What the headline motor data tells the integrator
The Siemens 1FK2104-5AF10-2SB0 is a SIMOTICS S-1FK2 HD synchronous servo in the 1FK2 family, sized for SINAMICS S120 drive control — 0.75 kW continuous at 3000 rpm on a 380–480 V bus, and 0.375 kW at 1500 rpm on a 200–240 V bus, with a 2.4 Nm static torque figure that sets the low-speed holding capacity the holding brake is sized against. The feedback channel is an absolute single-turn 22-bit encoder (AS22DQC) over a DRIVE-CLiQ plug M17, which is the native digital feedback path on SINAMICS S120 — no external encoder cable, no separate battery box for absolute position retention.
Mechanical package and shaft for panel layout
Shaft is a plain cylindrical D14 × 30 mm — no keyway on this code, so coupling choice is a clamped or interference-fit element rather than a keyed coupling; the holding brake integrates into the motor housing so the brake leads the cable exit, not the shaft end. Degree of protection is IP64 — dust-tight and protected against splashing water from any direction, which covers typical cabinet-through mounting where the motor body sits inside or just outside the panel seam but is not exposed to jet wash or submerged service.
Compliance documentation that ships with the line
Siemens declares RoHS compliance for this code since 01-07-06, so the part predates the common 2019 scope expansions and is on the legacy substance list — no RoHS exemption paperwork is expected on incoming inspection. REACH Article 33 duty-to-inform applies, with the candidate-list status tracked under the Reach Information reference carried by Siemens for this MPN — the importer of record is the one who holds that disclosure on file for customs and downstream inquiries. Export-control classification is AL:N / ECCN:N_CNDU, which means no U.S. export license is required for cross-border movement of this part, simplifying the paperwork when the unit ships out of a European Siemens hub to a third-country destination.
Lifecycle and procurement posture
Procurement identifiers carried by Siemens are Group Code R220 and Product Group 9021; these are the codes to quote on the PO and the codes customs brokers and inventory systems use to key the line — the product class is C (made-to-order, non-returnable), which is the standard Siemens posture for configured servo motors.