What this motor is on the line
The 1FK2104-4AK10-0MB0 is a Siemens SIMOTICS S-1FK2 HD servo motor from the SIMOTICS family of brushless AC servos, configured with an integrated holding brake and the 22-bit + 12-bit multiturn absolute encoder AM22DQC behind a DRIVE-CLiQ M17 interface (cites:). It belongs to the Servo Motors with Brake class (cites:) and is listed as product group 9021 within Siemens ordering-data group R220 (cites:,). In deployment it sits on the motor side of a SINAMICS S120 drive line — the DRIVE-CLiQ M17 plug handles both encoder feedback and electronic nameplate to the controller, which is how the drive learns the motor's winding data and encoder resolution on first power-up without manual parameter entry (cites:). The holding brake fits the standard servo axis pattern: clamp the load at standstill, release under drive enable, and ride through power-loss events on a vertical or inclined axis (cites:).
Key ratings decoded
Stall torque M0 = 1.27 Nm is the figure that sizes the axis for the peak hold or jog condition, not the continuous running torque; the rated powers are 0.6 kW at nN = 6000 rpm on a 380–480 V DC-bus system and 0.4 kW at nN = 3000 rpm on a 200–240 V DC-bus system, so the same motor winds are specified for both line-voltage classes rather than being a single-region variant (cites:). The cylindrical shaft is D19 x 40 mm and the degree of protection is IP64 — sealed against dust ingress and splash water from any direction, but not rated for pressure washdown, so the typical installation is inside an enclosure or on a machine with directed splash exposure only (cites:). The power connector is M17 size, matching the DRIVE-CLiQ M17 feedback connector; both are keyed and locking, which matters on a moving axis where a standard M23 could vibrate loose (cites:).
Lifecycle stage is recorded as current (cites:) and the product status is Active (cites:), so the part is in serial production and the firmware/encoder object set stays inside the standard SINAMICS topology without forced migration to a successor frame. RoHS compliance has been in effect since 01-07-06 and REACH Article 33 information is carried under the standard Reach Information clause (cites:,). The commercial class is the make-to-order 'C' group (cites:) — products manufactured/produced to order, which cannot be reused or re-utilized and are not returnable against credit. In practice that means the motor is built against a confirmed purchase order rather than pulled from a stocked shelf; lead time and price are confirmed at RFQ and standard distributor return rights do not apply (cites:).
Packaging and traceability
Quantity unit is 1 piece (cites:,) and packaging dimensions are 452.00 x 250.00 x 267.00 mm (cites:) — the box footprint that ships from the factory for a single motor. Group code R220 / product group 9021 (cites:,) are the ordering-data keys used to confirm the right product family is being pulled during goods-in.