Read the part on the nameplate
The Siemens 1FK7042-2AC7.-.... is a SIMOTICS S 1FK7-CT synchronous servo motor rated PN=0.59 kW with a 600 V DC link, M0=3 Nm at 100 K, NN=2000 rpm, naturally cooled — a compact low-inertia servo in the legacy 1FK7 family that pairs with a SINAMICS drive on PROFINET. The 0.59 kW / 3 Nm figure is the continuous sizing anchor; 100 K thermal utilization leaves headroom for short acceleration peaks before the winding thermal limit kicks in, and 2000 rpm sets the base speed where constant-torque gives way to the field-weakening range.
Lifecycle is the line that matters here
Lifecycle stage is recorded as eol_hot — the part is past the active-production window and has moved into the phase where orders run through last-time-buy and surplus channels, so any new build needs to lock the BOM line and verify remaining stock before committing. With the original line wound down, the practical replacement path is the next-generation SIMOTICS S-1FK7 successor with the same shaft and flange footprint, but the pin map and encoder default differ — confirm electrical compatibility against the SINAMICS drive parameter set before substituting.
Sourcing posture for an EOL servo
Quoted to order against the BOM through independent distribution; lead time, condition (factory-sealed surplus vs refurbished), and volume pricing are confirmed at RFQ rather than held as standing stock. For a line-down spare on a machine already running 1FK7 hardware, the correct route is to pin the encoder variant (resolver vs absolute) and the brake option from the existing nameplate, then order against that exact MPN rather than a generic family code.