SIEMENS 1FK7083-2AF71-1EH0 Simotics S synchronous servo motor

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The 1FK7083-2AF71-1EH0 from Siemens is a compact SIMOTICS S 1FK7 synchronous AC servo motor designed for CNC feed axes and high-precision positioning applications. When used with SINAMICS S120 drives and SINUMERIK control systems, it delivers accurate torque control, fast dynamic response, and stable closed-loop positioning for demanding industrial applications.

This motor is commonly installed on machining centers, CNC lathes, indexing tables, handling systems, and other automation equipment requiring precise linear or rotary motion. The low-inertia design of the 1FK7 series supports excellent speed regulation and contour accuracy, helping maintain machining quality and repeatability during complex multi-axis operations.

Rated at 3.3 kW, the motor provides a standstill torque of 16 Nm and a nominal speed of 3000 rpm. It is naturally cooled and built in IM B5 (IM V1, IM V3) flange-mounted configuration, making it suitable for continuous industrial operation while maintaining a compact installation footprint.

The motor is equipped with an absolute EnDat encoder AM2048 S/R featuring 2048 signal periods and 4096-turn multiturn capability, ensuring precise position feedback and reliable axis referencing. A KTY temperature sensor is integrated for thermal monitoring, while the built-in holding brake provides secure axis retention when power is removed. The rotatable power connector simplifies installation and service access in confined machine spaces.

With an IP64 protection rating, the motor is designed to operate reliably in machine-tool environments where coolant mist, chips, and vibration are present, provided standard machine guarding is maintained. The factory-coded reference 1FK7083-2AF71-1EH0 defines the exact mechanical, electrical, feedback, and brake configuration, making it essential to match the complete part number when replacing an existing motor.

Manufactured in Germany, this servo motor is widely used as a replacement unit, retrofit component, or maintenance spare for CNC systems already equipped with SIEMENS servo technology. Its robust construction, precise feedback system, and compatibility with the SIEMENS drive ecosystem make it a dependable solution for restoring machine performance, minimizing downtime, and extending the service life of production equipment.

Frequently asked questions about 1FK7083-2AF71-1EH0:

Is it compatible with SINAMICS S120 and SINUMERIK controls?
Yes, the 1FK7 series is widely used with SINAMICS S120 and SINUMERIK-based machines. Match the full motor code to your drive rating and feedback option for a direct replacement.

What encoder type is supplied on this code?
The encoder option is defined by the build code. For a drop-in swap, verify the exact code on your current motor nameplate to ensure the same feedback specification.

Does this version include a holding brake?
Brake presence and torque are code-specific. Check the existing motor code and data plate details to confirm whether a brake is included and match accordingly.

What should be confirmed before ordering as a replacement unit?
Confirm the full code, drive pairing, rated speed and torque class, mechanical flange and shaft style, and cable connector orientation. Ordering the identical code ensures a true drop-in replacement with minimal setup changes.

Can this motor be supplied as a refurbished unit?
Depending on inventory, refurbished units and surplus stock may be available. These are supplied as a tested unit suitable for field replacement to restore machine uptime.