Description
Product Description
The Siemens 1FT7044-5AF7X-1XXX is part of the SIMOTICS S-1FT7 family of permanent magnet synchronous servo motors, designed for high-performance motion control applications requiring exceptional positioning accuracy, high dynamic response, and reliable continuous operation. Optimized for seamless integration with Siemens SINAMICS S120 servo drive systems, this motor is ideal for CNC machine tools, robotics, packaging equipment, semiconductor manufacturing, printing machinery, and automated production systems.
Operating at a rated speed of 3,000 RPM, the 1FT7044-5AF7X-1XXX delivers 1.35 kW rated output power, 4.3 Nm rated torque, and 5.0 Nm stall torque (100 K). The motor provides 23 Nm maximum torque and supports maximum mechanical speeds up to 9,000 RPM, ensuring rapid acceleration, smooth operation, and precise speed regulation. The permanent magnet rotor design offers high efficiency, low rotor inertia, and excellent overload capability.
The 1FT7044-5AF7X-1XXX family includes numerous MLFB variants with different encoder technologies, shaft configurations (plain shaft or fitted key), optional holding brakes, connector orientations, vibration grades, and protection classes. All models feature natural cooling, IM B5 flange mounting, DRIVE-CLiQ communication, and an integrated Pt1000 temperature sensor. The exact configuration depends on the complete Siemens MLFB ordering code.
Key Features
- Genuine Siemens SIMOTICS S-1FT7 synchronous servo motor
- Permanent magnet synchronous motor technology
- Optimized for Siemens SINAMICS S120 servo drive systems
- Rated output power: 1.35 kW
- Rated speed: 3,000 RPM
- Rated torque: 4.3 Nm
- Stall torque (100 K): 5.0 Nm
- Maximum torque: 23 Nm
- Maximum mechanical speed: 9,000 RPM
- Up to 92% efficiency
- Natural cooling
- DRIVE-CLiQ encoder interface
- Incremental, single-turn absolute, and multiturn absolute encoder options
- Plain shaft or fitted key shaft options
- Optional permanent-magnet holding brake
- IM B5 flange mounting
- Rotatable power connector
- Integrated Pt1000 temperature sensor
- IP64 / IP65 / IP67 protection (variant dependent)
Technical Specifications
| Specification | Details |
|---|---|
| Product Family | SIMOTICS S-1FT7 |
| Series | 1FT7044-5AF7X-1XXX |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Cooling Method | Natural Cooling |
| Rated Power | 1.35 kW |
| Rated Speed | 3,000 RPM |
| Rated Torque | 4.3 Nm |
| Stall Torque (100 K) | 5.0 Nm |
| Maximum Torque | 23 Nm |
| Rated Current | 2.6 A |
| Stall Current (100 K) | 2.8 A |
| Maximum Current | 16 A |
| Maximum Mechanical Speed | 9,000 RPM |
| Maximum Inverter Speed | 5,200 RPM |
| Number of Poles | 6 |
| Efficiency | 92% |
| Torque Constant | 1.74 Nm/A |
| Voltage Constant | 110.5 V/1000 RPM |
| Winding Resistance | 2.35 Ω |
| Rotor Inertia | 5.43 × 10⁻⁴ kg·m² (6.30 × 10⁻⁴ kg·m² with brake) |
| Encoder Interface | DRIVE-CLiQ |
| Encoder Options | Incremental, Single-turn Absolute, Multiturn Absolute |
| Shaft Options | Plain Shaft or Fitted Key |
| Holding Brake | Optional |
| Mounting Arrangement | IM B5 |
| Protection Class | IP64 / IP65 / IP67 (variant dependent) |
| Temperature Monitoring | Integrated Pt1000 Sensor |
| Compatible Drives | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
Technical specifications may vary depending on the selected MLFB configuration.
Applications
- CNC Machine Tools
- Industrial Robotics
- Packaging Machinery
- Semiconductor Equipment
- Printing Machines
- Electronics Assembly
- Pick-and-Place Systems
- Textile Machinery
- Automated Production Lines
- Precision Motion Control Systems




