How the 1FL2105-2AF01-1HB0 reads on a panel-builder's desk
The Siemens 1FL2105-2AF01-1HB0 is a SIMOTICS 1FL2 low-inertia servomotor in the 52 mm shaft-height frame, rated for a 400 V 3AC supply and continuous output of 1.5 kW at 3000 rpm with 4.6 Nm nominal torque and 5 Nm stall torque, paired at the drive side with a SINAMICS S200. It carries an absolute 17-bit encoder on the standard AS17 cable exit, a keyed shaft with N tolerance, and ships without a holding brake — meaning the brake selection, if you need one, falls to the next size in the line or to an external holding arrangement downstream of the gearbox. For sizing the integrator reads the stall figure first: 5 Nm at standstill is the ceiling the drive must hold during a controlled stop with shaft load still on the motor, and 4.6 Nm continuous at 3000 rpm is the value that maps to the 1.5 kW nameplate on the same line — derate both numbers if the ambient climbs above 40 °C or the mounting is thermally constrained, the same caveat Siemens prints in the derating curves of the 1FL2 series manual.
Mechanical configuration and what the build code implies
The build code on the 1FL2105-2AF01-1HB0 resolves to a shaft-height 52 mm frame with oil-seal-equipped housing rated IP65 at the body and cable entry — adequate for machine interiors with coolant mist and incidental washdown, but not a food-grade or submerged-junction deployment; if the line demands IP67 or higher you step up the sealing option rather than seal around the standard shaft. The keyed shaft with N tolerance lands in standard IEC fit; the absence of a holding brake means the motor cannot hold position under gravity load with power off, so any vertical axis relying on it needs a mechanical brake or a counterbalance strategy at the mechanism, not at the motor. The angular connector on the power and feedback end is the AS17 family — the cable is not the same cable set you'd use on a 1FK or 1FT drive, so confirm cable selection by drive-end part number and cable length at quote time; pin-out and shield termination follow the SINAMICS S200 documentation for the 1FL2 family, not the legacy 1FK2 pinning.
Compliance, identifiers, and the paperwork that has to follow the box
Compliance posture is light: the platform has been in scope of the RoHS directive since 01-01-18 and triggers REACH Art. 33 duty to inform against the candidate-list snapshot — no RoHS exemption letter required on this build. Export control is dual-use neutral with AL:N and ECCN:N, so it crosses most borders on a standard commercial invoice without an export licence; group code on the Siemens internal classification is R220 and product group X0DK, and the line is classed as a manufactured-to-order product that is not returnable for credit — plan storage coverage into the project rather than into a returnable spares pool.
Sourcing reality for an active, made-to-order line
Lifecycle status is current, and Siemens classifies this 1FL2 frame as a manufactured-to-order product — there is no standing shelf stock at the line level; volume production is scheduled against the BOM quantity confirmed in the RFQ, with availability lead-time and current pricing returned against the request rather than against a published catalogue price. Independent distribution paths supplement that schedule against allocation pressure, and the same genuine part crosses regions under different commercial terms depending on which authorised-channel origin it ships from — same part, different passport, with a warranty posture that follows the regional authorised issue rather than the Siemens factory warranty. If the BOM already pins a Siemens 1FL2102 or 1FL2104 size and you were eyeing the 1FL2105 as a second source against the same SINAMICS S200 firmware slot, the shaft height and connector family line up across the 1FL2 series — confirm the application profile and moment of inertia match against the drive's auto-tuning rather than trusting the framing alone, because the brake option and encoder resolution on the -1HB0 suffix differ from neighbouring build codes in this line.