Sizing the 1FK2 against the SINAMICS S120 axis
The Siemens 1FK2204-5AF00-1MB0 is a SIMOTICS S-1FK2 CT servo motor from the 1FK2 servomotor family, intended for pairing with the SINAMICS S120 drive platform — the DRIVE-CLiQ M17 plug on the motor carries both the absolute encoder data and the electronic nameplate, so commissioning happens over the drive's automatic configuration rather than a manual parameter download (cites:,). Stall torque M0 is 2.4 Nm, with a rated power point of 0.75 kW at nN = 3000 rpm on a 380–480 V supply, and an alternate rating of 0.375 kW at nN = 1500 rpm on a 200–240 V supply — the higher-voltage point is the figure that governs SINAMICS S120 line-side sizing, while the lower-voltage point matters where the axis is fed from a 230 V drive section (cites:).
Mechanical and feedback specifications for integration
Shaft is D19 × 40 mm with feather key, and the degree of protection is IP64 — adequate for an enclosed cabinet-mounted axis or a sheltered machine interior, but not for direct washdown or outdoor duty where a higher IP rating would be required (cites:). The absolute encoder is the AM22DQC, 22-bit single-turn plus 12-bit multiturn, meaning the drive retains absolute position through power cycles without a homing move on every restart — a practical point on lines where reference travel is constrained or slow (cites:).
Compliance and order identifiers
Compliance documentation under record is RoHS conformity since 01-07-06, plus the REACH Art. 33 duty-to-inform statement covering the current candidate list — for export shipments and EU end-customer record-keeping, both documents travel with the part on request (cites:,). Ordering identifiers on the line are Group Code R220 and Product Group 9021 — useful when matching a Siemens Industry Mall configurator output, a legacy BOM line, or a customs declaration against the physical motor and its nameplate (cites:,).
Sourcing posture for this build
Packaging is one piece per shipper at 452 × 250 × 267 mm — the same box geometry Siemens uses across the 1FK2 family simplifies MRO shelf planning when a spare is held against an axis of this frame size (cites:,).