Description
Product Description
The Siemens 1FT7102-5AB71-1BE2 is a SIMOTICS S-1FT7 permanent magnet synchronous servo motor engineered for precision motion control and high-performance industrial automation. Designed for seamless integration with Siemens SINAMICS S120 drive systems, this servo motor delivers excellent positioning accuracy, high torque density, rapid acceleration, and dependable continuous-duty operation. It is ideal for CNC machine tools, robotics, packaging machinery, material handling systems, printing equipment, 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 ensures high efficiency, low rotor inertia, excellent overload capability, and outstanding dynamic response, making it suitable for demanding servo applications.
The 1FT7102-5AB71-1BE2 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 1BE2 suffix identifies a specific encoder and electrical connection configuration within the SIMOTICS S-1FT7 family while maintaining the same core mechanical and electrical performance. The exact encoder interface is determined by the complete Siemens MLFB configuration.
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 and excellent dynamic performance
- 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 | 1FT7102-5AB71-1BE2 |
| 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 and communication protocol are defined by the complete Siemens MLFB ordering code.
Applications
- CNC Machining Centers
- CNC Lathes 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




