Is the 1FL6066 still on the build sheet, or already in the NRND window?
The 1FL6066-1AC61-2LG1 sits inside the SIMOTICS S-1FL6 family, sized as a low-inertia servomotor for the SINAMICS V70 and V90 converter line — 1.75 kW rated power at 3AC 400 V, 2000 rpm nominal, 8.36 Nm continuous torque with 11 Nm peak, in a 65 mm shaft-height frame with an angle plug and absolute encoder (20-bit, 12-bit multi-turn) on a plain shaft, no holding brake, IP65 with sealing ring. The 8.36 Nm continuous figure at 2000 rpm is the rating that decides the mechanical fit — it lines up with mid-range positioning axes, small gantries, and feeder drives where the 1FL6 family was originally specified, not with high-inertia direct-drive loads. Lifecycle is flagged NRND on the manufacturer's record — meaning the part is no longer in active promotion but is still supportable, and last-time-buy windows apply. No official pin-compatible successor order code is published alongside this entry, so a board swap or mechanical re-fit is not on the table without verification against the current 1FL6 build.
What the IP65 sealing ring and 20-bit encoder buy you on the line
The plain shaft plus IP65 sealing ring combination is the configuration typically chosen where the coupling side lives near coolant mist or washdown, but where a brake is not required because the driven axis is held by the process itself (gravity-loaded, mechanically back-stopped, or held by the upstream gear train). The 20-bit absolute encoder (12-bit multi-turn) is the resolution floor the SINAMICS V70/V90 expects for commutation and positioning — substituting a motor with a lower multi-turn count will throw position-loss faults on power-cycle recovery, which is the failure mode most often mis-blamed on the drive rather than the motor.
Compliance paperwork the MRO file will ask for
Export control is AL:N / ECCN:N, so the part is not on a controlled-list restriction for cross-border shipment. Group Code R220 and Product Group 5183 are the internal classification keys for this line — R220 routes the part under Siemens' drive-systems motion-control hierarchy, and 5183 identifies the 1FL6 servomotor subset within it. Useful for matching the line against an internal BOM template rather than for selection.
Sourcing posture for an NRND motor on a live line
Because the line is NRND, the right sourcing move on a working line is to confirm remaining factory stock and any last-buy cut-off through Siemens, then hold a small buffer of matched motors against the spare-parts register — not to redesign the axis around a substitute without verifying the encoder count, brake option, and shaft detail against the current 1FL6 build sheet. No dealer stock count or shipment promise is asserted on this page.