What this motor is and where it slots in
The 1FK2104-6AF11-0SB0 is a Siemens SIMOTICS S-1FK2 HD synchronous servo from the 1FK2 family sized for SINAMICS S120 drives. It carries an integrated holding brake and a DRIVE-CLiQ M17 feedback connector for plug-and-play commissioning on the S120 drive lineup. Group Code R220 / Product Group 9021 — that's the Siemens commercial classification this SKU lives under, useful when cross-checking it against an existing BOM line or a sister order.
Reading the headline ratings for fit
Rated 1 kW at 3000 rpm on a 380–480 V bus and 0.5 kW at 1500 rpm on a 200–240 V bus — two operating points on the same winding, which is what you spec against when matching the motor to a SINAMICS S120 line module. Holding torque M0 = 3.2 Nm sets the static holding capability the brake is sized to lock against. Shaft is cylindrical D19 x 40 mm, encoder is AS22DQC single-turn 22-bit absolute, and the connectors are M17 DRIVE-CLiQ plus M17 power — the same footprint pattern other 1FK2 HD motors use, so mounting plates and cable harnesses across the family interchange. IP65 degree of protection means the body and shaft seal hold up to directed water jets and dust — fine for a typical machine-tool or packaging-line enclosure, not for submerged or high-pressure washdown.
Compliance and paperwork that travel with the unit
RoHS-compliant since 01-07-06, REACH Art. 33 candidate-list information on file, and ECCN declared as N_CNDU with AL: N — no export-control paperwork needed for routine commercial shipment.
Sourcing posture for this build-to-order SKU
Product class C — built to order, not a returnable stock unit, packaged one piece per shipper at 452 x 250 x 267 mm. That means RFQ-driven: confirm quantity, lead time, and pricing at quote time rather than expecting shelf-stock availability.