Description
Product Description
The Siemens 1FT7102-5AB71-1BD4 is a high-performance SIMOTICS S-1FT7 permanent magnet synchronous servo motor designed for precision motion control applications that demand high torque, exceptional positioning accuracy, and outstanding dynamic performance. Engineered for seamless integration with Siemens SINAMICS S120 drive systems, this servo motor is ideally suited for CNC machine tools, robotics, packaging machinery, printing equipment, material handling systems, and automated production lines. It delivers reliable, energy-efficient performance for continuous industrial operation.
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 rotor technology ensures excellent efficiency, low rotor inertia, rapid acceleration, and highly accurate speed and position control for demanding automation applications.
The 1FT7102-5AB71-1BD4 features natural cooling, IM B5 flange mounting, IP65 enclosure protection, a plain shaft, integrated Pt1000 temperature monitoring, and a high-resolution encoder for precise feedback. The 1BD4 suffix identifies a specific encoder and connection configuration within the SIMOTICS S-1FT7 series while maintaining identical mechanical and electrical performance characteristics. Final encoder specifications depend on 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 low rotor inertia
- Plain shaft configuration
- IM B5 flange mounting
- IP65 protection class
- 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 | 1FT7102-5AB71-1BD4 |
| 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 version and electrical interface are determined by the complete Siemens MLFB configuration.
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
- Textile Machinery
- High-Precision Motion Control Systems




