0.75 kW at 3000 rpm — what the motor delivers
The Siemens 1FK2104-5AF01-0MB0 is a SIMOTICS S-1FK2 HD synchronous servo motor with a stall torque M0 of 2.4 Nm and a rated power PN of 0.75 kW at a rated speed nN of 3000 rpm on a 380-480 V supply, dropping to PN of 0.375 kW at nN of 1500 rpm on a 200-240 V supply. The two-tier voltage/power rating is the practical hook — it specifies the same winding envelope against both the European 400 V class and the North American 200/240 V class without re-machining the shaft or remounting the connector, which matters when a panel is being designed for export or a retrofit has to mirror an existing drive. Position feedback is an absolute encoder AM22DQC at 22-bit single-turn plus 12-bit multiturn resolution, terminated to the drive through a DRIVE-CLiQ M17 plug. The multiturn tracking means the axis retains its absolute position across power-down — no homing run on every restart, which is the practical difference between an absolute encoder and an incremental one on a packaging or pick-and-place line.
Mechanical and sealing — IP65 on a D19 cylindrical shaft
The shaft is a plain cylindrical D19x40 mm spigot, and the housing carries an IP65 degree of protection rating. On a food-and-beverage or washdown-adjacent cabinet that rating means the body resists water jets and dust ingress; it is not an IP67 submersion rating, so submersion or high-pressure washdown directly on the motor housing is outside the envelope. The cylindrical shaft — no keyway, no flat — points the motor at coupling-mounted loads rather than direct belt or pinion drives. Power is brought out through a size M17 power connector, separate from the M17 DRIVE-CLiQ feedback plug. The split between power and feedback on two M17 connectors is the standard SIMOTICS S-1FK2 HD harness layout — the cable set is keyed so a mis-plug between the two is mechanically prevented.
Lifecycle status and procurement reality
Substance compliance is documented to RoHS since 01-07-06, and a REACH Article 33 information obligation applies per the current candidate list. Packaging is a single piece per carton at 452.00 x 250.00 x 267.00 mm, group code R220, product group 9021. For a rebuild shop the order-code fingerprint — group, product group, and class — is what the OEM configurator matches against; getting those three fields right is what keeps a substituted order from being rejected at goods-in.
Functional peer — what it is not
The closest peer candidates in the surrounding group R220 are SINAMICS air-cooled power modules in blocksize format — 6SL3210-1PH24-2UL0, 6SL3210-1PH22-0AL0, and 6SL3210-1PH21-4AL0. Those are drive-side line modules, not servo motors, so they are not form-fit-function substitutes for the 1FK2104-5AF01-0MB0; the motor pairs with a SINAMICS drive, and the drive is what the listed peer codes identify. A panel that was originally specified around a SINAMICS power module keeps that module; replacing the motor with one of those drive codes is a category error.