S-1FK2 HD on a SINAMICS S210 axis
The 1FK2104-4AK11-1SA0 is a SIMOTICS S-1FK2 HD servo motor built for direct pairing with a SINAMICS S210 drive — the motor, encoder, and OCC connector are sized so the S210 recognises the axis on plug-in and the closed-loop current loop starts without a manual motor-ID step. Holding torque M0 is 1.27 Nm with a rated output PN of 0.6 kW at nN 6000 rpm from a 380–480 V DC bus, or PN 0.4 kW at nN 3000 rpm from a 200–240 V DC bus, so the same motor covers both the European 400 V class and the North American 240 V class drive cabinets without a mechanical swap. Holding brake is integrated — the brake is wired through the same M17 plug and energised from the S210's brake output, so a vertical axis holds position on power removal without an external brake resistor or contactor.
Feedback, shaft, and the IP65 cabinet-side story
Feedback is a 22-bit single-turn absolute encoder (AS22DQC), which gives 4.19 million counts per revolution — enough resolution that an S210-driven axis can hold sub-arc-minute positioning at the load without an external second encoder on the gearbox output. The shaft is D19 x 40 mm with a feather key, matched to a standard zero-backlash coupling on a planetary or helical gearbox; the IP65 housing sealing is rated for the cabinet-to-machine gap typical of packaging, pick-and-place, and small-format converting lines, where washdown or oil-mist exposure is intermittent rather than continuous. The M17 signal plug is rotatable through roughly 360°, which lets the wireman dress the cable along the cable chain without twisting the connector body — important on S-curve axes where the motor flips end-for-end relative to the harness.
Lifecycle, compliance, and BOM-fit notes
Lifecycle is current on the manufacturer's listing, so the BOM line stays open for new builds — no last-time-buy window applies today, and independent distribution can quote the part against an RFQ at the current Siemens list. RoHS compliance has been declared since 01-07-06 and REACH Article 33 candidate-list information is published for the part, so EU ship-to destinations clear on substance-restriction grounds without a per-shipment derogation. Export control classifies the part as AL:N / ECCN:N_CNDU, which means no export licence is triggered for standard commercial destinations — the paperwork block on a project BOM stays clean. Product class is C — the motor is built to order with a non-returnable, non-reusable configuration, which matters for the procurement clause on a frame agreement: cancellations and quantity adjustments need to land before the production order opens, not after.
Sourcing posture for the S210 retrofit
For an S210 retrofit or line-down spare, the 1FK2104-4AK11-1SA0 is sourced through independent distribution and quoted against an RFQ with the BOM quantity — packaging is 1 piece per shipper at 452.00 x 250.00 x 267.00 mm, so a single-unit spare fits a standard courier carton without a pallet surcharge.