Description
Product Description
The Siemens 1FT7086-5SH7X-1XXX is a high-performance SIMOTICS S-1FT7 permanent magnet synchronous servo motor engineered for precision motion control and demanding industrial automation applications. Designed for seamless integration with Siemens SINAMICS S120 servo drive systems through the DRIVE-CLiQ interface, this forced-ventilated servo motor provides exceptional torque density, fast dynamic response, and reliable continuous-duty operation. It is ideally suited for CNC machining centers, industrial robotics, packaging machinery, printing equipment, rotary tables, material handling systems, and automated manufacturing lines.
Operating at a rated speed of 4,500 RPM, the 1FT7086-5SH7X-1XXX delivers an optimum output power of 11.8 kW, 25 Nm rated torque (100 K), and 36 Nm stall torque (100 K). The motor is capable of producing up to 120 Nm maximum torque while supporting a maximum mechanical speed of 8,000 RPM, providing excellent acceleration, positioning accuracy, and sustained performance under demanding operating conditions.
The 1FT7086-5SH7X-1XXX product family is available in multiple MLFB configurations with various encoder technologies, shaft options (plain shaft or fitted key), optional permanent-magnet holding brakes, connector orientations, vibration grades, and protection classes. All variants feature IM B5 flange mounting, integrated temperature monitoring, and DRIVE-CLiQ communication for simplified commissioning and advanced diagnostics.
Key Features
- Genuine Siemens SIMOTICS S-1FT7 synchronous servo motor
- Permanent magnet synchronous motor technology
- Designed for Siemens SINAMICS S120 servo drive systems
- Forced ventilation cooling
- Optimum output power: 11.8 kW
- Rated speed: 4,500 RPM
- Rated torque: 25 Nm
- Stall torque (100 K): 36 Nm
- Maximum torque: 120 Nm
- Maximum mechanical speed: 8,000 RPM
- DRIVE-CLiQ digital encoder interface
- High torque density and excellent dynamic response
- Incremental, single-turn absolute, and multiturn absolute encoder options
- Plain shaft or fitted key shaft versions
- Optional permanent-magnet holding brake
- IM B5 flange mounting
- Integrated temperature monitoring
- IP64 / IP65 / IP67 protection (configuration dependent)
Technical Specifications
| Specification | Details |
|---|---|
| Product Family | SIMOTICS S-1FT7 |
| Part Number | 1FT7086-5SH7X-1XXX |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Cooling Method | Forced Ventilation |
| Optimum Output Power | 11.8 kW |
| Rated Speed | 4,500 RPM |
| Optimum Speed | 4,500 RPM |
| Rated Torque (100 K) | 25 Nm |
| Stall Torque (100 K) | 36 Nm |
| Stall Torque (60 K) | 30 Nm |
| Maximum Torque | 120 Nm |
| Rated Current | 25 A |
| Stall Current (100 K) | 34 A |
| Stall Current (60 K) | 28 A |
| Maximum Current | 131 A |
| Maximum Mechanical Speed | 8,000 RPM |
| Maximum Converter Speed | 8,000 RPM |
| Number of Poles | 10 |
| Torque Constant | 1.05 Nm/A |
| Voltage Constant | 67 V/1000 RPM |
| Winding Resistance | 0.08 Ω |
| Rotating Field Inductance | 1.4 mH |
| Electrical Time Constant | 18 ms |
| Mechanical Time Constant | 1.4 ms |
| Thermal Time Constant | 40 min |
| Rotor Moment of Inertia | 64 × 10⁻⁴ kg·m² |
| Rotor Inertia (with Brake) | 79 × 10⁻⁴ kg·m² |
| Motor Weight | 36 kg |
| Motor Weight (with Brake) | 32 kg |
| Encoder Interface | DRIVE-CLiQ |
| Encoder Options | Incremental, Single-turn Absolute, Multiturn Absolute |
| Shaft Options | Plain Shaft or Fitted Key |
| Holding Brake | Optional Permanent-Magnet Brake |
| Mounting Arrangement | IM B5 Flange |
| Temperature Monitoring | Integrated Temperature Sensor |
| Protection Class | IP64 / IP65 / IP67 (variant dependent) |
| Compatible Drives | Siemens SINAMICS S120 |
| Manufacturer | Siemens |
Specifications may vary depending on the complete MLFB configuration, encoder type, shaft option, brake option, connector orientation, and protection class selected.
Applications
- CNC Machine Tools
- Industrial Robotics
- Packaging Machinery
- Printing Equipment
- Rotary Tables
- Material Handling Systems
- Semiconductor Manufacturing
- Textile Machinery
- Automated Production Lines
- High-Speed Precision Motion Control




