Description
Product Description
The Siemens 1FT7102-5AB71-1BB0 is a SIMOTICS S-1FT7 permanent magnet synchronous servo motor designed for demanding motion control applications that require high precision, rapid acceleration, and reliable continuous operation. As part of Siemens' premium S-1FT7 servo motor family, it is optimized for use with SINAMICS S120 drive systems, making it ideal for CNC machine tools, industrial robotics, packaging equipment, printing machinery, and automated production systems.
With an optimum output power of 4.1 kW at 1,500 RPM, the motor delivers 26 Nm rated torque, 30 Nm stall torque (100 K), and up to 120 Nm maximum torque. The permanent magnet rotor provides excellent torque density, smooth operation, and precise speed and position control while maintaining high energy efficiency.
The motor features natural cooling, IM B5 flange mounting, IP65 protection, a plain shaft, an integrated Pt1000 temperature sensor, and a high-resolution encoder for accurate motion feedback. Its robust construction and compact design make it an excellent solution for high-performance industrial automation environments.
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 design
- IM B5 flange mounting
- IP65 enclosure protection
- Integrated Pt1000 temperature sensor
- High-resolution encoder feedback
- Compatible with Siemens SINAMICS S120 servo drives
Technical Specifications
| Specification | Details |
|---|---|
| Part Number | 1FT7102-5AB71-1BB0 |
| 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 |
| Pole Count | 10 |
| Efficiency | 93% |
| Shaft Type | Plain Shaft |
| Mounting | IM B5 Flange |
| Protection Class | IP65 |
| Temperature Sensor | Pt1000 |
| Encoder | High-Resolution Encoder* |
| Drive Compatibility | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
* Encoder variant depends on the complete Siemens MLFB configuration.
Applications
- CNC Machining Centers
- CNC Lathes
- Industrial Robotics
- Packaging Machines
- Printing & Converting Equipment
- Material Handling Systems
- Assembly Automation
- Textile Machinery
- Semiconductor Equipment
- High-Precision Motion Control




