Sizing the servo into a SINAMICS axis
Siemens 1FK2104-4AK10-1MB0 is a SIMOTICS S-1FK2 HD servo motor with M0=1.27 Nm stall torque, rated PN=0.6 kW at nN=6000 rpm on a 380-480 V supply and PN=0.4 kW at nN=3000 rpm on a 200-240 V supply, which means the same winding covers both 230 V and 400/480 V drive cabinets — pick the lower-torque / lower-speed rating when you commission on a 230 V line and the 6000 rpm rating when the cabinet is 400 V class. The shaft is D19x40 mm with feather key, the encoder is a 22-bit single-turn + 12-bit multiturn absolute encoder (AM22DQC), and both the power and feedback sides use the M17 family of plugs — DRIVE-CLiQ on the feedback end and an M17 power connector — so it drops straight onto a SINAMICS S120 drive-cliq port without an external adapter. Holding brake is integrated, and IP64 means the housing is dust-tight and protected against splashing water from any direction — adequate for a cabinet-mounted axis or an enclosed machine, not for a washdown cell or a submerged application.
Catalog anchors for documentation and traceability
The order code sits in Group Code R220, Product Group 9021, and is shipped as one piece per package in a 452.00 x 250.00 x 267.00 mm carton — useful when you cross-reference the line on a packing slip, a customs declaration, or the factory submittal. Product class C flags this as a configured-to-order item: it is manufactured against the order, is not returnable for credit, and is not a stockable commodity at the distributor level — plan lead time against the BOM freeze, not the next morning. Export control markings are AL: N / ECCN: N_CNDU, i.e. not on the U.S. dual-use list and not on a national-licence list, so routine cross-border shipments do not require a per-shipment export licence on this classification.
Production status and how to source it
Because it is a configured-to-order product class, the natural sourcing channel is quoted-to-order against the BOM: the configuration (brake option, encoder, connector family, shaft key) is locked at order entry, lead time and pricing are confirmed at RFQ, and there is no same-day ship from a stocked shelf on this code.