What this motor is and where it bolts in
The 1FK2104-4AF01-0MB0 is a SIMOTICS S-1FK2 HD synchronous servo motor in the 0.4 kW class, specified at PN=0.4 kW at nN=3000 rpm on a 380-480 V DC link and PN=0.2 kW at nN=1500 rpm on 200-240 V, so it covers the SINAMICS S210 / S120 drive range at either bus voltage without a motor swap. It ships with a cylindrical shaft D19x40mm and a 22-bit + 12-bit multiturn absolute encoder (AM22DQC) on a DRIVE-CLiQ M17 plug, meaning the commissioning engineer gets electronic nameplate auto-load over DRIVE-CLiQ rather than manual parameter entry at first power-up.
Torque, thermal envelope, and IP65 housing
M0=1.27 Nm is the stall torque the motor holds at zero speed with the winding at its continuous thermal ceiling — sizing this motor against the application's peak load torque is the first check, because intermittent peak (Mmax) above M0 will trip the i²t model on the drive side within seconds. IP65 on the housing means the motor body and connector face withstand water-jet washdown and dust ingress — it is specced for the shop-floor cabinet exterior and for machine sections where coolant and cutting fluid splash, but not for full submersion; the M17 connector sealing ring is what holds that rating, so the cordset side has to match. Packaging dimensions 452.00 x 250.00 x 267.00 mm tell the panel builder and MRO planner the carton footprint for inbound handling and storage — this is a single-piece quantity unit with no inner multipack, so every order ships one motor per box.
Compliance paperwork the buyer expects
RoHS compliance has been in force since 01-07-06, so the part meets the substance restriction directive for EU shipment and for any build that ships into RoHS-jurisdiction equipment. REACH Art. 33 duty-to-inform applies — Siemens publishes the current candidate-list substance information, which the receiving manufacturer needs for their own EU declaration file.
Ordering data and traceability fields
Group Code R220 and Product Group 9021 are Siemens internal ordering-class identifiers — the quality-document control reviewer uses these on the packing slip and factory certificate to confirm the line item came out of the correct production group. Product class C marks this as built-to-order: each unit is manufactured per the order configuration and cannot be returned for credit, which matters for the MRO planner ordering a one-off spare — the RFQ should confirm the exact option suffix before the factory accepts the order.
Sourcing posture for the line-down buyer
Lifecycle stage is current and the product status is Active, so the motor remains in Siemens production — no last-time-buy window is open and no official successor has been published. Independent distribution quotes this part against the BOM at RFQ; pricing and lead time are confirmed per order because Product class C rules out returns-for-credit and stock holds vary with the factory build slot.