Headline rating and what it commits to
The 1FK2104-4AK00-0MB0 is a SIMOTICS S-1FK2 HD servomotor from the family built for SINAMICS S120 drive systems, with a stall torque of M0 = 1.27 Nm and a rated power of PN = 0.6 kW at nN = 6000 rpm when fed from a 380-480 V bus, or PN = 0.4 kW at nN = 3000 rpm from a 200-240 V bus. That dual voltage rating is the working envelope a controls integrator sizes against — the same motor frame covers a 200-240 V cabinet (PN = 0.4 kW) and a 380-480 V cabinet (PN = 0.6 kW), so the BOM line is the same regardless of which line-voltage cabinet the machine ships into, as long as the SINAMICS S120 line module matches.
Feedback and how it sits on the drive
Feedback is an absolute encoder AM22DQC, 22-bit singleturn plus 12-bit multiturn, returning over the DRIVE-CLiQ plug M17 — the same digital feedback chain the SINAMICS S120 auto-configures on first connection, so encoder commissioning is reduced to parameter set selection rather than mechanical alignment of a resolver. Power exits through a size M17 power connector, matching the rest of the 1FK2 cable set; the DRIVE-CLiQ signal line carries position, temperature and electronic nameplate data, which the drive uses to size the current loop and pre-load the motor model without manual entry.
Mechanical envelope on the machine
The mechanical side is a cylindrical shaft D19 x 40 mm with IP64 sealing on the body — IP64 resists splash and dust ingress, which covers general industrial mounting but not direct washdown; if the line is food-and-bev or outdoor exposed, step up to an IP65 variant rather than rely on the IP64 rating here.
Compliance, lifecycle, and what product class C means
The motor is listed as current (active) under brand Siemens, with compliance to the RoHS substance restrictions since 01-07-06 and REACH Art. 33 duty-to-inform flagged in the record — the documentation the compliance buyer asks for is on the official file, no separate request needed. The product class is C: products manufactured to order that cannot be reused or returned against credit, which means each unit is built against the configuration code and stocked quantities are lot-specific; planning needs to align the BOM freeze with the build cycle rather than expect off-the-shelf pull from a finished-goods warehouse.
Ordering metadata for the BOM line
Group code R220 and product group 9021 are the internal classification keys the Siemens configurator uses to seat this motor against the correct SINAMICS S120 line-module family, and the quantity unit is 1 piece — pack quantity 1, export control AL:N / ECCN:N_CNDU, so no special export licence applies for typical industrial destinations.