What this servo is sized to do on the line
The Siemens 1FL2104-4BF11-0SC0 is a SIMOTICS S-1FL2 servomotor in the low-voltage 400 V 3AC class, rated 1 kW continuous (Pn) at a nominal speed of 3000 rpm, with stall and continuous torque both at 3.2 Nm — meaning the motor delivers full torque right down to zero speed without falling out of the continuous envelope (cites:). The 40 mm shaft height puts it in the compact frame range typically used for indexing tables, small gantries, lab automation, and packaging kinematics where the load inertia is modest but positioning repeatability matters (cites:). This is part of the 1FL2 family engineered as the matched servomotor for the SINAMICS S200 drive line — the pairing matters because default parameter sets, encoder scaling, and braking resistor sizing are tuned for that drive, not a generic third-party amplifier (cites:,).
Mechanical and electrical build that drives the wiring plan
Connection is via a hybrid connector carrying power and the AS21bit absolute encoder in a single plug — only one cable to land at the cabinet, which keeps the panel-side gland count down and removes the encoder-shaft alignment step at install (cites:). The shaft is plain (no keyway) to tolerance N, and a holding brake is fitted for vertical-axis or gravity-loaded applications where the rotor must hold position with the drive de-energised (cites:). Protection class is IP65 with oil sealing, so the motor body and shaft seal withstand coolant splash and cutting-fluid mist common on machining cells and small-format machining centres — it is not a washdown-rated food-grade enclosure, but it survives the shopfloor environment (cites:).
Substance compliance and order metadata
RoHS compliance is declared with effect from 01-01-18, and REACH Art. 33 candidate-list information is provided — the documentation pack supports EU shipment and most OEM build declarations without further paperwork (cites:,). Export control classification is AL:N / ECCN:N, so no special licence is required for cross-border shipment under standard commercial terms (cites:). Order admin fields are Group Code R220, Product Group X0DK, one-piece quantity unit, with packaging dimensions 382 x 222 x 240 mm for a single unit (cites:,).