What the motor is and where it drops in
The 1FL2104-2BF11-1MC0 is a SIMOTICS S-1FL2 low-inertia servo from the 1FL2 family — 400 V 3AC supply, 0.75 kW rated power, 3000 rpm rated speed, 2.4 Nm continuous torque (M0 = Mn, so stall and rated torque coincide at this frame), 40 mm shaft height, with a hybrid connector and a holding brake built in. It pairs only with the SINAMICS S200 drive — the encoder protocol, power lead, and brake wiring are keyed to that controller, so substitution to a third-party drive is not a wiring-swap exercise.
Sizing the rating against the mechanical axis
0.75 kW at 3000 rpm with 2.4 Nm continuous is the headline envelope; the 400 V 3AC supply means it is fed from a regulated SINAMICS S200 DC-link, not a direct-on-line mains, so the drive handles the inrush and braking-regen profile. Because M0 equals Mn at 2.4 Nm, the motor delivers rated torque all the way down to a near-zero base speed without field weakening — that's why this frame lands in short-stroke indexing, pick-and-place, and small-format packaging axes rather than long-constant-speed applications. The 40 mm shaft height is the SH40 frame, the smallest in the 1FL2 family; this keeps the rotor inertia low for fast acceleration/deceleration cycles, but it caps peak torque relative to the SH52 and SH80 siblings — pick the frame by the RMS torque the cycle demands, not by the headline kW figure.
Procurement posture for a made-to-order part
Catalog taxonomy places it under Group Code R220 and Product Group X0DK — those strings govern how the part routes through Siemens' order tooling and which sales region can quote it, not the engineering spec. Compliance on file: RoHS conformity since 2018-01-01, REACH Art. 33 information disclosed, and export classification ECCN N / AL N (no licence required for typical destinations). Each unit ships singly in a 382 × 222 × 240 mm pack.