What the servo with brake actually delivers
The SIMOTICS S-1FK2 HD servo motor 1FK2104-6AF10-1MB0 sits in the 1FK2 family built for SINAMICS S120 drives, with a holding brake fitted as standard for vertical-axis and gravity-loaded holding without an external brake resistor path. Stall torque M0=3.2 Nm with a rated point of PN=1 kW at nN=3000 rpm on a 380-480 V bus; on a 200-240 V bus the same frame drops to PN=0.5 kW at nN=1500 rpm, so the DC-bus voltage on the SINAMICS line module decides which torque-speed envelope the integrator actually gets.
Mechanical stack and feedback
Shaft is D19x40 mm with a feather key — that keyed interface fixes the coupling selection (bellows or elastomer, both rated for the 3.2 Nm torque), and the 40 mm length gives room for axial float without overhanging the bearings. Encoder is the absolute AM22DQC at 22-bit single-turn plus 12-bit multiturn (4,096 revs retained without battery on the motor), which keeps the axis position valid through power-cycle loss without a reference run — important for line-down recovery on a retrofit where the homing sequence has been deleted. Connection is DRIVE-CLiQ on M17 for the feedback / hybrid cable, with a separate M17 power connector size — the dual-M17 layout means the panel-side harness is the standard S120 motor cable set, so a 1FK2 swap into an existing S120 rack meets it where the original motor already is. Degree of protection IP64: sealed against splashing and dust ingress, suitable for typical cabinet-flange or sheltered machine mounting; not washdown-rated, so on food, beverage, or outdoor skids the motor needs an enclosure upgrade or a hood.
Drop-in reality for retrofit work
Because 1FK2 is the Siemens-native servo for SINAMICS S120, an existing S120 topology — line module, motor module, infeed — accepts this motor without a control cabinet re-engineer; the DRIVE-CLiQ handshake pulls the electronic rating plate and the drive auto-configures the motor data. That is the retrofit path most integrators actually want: keep the SINAMICS rack, swap the motor, no rewiring of the fieldbus or the safety chain — provided the original 1FK2 motor in that axis shared the same shaft diameter and brake option.
Lifecycle and how it ships
Lifecycle is listed as active on the Siemens classification, and the product class is C — built to order, not re-usable and not returnable against credit, so the BOM line is firm-ordered against the configuration encoded in the order code rather than drawn from distributor shelf stock. Compliance: RoHS-conformant since 01-07-06 with REACH Art. 33 duty to inform per the current candidate list; export control lands at AL:N / ECCN:N_CNDU, which means no special licence for the standard export lanes. Packaging is one piece per ship-out at 452 x 250 x 267 mm — sized for a single motor plus its connection kit, not a multi-pack.
Sourcing posture for this build
Group code R220 and product group 9021 are the Siemens internal classification that the procurement system reads when the BOM line drops, useful for any EDI or supplier-master alignment where the buyer needs to match the right catalogue node.