SIMOTICS S-1FK7 servomotors

Permanent magnet stimulated synchronous motors, or SIMOTICS S-1FK7 motors, come in three different versions: compact, high dynamic, and high inertia. The motors are distinguished by their excellent overload capacity, resilience, and small size. A flexible, quick, and secure connection to the converter is ensured by the use of preassembled cables and rotatable connectors.

Servomotors for every motion task

When it comes to machine tool positioning, angular synchronism, cyclic drive, or route control, Siemens’ SIMOTICS servo motors offer excellent dynamics, precision, compactness, and durability.

  • High degree of efficiency and triple overload capability
  • Shock and vibration-resistant due to mechanically isolated encoder connection
  • Optionally with absolute encoder, incremental encoder or resolver
  • Easy to assemble and service due to rotatable connector with quick-release fastener and exchangeable encoder
  • Digital DRIVE-CLiQ interface with electronic rating plate for optimum connection to SINAMICS S120
  • Optionally with different gear types and backlash-free holding brake
  • Cooling methods: Natural cooling and forced ventilation


  • Packaging machines
  • Plastics and textile machines
  • Printing machines
  • Wood, glass, ceramics and stone working
  • Robots, handling systems and conveyor technology
  • Feed and auxiliary axes for machine tools

Overview of the product range

With our SIMOTICS S-1FK7 servomotors, you can choose between three inertial designs depending on the requirements for dynamics, control behavior, accuracy and space.

Compact (CT)

  •  The universal motor for a wide range of applications
  •  Space-saving installation through very high power density
  • Large range of motors in the shaft heights 20 to 100
  • Preferred types with short delivery times are available

High Dynamic (HD)

  • The sprinter in the ramp-up time
  • Very high acceleration capability due to low rotor moment of inertia
  • For highly dynamic applications with low load moment of inertia

High Inertia (HI)

  • Docile control behavior with superior load inertia due to the high intrinsic moment of inertia
  • Reduced expenditure for controller optimization
  • Particularly suited for machine tools for feed axis applications requiring superior resp. alternating load inertia

Technical overview

System overview of SIMOTICS S-1FK7 servo motors

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