Description
Product Description
The Siemens 1FT7102-5AB71-1BD3 is a SIMOTICS S-1FT7 permanent magnet synchronous servo motor designed for demanding industrial motion control applications that require exceptional precision, high torque density, and reliable continuous operation. Optimized for use with Siemens SINAMICS S120 servo drive systems, this motor is ideal for CNC machining centers, industrial robots, packaging equipment, material handling systems, printing machinery, and automated manufacturing lines. It delivers smooth operation, rapid acceleration, and precise positioning across a wide speed range.
With an optimum output power of 4.1 kW at a rated speed of 1,500 RPM, the motor produces 26 Nm rated torque, 30 Nm stall torque (100 K), and up to 120 Nm maximum torque. The permanent magnet rotor provides excellent efficiency, low rotor inertia, and outstanding dynamic response, making it suitable for high-performance servo applications.
The 1FT7102-5AB71-1BD3 features natural cooling, IM B5 flange mounting, IP65 protection, a plain shaft, integrated Pt1000 temperature monitoring, and a high-resolution encoder for accurate speed and position feedback. The 1BD3 suffix identifies a specific encoder and electrical connection configuration within the SIMOTICS S-1FT7 series while maintaining the same mechanical performance characteristics. Final encoder specifications depend on 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 with low rotor inertia
- Plain shaft configuration
- IM B5 flange mounting
- IP65 enclosure protection
- Integrated Pt1000 temperature sensor
- High-resolution encoder feedback
- Turnable SPEED-CONNECT power connector
- Optimized for Siemens SINAMICS S120 drive systems
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 1FT7102-5AB71-1BD3 |
| 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 Sensor | Pt1000 |
| Encoder | High-Resolution Encoder* |
| Electrical Connection | Turnable SPEED-CONNECT Connector |
| Drive Compatibility | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
* Encoder version and electrical connection 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
- Textile Machinery
- Semiconductor Manufacturing Equipment
- Precision Motion Control Systems




