0.75 kW CT servo in the 1FK2 family
The 1FK2204-5AF00-1SB0 is a SIMOTICS S-1FK2 CT servo motor from the 1FK2 line that pairs with SINAMICS S120 drives, rated PN = 0.75 kW at nN = 3000 rpm on 380-480 V and PN = 0.375 kW at nN = 1500 rpm on 200-240 V, with a stall torque M0 = 2.4 Nm. For an integrator that means one motor covers both the European 400 V class and the North American 230 V class without a re-spec, and the holding-the-micron motion profile stays deterministic across the voltage envelope the S120 line is built to swallow. Feedback is an absolute encoder single-turn 22-bit (AS22DQC), wired through a DRIVE-CLiQ M17 plug, with a separate M17 power connector — the digital, cyclic DRIVE-CLiQ path keeps the position loop inside the S120 cycle rather than dragging it through an external pulse train. On a multi-axis machine the loop stays in lockstep with the other drives on the same DRIVE-CLiQ island, which is what keeps the following error from drifting when you push the feed hold.
Shaft, seal and cabinet fit
The shaft dimensions and keyway match the standard 1FK2 frame footprint the existing gearbox and coupling stock was designed around, which keeps a retrofit on a 5-axis machining center to a mechanical drop-in rather than a re-mount. The motor ships as a single piece in a 452.00 x 250.00 x 267.00 mm pack, group code R220 within product group 9021, RoHS-compliant since 01-07-06 and subject to REACH Art. 33 disclosure obligations — class C in the Siemens catalog sense, meaning it is produced to order and cannot be returned against credit. For a quality-doc pack that is the trace line a procurement auditor will want on the receiving docket: group code, product group, and the order-class note that frames the return policy before the unit ever lands on the shop floor.