Description
Product Description
The Siemens 1FT7108-5AF7X-1XXX is a high-performance SIMOTICS S-1FT7 permanent magnet synchronous servo motor designed for demanding industrial motion control applications requiring exceptional torque density, precision positioning, and dynamic response. Engineered for seamless integration with Siemens SINAMICS S120 servo drive systems via the DRIVE-CLiQ interface, this naturally cooled servo motor is ideal for CNC machine tools, robotics, packaging machinery, printing equipment, material handling systems, and other high-performance automation applications. It combines robust construction, high overload capability, and advanced encoder technology for reliable continuous-duty operation.
Operating at a rated speed of 3,000 RPM, the 1FT7108-5AF7X-1XXX delivers 6.28 kW rated output power, 20 Nm rated torque (100 K), and 70 Nm stall torque (100 K). The motor provides up to 150 Nm recommended maximum torque and 280 Nm peak torque, while supporting a maximum mechanical speed of 6,000 RPM. Its permanent magnet rotor design ensures high efficiency, low inertia, and outstanding servo performance for demanding positioning and speed control applications.
The 1FT7108-5AF7X-1XXX family includes numerous MLFB variants with different encoder systems, shaft versions (plain shaft or fitted key), optional holding brakes, connector orientations, vibration grades, and protection ratings. All variants feature natural cooling, IM B5 flange mounting, integrated temperature monitoring, and DRIVE-CLiQ communication. The exact motor configuration depends on the complete Siemens MLFB ordering code.
Key Features
- Genuine Siemens SIMOTICS S-1FT7 synchronous servo motor
- Permanent magnet synchronous motor technology
- Designed for Siemens SINAMICS S120 servo drive systems
- Rated output power: 6.28 kW
- Rated speed: 3,000 RPM
- Rated torque: 20 Nm
- Stall torque (100 K): 70 Nm
- Recommended maximum torque: 150 Nm
- Peak maximum torque: 280 Nm
- Maximum mechanical speed: 6,000 RPM
- High efficiency (93%)
- Natural cooling
- DRIVE-CLiQ digital encoder interface
- Incremental, single-turn absolute, and multiturn absolute encoder options
- Plain shaft or fitted key shaft configurations
- Optional holding brake
- IM B5 flange mounting
- Rotatable power connector
- Integrated Pt1000/KTY temperature monitoring
- IP64 / IP65 protection (variant dependent)
Technical Specifications
| Specification | Details |
|---|---|
| Product Family | SIMOTICS S-1FT7 |
| Part Number | 1FT7108-5AF7X-1XXX |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Cooling Method | Natural Cooling |
| Rated Power | 6.28 kW |
| Rated Speed | 3,000 RPM |
| Rated Torque | 20 Nm |
| Stall Torque (100 K) | 70 Nm |
| Rated Current | 12 A |
| Stall Current (100 K) | 36 A |
| Recommended Inverter Current | 45 A |
| Maximum Inverter Current | 85 A |
| Recommended Maximum Torque | 150 Nm |
| Peak Maximum Torque | 280 Nm |
| Maximum Current | 165 A |
| Maximum Mechanical Speed | 6,000 RPM |
| Maximum Inverter Speed | 4,500 RPM |
| Number of Poles | 10 |
| Efficiency | 93% |
| Torque Constant | 1.94 Nm/A |
| Voltage Constant | 127 V/1000 RPM |
| Winding Resistance | 0.07 Ω |
| Rotating Field Inductance | 1.7 mH |
| Electrical Time Constant | 26 ms |
| Mechanical Time Constant | 1.3 ms |
| Thermal Time Constant | 95 min |
| Rotor Inertia | 276 × 10⁻⁴ kg·m² (variant dependent) |
| Encoder Interface | DRIVE-CLiQ |
| Encoder Options | Incremental, Single-turn Absolute, Multiturn Absolute |
| Shaft Options | Plain Shaft or Fitted Key |
| Holding Brake | Optional |
| Mounting Arrangement | IM B5 Flange |
| Protection Class | IP64 / IP65 (variant dependent) |
| Temperature Monitoring | Pt1000 / KTY Sensor (variant dependent) |
| Compatible Drives | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
Technical specifications may vary depending on the selected MLFB configuration, encoder, shaft type, and brake option.
Applications
- CNC Machine Tools
- Industrial Robotics
- Packaging Machinery
- Printing Machinery
- Material Handling Systems
- Semiconductor Manufacturing
- Automated Assembly Lines
- Metalworking Equipment
- High-Speed Production Systems
- Precision Motion Control Applications