What this motor actually is on the nameplate
The Siemens 1FK2104-5AK10-2SB0 is a SIMOTICS S-1FK2 HD synchronous servo motor from the 1FK2 family built for SINAMICS S120 drive systems, with a holding brake fitted as standard and a 22-bit single-turn absolute encoder (AS22DQC) read back through the DRIVE-CLiQ plug. It is sized for two operating points: PN = 1.07 kW at nN = 6000 rpm on a 380–480 V supply, and PN = 0.75 kW at nN = 3000 rpm on a 200–240 V supply — so the same motor covers both a 230 V-class and a 400 V-class SINAMICS line configuration without rewiring, only a parameter set change at commissioning. The mechanical envelope is a cylindrical shaft D14 × 30 mm with a holding brake, IP64 sealing on the body, and a power connector size M17 — meaning the wet side of the seal and the power/signal connectors all live at the same M17 form factor that the SINAMICS S120 wiring harness expects.
Where it sits in a panel and what guards it
IP64 on this motor means dust-tight and resistant to splashing water from any direction — fine for an enclosure-fed machine tool or packaging line where the cabinet is sealed but the motor itself may see wash-hose overspray or coolant mist, not for direct high-pressure jet or full immersion duty. The M0 = 2.4 Nm stall figure next to the 1.07 kW continuous rating tells you this is a low-inertia HD-frame unit: it is the motor you reach for when the load needs fast acceleration cycles (indexing tables, pick-and-place, small CNC spindles) rather than the heavier 1FT/1FK7 frames tuned for steady torque at low speed. DRIVE-CLiQ is the digital feedback cable that carries encoder, temperature and electronic nameplate data straight into the SINAMICS S120 — at commissioning the drive auto-configures from the motor ID, so a junior tech doesn't need to type in encoder resolution or motor parameters by hand. That is one less place for a wrong number to land in the firmware.
Compliance, order codes, and what shows on the PO line
Order-line identifiers carry through as Group Code R220 and Product Group 9021, which are the codes a Siemens sales channel or ERP will key off when matching the line against a quote or invoice — worth keeping on the BOM record so reorder and warranty lookups land on the right SKU the first time.
Sourcing posture for this build-to-order line
Packaging ships as a single piece in a 452 × 250 × 267 mm carton — useful to know for crate-out and the receiving dock, since a built-to-order servo with a factory-fitted encoder is not something you want rolling around on a shelf pallet waiting for someone to open it. Because product class C locks the order in once placed, the right move on a new machine build is to quote against the BOM quantity with the drive-matched SINAMICS line, lock the lead time against an RFQ, and stage the motor against the cabinet build rather than buying ahead on speculation.