1.9 kW, 11 Nm standstill, 2000 rpm — what the rating means
The 1FK7063-2AC7.-....: The Siemens SIMOTICS S 1FK7-CT is a synchronous servo motor rated 1.9 kW with a standstill torque of 11 Nm (100 K) and a rated speed of 2000 rpm, fed from a 600 V DC link. The standstill torque figure is the load the shaft can hold at zero rpm with the winding at the 100 K temperature rise — the figure that sizes the holding capability for a vertical axis or a clamp, not the continuous-running figure. Naturally cooled means there is no integrated fan — the motor relies on the machine frame for heat rejection, which suits enclosed machine cabinets where forced airflow would be redundant. On a continuously loaded axis, the absence of a fan is the first place to look when sizing the thermal envelope, because the rated torque holds only while the frame stays below the 100 K rise.
Lifecycle is EOL hot — what that means for the BOM line
The lifecycle stage for this order code is recorded as eol_hot, meaning the part is in the final active supply window before the manufacturer withdraws it. For a service or build line that already has 1FK7-CT drives, encoder cables and drive firmware keyed to this motor family, the practical question is not the next order but how much to stock while the channel is still open — last-time-buy logic applies whether the official end-of-production date is named or not. Independent distribution is the realistic supply lane at this point in the lifecycle, with availability, condition (factory-sealed surplus versus refurbished) and quantity bracketed per line item at RFQ. The cross-border paperwork has to be clean — a motor at 1.9 kW into a free-zone consignment or a DDP shipment needs accurate HS classification and a country-of-origin statement the customs broker can defend, so the landed cost calculation has to run before the RFQ rather than after.
Integrator notes for panel and drive pairing
On a SINAMICS S120 or similar 600 V DC-link drive, the 1FK7063-2AC7.-.... pairs as a naturally cooled high-dynamic synchronous motor — the resolver or absolute encoder option that follows the dash in the order code is the choice that matters at commissioning, not at order placement, because the drive auto-detects the encoder via the DRIVE-CLiQ or analogue interface once the motor is wired in. For panel layout, plan a 1FK7 frame-63 footprint with cable entry on the A-side or B-side per the order code suffix — the mechanical variant and brake option are encoded in the dash fields, so the cable gland sizing on the cabinet side has to match the motor connector before the panel build starts. PE bonding to the cabinet ground bar is mandatory; the motor frame carries any drive-side bearing current back to ground.
Sourcing posture — quoted to order, clean paperwork to the dock
For a capex build, treat the order quantity as the entire remaining need for the build window — the eol_hot lifecycle stage does not promise a second chance at the same lead time once this window closes.