Where this part sits on the milestone
The Siemens 1FK7042-5AF71-1FA0 is a synchronous servo motor from the 1FK7 compact family, ordered against an axis that needs precise torque control in a small to mid-power envelope — typically indexing tables, packaging converting lines, and small-format pick-and-place cells where the cabinet-side drive is a SINAMICS S120 or similar modular drive. The listed lifecycle stage is eol_hot: Siemens has withdrawn the 1FK7 generation from new orders, so the procurement route for fresh BOM positions is independent distribution rather than factory-direct — quoted per RFQ against the specific shaft, brake, and encoder code embedded in the order string.
What the 4.88 kg frame means on the install
Because the 1FK7 is a feedback-driven motor, the encoder variant and connector keying are baked into the order suffix; quoting against the BOM must mirror the existing axis nameplate exactly, or the drive-side parameter set and resolver/encoder commissioning routine will need to be re-loaded.