Description
Product Description
The Siemens 1FT7102-5AB71-1BE5 is a SIMOTICS S-1FT7 permanent magnet synchronous servo motor designed for precision motion control and demanding industrial automation applications. Built for seamless integration with Siemens SINAMICS S120 drive systems, this motor delivers excellent positioning accuracy, high torque density, rapid acceleration, and reliable continuous-duty operation. It is ideally suited for CNC machine tools, industrial robotics, packaging machinery, printing equipment, material handling systems, textile machinery, and automated production lines.
Operating at a rated speed of 1,500 RPM, the motor provides 4.1 kW rated output power, 26 Nm rated torque, 30 Nm stall torque (100 K), and up to 120 Nm maximum torque. Its permanent magnet synchronous technology offers high efficiency, low rotor inertia, smooth operation, and exceptional dynamic response, ensuring superior performance in high-precision servo applications.
The 1FT7102-5AB71-1BE5 features natural cooling, IM B5 flange mounting, IP65 protection, a plain shaft, integrated Pt1000 temperature monitoring, and a high-resolution encoder for precise speed and position feedback. The 1BE5 suffix denotes a specific encoder and electrical interface configuration within the SIMOTICS S-1FT7 family while maintaining the same core motor performance. The exact encoder interface is defined by the complete Siemens MLFB ordering code.
Key Features
- Genuine Siemens SIMOTICS S-1FT7 synchronous servo motor
- Permanent magnet synchronous motor technology
- Natural cooling
- Rated output power: 4.1 kW
- Rated speed: 1,500 RPM
- Rated torque: 26 Nm
- Stall torque (100 K): 30 Nm
- Maximum torque: 120 Nm
- Maximum mechanical speed: 6,000 RPM
- High torque density with excellent dynamic response
- Plain shaft configuration
- IM B5 flange mounting
- IP65 enclosure protection
- Integrated Pt1000 temperature sensor
- High-resolution encoder
- Turnable SPEED-CONNECT power connector
- Optimized for Siemens SINAMICS S120 servo drive systems
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 1FT7102-5AB71-1BE5 |
| Product Family | SIMOTICS S-1FT7 |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Cooling Method | Natural Cooling |
| Rated Power | 4.1 kW |
| Rated Speed | 1,500 RPM |
| Rated Torque | 26 Nm |
| Stall Torque (100 K) | 30 Nm |
| Maximum Torque | 120 Nm |
| Rated Current | 8 A |
| Maximum Current | 45 A |
| Maximum Mechanical Speed | 6,000 RPM |
| Maximum Inverter Speed | 2,680 RPM |
| Number of Poles | 10 |
| Efficiency | 93% |
| Rotor Inertia | 91.4 kg·cm² |
| Shaft Type | Plain Shaft |
| Mounting Arrangement | IM B5 Flange |
| Protection Class | IP65 |
| Temperature Monitoring | Pt1000 Sensor |
| Encoder | High-Resolution Encoder* |
| Electrical Connection | Turnable SPEED-CONNECT Connector |
| Drive Compatibility | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
* Encoder interface, communication protocol, and feedback type are determined by the complete Siemens MLFB ordering code.
Applications
- CNC Machining Centers
- CNC Turning and Milling Machines
- Industrial Robotics
- Packaging Machinery
- Printing and Converting Equipment
- Material Handling Systems
- Automated Assembly Lines
- Semiconductor Manufacturing Equipment
- Textile Machinery
- Precision Motion Control Systems




