Motor identity and rated envelope
The Siemens 1FK7040-2AK7.-.... is a SIMOTICS S 1FK7-CT synchronous servo motor rated 0.69 kW at a 600 V DC link, with a standstill torque of 1.6 Nm (100 K) and a rated speed of 6000 rpm, naturally cooled. The 1FK7-CT compact frame slots into a converter-driven axis where the 600 V DC bus and 6000 rpm ceiling define the sizing envelope, and the natural-cooling (no external fan) configuration keeps the integration footprint to the motor body alone — important on tightly packed machine-tool or packaging axes where ducting is not practical.
Lifecycle read and what EOL means for the BOM line
For an EOL servo motor in this class, spares decisions sit between a like-for-like service replacement (matched frame size and winding so the drive parameter set is preserved) and a migration to a current SIMOTICS S successor — confirm the encoder type and brake option before committing either route, because the 1FK7-CT winding code is not always a direct drop-in.