Where this 1FL2104-4BF11-0HC0 slots in the cabinet
The Siemens 1FL2104-4BF11-0HC0 is a SIMOTICS S-1FL2 low-inertia servomotor sized for the SINAMICS S200 drive family, rated for a 400 V 3AC supply at Pn=1 kW with a rated speed of 3000 rpm and continuous/stall torque of 3.2 Nm on a 40 mm shaft-height frame. Shaft detail matters to the mechanical fit: the motor ships with a plain shaft, tolerance N, and an integrated holding brake, so it drops straight into vertical-axis or gravity-loaded axes where the brake holds position on loss of the control enable. The AS-i 17-bit absolute encoder feedback is the version that gives the SINAMICS S200 amplifier the absolute position it needs at power-up without a homing routine.
Ratings that drive the BOM decision
Pn=1 kW at Nn=3000 rpm with M0=Mn=3.2 Nm means the motor is designed for cyclic, fast-acceleration duty rather than long constant-torque running — the equal stall and rated torque tells you the thermal envelope is set by the dynamic cycle, not a continuous stall. At a 400 V 3AC bus that maps cleanly onto the standard S200 line input without a step-up transformer. Protection class IP65 with oil seal (the shaft seal upgrade over a standard IP65) is the version to specify when the gearbox or coupling sheds oil mist onto the motor face — a dry IP65 housing is not enough on a machine-tool gearbox flange. The hybrid connector on the power and signal side cuts panel-side wiring to one plug instead of a separate encoder cable and power lead.
Lifecycle, compliance, and the procurement angle
Lifecycle status is listed as current and the brand line is active, so the part is in normal production today rather than a last-time-buy exercise. Class C is stamped on the order: this is built-to-order, not a stocked catalog line, and it is not returnable for credit — the right quantity lands on the BOM the first time. Compliance posture is clean for European builds: RoHS compliant since 01-01-18, REACH Article 33 candidate-list disclosure applies, and export control is AL:N / ECCN:N so no export-license paperwork is triggered on a typical cross-border shipment to a standard industrial destination. Group Code R220 and Product Group X0DK are the internal classification fields that line the part up with the Siemens commercial ordering and pricing structure; for the buyer they are useful as cross-reference keys when matching the motor against a quote line or a project BOM. The single-piece carton at 382 x 222 x 240 mm is the standard factory pack — one motor per box, no quantity break at the carton level. Sourcing through independent distribution is the practical route for a class-C built-to-order motor: the order lands on the factory queue and is scheduled against the next production window, with lead time and pricing confirmed at RFQ. There is no shop-shelf stock to promise from, so the realistic posture is quoted-to-order against the BOM rather than same-day shipment.