Description
Product Description
The Siemens 1FT7042-5AK7X-1XXX is a high-performance SIMOTICS S-1FT7 permanent magnet synchronous servo motor engineered for high-speed, high-precision industrial motion control. Designed for seamless integration with Siemens SINAMICS S120 servo drive systems via the DRIVE-CLiQ interface, this naturally cooled servo motor delivers excellent dynamic response, high positioning accuracy, and reliable continuous-duty operation. It is ideal for CNC machine tools, robotics, semiconductor manufacturing, packaging machinery, electronics assembly, printing equipment, and other advanced automation systems.
Operating at a rated speed of 6,000 RPM, the 1FT7042-5AK7X-1XXX delivers 1.26 kW optimum output power, 2.0 Nm rated torque, and 3.0 Nm stall torque (100 K). The motor can produce up to 13 Nm maximum torque while supporting a maximum mechanical speed of 9,000 RPM, making it suitable for applications requiring rapid acceleration, smooth motion, and precise positioning. Its permanent magnet rotor design provides high efficiency, low rotor inertia, and excellent servo performance.
The 1FT7042-5AK7X-1XXX product family includes numerous MLFB variants with different encoder technologies, shaft configurations (plain shaft or fitted key), optional holding brakes, connector orientations, vibration grades, temperature sensor options (KTY or Pt1000), and IP protection ratings. All variants feature natural cooling, IM B5 flange mounting, integrated motor temperature monitoring, and DRIVE-CLiQ communication. The exact motor configuration is determined by the complete Siemens MLFB ordering code.
Key Features
- Genuine Siemens SIMOTICS S-1FT7 synchronous servo motor
- Permanent magnet synchronous motor technology
- Designed for Siemens SINAMICS S120 servo drive systems
- Optimum output power: 1.26 kW
- Rated speed: 6,000 RPM
- Rated torque: 2.0 Nm
- Stall torque (100 K): 3.0 Nm
- Maximum torque: 13 Nm
- Maximum mechanical speed: 9,000 RPM
- Natural cooling
- DRIVE-CLiQ digital encoder interface
- High torque density with low rotor inertia
- Incremental, single-turn absolute, and multiturn absolute encoder options
- Plain shaft or fitted key shaft versions
- Optional holding brake
- IM B5 flange mounting
- Rotatable power connector
- Integrated KTY or Pt1000 temperature sensor
- IP64 / IP65 / IP67 protection (variant dependent)
Technical Specifications
| Specification | Details |
|---|---|
| Product Family | SIMOTICS S-1FT7 |
| Part Number | 1FT7042-5AK7X-1XXX |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Cooling Method | Natural Cooling |
| Optimum Power | 1.26 kW |
| Rated Speed | 6,000 RPM |
| Optimum Speed | 6,000 RPM |
| Rated Torque (100 K) | 2.0 Nm |
| Stall Torque (100 K) | 3.0 Nm |
| Stall Torque (60 K) | 2.4 Nm |
| Maximum Torque | 13 Nm |
| Rated Current | 3.0 A |
| Stall Current (100 K) | 3.9 A |
| Stall Current (60 K) | 3.1 A |
| Maximum Current | 21 A |
| Maximum Mechanical Speed | 9,000 RPM |
| Maximum Converter Speed | 9,000 RPM |
| Number of Poles | 6 |
| Torque Constant | 0.765 Nm/A |
| Voltage Constant | 48.6 V/1000 RPM |
| Winding Resistance | 1.11 Ω |
| Rotating Field Inductance | 6.5 mH |
| Electrical Time Constant | 6 ms |
| Mechanical Time Constant | 1.6 ms |
| Thermal Time Constant | 20 min |
| Rotor Inertia | 2.81 × 10⁻⁴ kg·m² |
| Rotor Inertia (with Brake) | 3.68 × 10⁻⁴ kg·m² |
| Motor Weight | 4.6 kg |
| Motor Weight (with Brake) | 5.5 kg |
| 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 Flange |
| Protection Class | IP64 / IP65 / IP67 (variant dependent) |
| Temperature Monitoring | Integrated KTY / Pt1000 Sensor |
| Compatible Drives | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
Technical specifications may vary depending on the selected MLFB configuration, encoder type, shaft option, brake option, and protection class.
Applications
- CNC Machine Tools
- Industrial Robotics
- Electronics Assembly
- Semiconductor Manufacturing
- Packaging Machinery
- Printing Machinery
- Pick-and-Place Systems
- Laboratory Automation
- Textile Machinery
- High-Speed Precision Motion Control