoder parameters load from the motor nameplate electronically rather than from a manual entry.
Ordering class, compliance posture, and sourcing
Lifecycle is recorded as current and the unit ships under product class C — manufactured or produced to order, which is not reusable or returnable against credit; the BOM line is committed at order placement and the lead-time clock starts from there. Export-control markings read AL:N / ECCN:N_CNDU, so this code is not on a restricted-list export track; cross-border shipping does not require an EAR-style license review beyond the standard commercial invoice flow. Group code R220 and product group 9021 are the ordering/admin metadata to reference on the PO line — keep these on the purchase order so the Siemens back-end routes the line to the right configurator, especially when the BOM sits alongside other S210-family parts.