Description
Product Description
The Siemens 1FT7108-5SF7X-1XXX is a premium SIMOTICS S-1FT7 permanent magnet synchronous servo motor designed for demanding industrial motion control applications requiring high torque, exceptional positioning accuracy, and continuous-duty performance. Engineered for seamless integration with Siemens SINAMICS S120 servo drive systems through the DRIVE-CLiQ interface, this forced-ventilated servo motor delivers excellent dynamic response, high overload capacity, and superior efficiency for CNC machine tools, industrial robotics, rotary tables, metalworking machinery, packaging systems, and automated production lines.
Operating at a rated speed of 3,000 RPM, the 1FT7108-5SF7X-1XXX delivers an optimum output power of 18.8 kW, 60 Nm rated torque (100 K), and 91 Nm stall torque (100 K). The motor is capable of producing up to 280 Nm maximum torque while supporting a maximum mechanical speed of 6,000 RPM, making it ideal for applications requiring rapid acceleration, high precision, and reliable continuous operation. Forced ventilation provides efficient cooling for demanding industrial environments.
The 1FT7108-5SF7X-1XXX family is available in multiple MLFB configurations with different encoder technologies, shaft options (plain shaft or fitted key), optional permanent-magnet holding brakes, connector orientations, vibration grades, and IP protection classes. All variants feature IM B5 recessed flange mounting, integrated Pt1000 temperature monitoring, and DRIVE-CLiQ communication for simplified commissioning and diagnostics.
Key Features
- Genuine Siemens SIMOTICS S-1FT7 synchronous servo motor
- Permanent magnet synchronous motor technology
- Optimized for Siemens SINAMICS S120 servo drive systems
- Forced ventilation cooling
- Optimum output power: 18.8 kW
- Rated speed: 3,000 RPM
- Rated torque: 60 Nm
- Stall torque (100 K): 91 Nm
- Maximum torque: 280 Nm
- Maximum mechanical speed: 6,000 RPM
- High efficiency (93%)
- DRIVE-CLiQ digital encoder interface
- High torque density with excellent dynamic response
- Incremental, single-turn absolute, and multiturn absolute encoder options
- Plain shaft or fitted key shaft versions
- Optional permanent-magnet holding brake
- IM B5 recessed flange mounting
- Integrated Pt1000 temperature sensor
- IP64 / IP65 protection (variant dependent)
Technical Specifications
| Specification | Details |
|---|---|
| Product Family | SIMOTICS S-1FT7 |
| Part Number | 1FT7108-5SF7X-1XXX |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Cooling Method | Forced Ventilation |
| Optimum Output Power | 18.8 kW |
| Rated Speed | 3,000 RPM |
| Rated Torque (100 K) | 60 Nm |
| Rated Current | 38 A |
| Stall Torque (60 K) | 74 Nm |
| Stall Torque (100 K) | 91 Nm |
| Stall Current (60 K) | 46 A |
| Stall Current (100 K) | 57 A |
| Maximum Torque | 280 Nm |
| Maximum Current | 205 A |
| Maximum Mechanical Speed | 6,000 RPM |
| Maximum Converter Speed | 5,600 RPM |
| Rated Converter Current | 60 A |
| Maximum Converter Current | 113 A |
| Maximum Converter Torque | 177 Nm |
| Number of Poles | 10 |
| Efficiency | 93% |
| Torque Constant | 1.60 Nm/A |
| Voltage Constant | 101.5 V/1000 RPM |
| Winding Resistance | 0.04 Ω |
| Rotating Field Inductance | 1.1 mH |
| Electrical Time Constant | 26 ms |
| Mechanical Time Constant | 1.3 ms |
| Thermal Time Constant | 60 min |
| Rotor Moment of Inertia | 276 × 10⁻⁴ kg·m² (configuration dependent) |
| Motor Weight | Approx. 70 kg |
| Encoder Interface | DRIVE-CLiQ |
| Encoder Options | Incremental, Single-turn Absolute, Multiturn Absolute |
| Shaft Options | Plain Shaft or Fitted Key |
| Holding Brake | Optional Permanent-Magnet Brake |
| Mounting Arrangement | IM B5 Recessed Flange |
| Temperature Monitoring | Integrated Pt1000 Temperature Sensor |
| Protection Class | IP64 / IP65 (variant dependent) |
| Compatible Drives | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
Technical specifications may vary depending on the selected encoder, shaft configuration, holding brake, connector orientation, and complete Siemens MLFB ordering code.
Applications
- CNC Machine Tools
- Industrial Robotics
- Rotary Tables
- Metal Processing Machinery
- Packaging Machinery
- Printing Equipment
- Material Handling Systems
- Semiconductor Manufacturing
- Automated Production Lines
- High-Precision Motion Control