What this motor is and where it drops in
The 1FK7103-5AF71-1... is a SIMOTICS S 1FK7 Compact synchronous servo motor — 36 Nm continuous torque at 100 K, 3000 rpm rated speed, and 4.40 kW shaft power on natural convection, so no fan or blower is needed on the machine frame. Mounting is IM B5 with IM V1 and IM V3 variants covered by the same code, and the power/signal connector rotates 270° to clear adjacent cable trays on retrofits — a real-world help when an existing SINAMICS drive cabinet dictates the cable exit direction rather than the motor's.
How the part is specified and quoted
Because the 1FK7103-5AF71-1... is built to pair with a SINAMICS S120 drive module on the 1FK7 Compact shaft height, the right BOM-line check before specifying is the drive firmware version, encoder type, and connector orientation on the existing axis — a mismatch on any of those three is what turns a service swap into a commissioning day.