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Siemens SIMOTICS S 1FT5 Series – Synchronous servomotors for precision industrial applications
The Siemens SIMOTICS S 1FT5 series represents a well-established generation of synchronous servomotors that have been used for years in the European industrial automation sector. Valued for their positioning accuracy, robust construction and dynamic stability, 1FT5 motors have been widely deployed in CNC machine tools, automated lines, multi-axis systems and industrial robotics solutions.
Compatible with Siemens SIMODRIVE 611 drives, 1FT5 motors are still installed in numerous production plants today, particularly in older but strategic machines, making the availability of certified maintenance services essential.
Roots included in the SIMOTICS S 1FT5 series
The 1FT5 family includes several configurations, identified by the following Siemens roots:
👉 1FT5036 – 1FT5044 – 1FT5046 – 1FT5064 – 1FT5066 – 1FT5072
Each root differs in torque, power, inertia, motor length and mechanical options, ensuring broad adaptability to the industrial machines of their reference period.
⚙️ Main technical features ⚙️
1️⃣ Synchronous technology with permanent magnets
1FT5 motors offer:
• High torque stability
• Excellent dynamic response
• Reliable performance even with variable loads
• Superior mechanical robustness
These characteristics made them one of the most widely used series in the first generations of Siemens motion control.
2️⃣ Precision and axis control
When paired with dedicated Siemens encoders, 1FT5 motors ensure:
• Precise positioning
• Reduced tracking errors
• Stable long-term repeatability
A fundamental element in CNC machining and complex synchronous systems.
3️⃣ Integration with SIMODRIVE 611
The 1FT5 series is perfectly integrated with 👉 SIMODRIVE 611 drives, particularly within the control modules of that era:
• Stable and responsive regulation
• Compatibility with dedicated power modules
• Immediate communication between drive and motor
Despite obsolescence, many production lines still operate with these architectures, making specialized maintenance support strategically important.
🏭 Typical applications 🏭
SIMOTICS S 1FT5 motors are used in:
• First-generation CNC machine tools
• Automated lines and transfer systems
• Automation systems with interpolated axes
• Industrial robotics and manipulators
• Assembly systems
• Applications with moderate dynamic cycles
Their reliability made them a historic choice for many Siemens machine platforms.
⚠️ Production status and operational criticalities ⚠️
The 1FT5 series is fully discontinued and has been replaced in new machines by more modern families (1FT6, 1FK7, 1FT7).
The main issues identified on 1FT5 motors include:
• Mechanical noise and vibration due to worn bearings
• Axis drift or loss of precision
• Overheating
• Encoder faults
• Torque reduction
• Instability on the SIMODRIVE drive side
The difficulty in sourcing new motors makes professional regeneration essential.
♻️ E-Repair services for the Siemens 1FT5 series 🔧♻️
E-Repair, the only Approved Partner Siemens Industry Services in Europe, performs complete interventions on all 1FT5 motors.
E-Repair also manages associated encoders and can supply, when available, regenerated 1FT5 motors ready for installation.
Interventions can be integrated into the 👉 MAAS – Maintenance as a Service program to ensure production continuity and reduced downtime.
🧩 Conclusion 🧩
Although the Siemens SIMOTICS S 1FT5 series is now discontinued, these motors remain essential in many European plants still in operation. Thanks to certified E-Repair services, it is possible to extend their lifecycle, preserve the productivity of existing lines and ensure highly professional interventions in line with circular economy principles.
🟢 Content Page article for the technical mapping of product roots within the SIMOTICS S 1FT5 series range.
