What 1 kW at 3000 rpm means on this shaft
The Siemens 1FL2104-4BF01-1MC0 is a SIMOTICS S-1FL2 low-inertia servomotor with 1 kW rated power at 3000 rpm and a standstill/continuous torque of 3.2 Nm on a 40 mm shaft height, sized for the dynamic positioning and short-cycle loads the 1FL2 family is built around. Supply voltage is 400 V three-phase, the standard drive bus on a SINAMICS S200 PN — the motor is specified as the matched partner for that drive family, so the encoder, connector and parameter set line up without a cross-family adapter.
Mechanical and connector details that decide the BOM line
The motor carries a keyed shaft (tolerance N), no holding brake, and a hybrid AM21bit encoder connector — the keyed shaft simplifies coupling alignment but rules out a drop-in swap with a smooth-shaft variant; the AM21bit connector is the encoder/data path, not a power connector, and must be ordered against the matching cable set. Protection class is IP65 with oil seal — sealed for cabinet-proximate machine mounting where coolants and cutting fluids are present, but not rated for full washdown submersion. The shaft height of 40 mm sits in the small-frame end of the 1FL2 line, so panel cutouts and coupling selection follow the SH40 envelope, not the larger SH60/80 variants.
Lifecycle, compliance, and how the part is sold
Lifecycle status is recorded as active and the unit is sold as a single piece — built to order rather than held as shelf stock, so production quantities are quoted per RFQ against the BOM and lead time is confirmed at quote.
Group and product codes for procurement traceability
Internal Siemens group code R220 and product group X0DK are the keys for matching the line item across the order, the delivery note, and the customs declaration — when the BOM freezes against a multi-line SINAMICS panel build, these codes confirm the motor pulled from stores is the one the engineering release called for.