steve
Got hold of Sime for a Carrier card for…
Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime
4 weeks ago
1FK7103-2AF71-1RA2
Siemens 1FK7103-2AF71-1RA2 available at EU Automation. Get in touch today for a quick price.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 1FK7103-2AF71-1RA2 is a SIMOTICS S-1FK7 compact synchronous servo motor designed for precise motion control in demanding industrial automation applications. Built with permanent-magnet technology, it provides high dynamic performance, efficient operation and accurate positioning for machinery requiring reliable speed and torque control.
This motor has a rated speed of 3,000 rpm and a rated torque of 14 Nm, with a static torque of up to 36 Nm and a maximum torque of 108 Nm. It features natural cooling, an IP65 protection rating with IP67 protection at the drive-end flange, and a robust anthracite RAL 7016 housing suited to industrial environments. The unit is supplied without a holding brake and includes a feather key shaft end for secure mechanical coupling.
For feedback and positioning, the 1FK7103-2AF71-1RA2 incorporates an AM20DQI absolute encoder with 20-bit resolution and 12-bit multiturn capability. Rotatable connectors for power and signal connections support flexible installation, while the integrated Pt1000 temperature sensor enables motor temperature monitoring within the drive system. With a net motor weight of 28.5 kg, shaft height of 100 mm and compact construction, this Siemens servo motor is well suited to machine tools, packaging equipment, handling systems and other precision automation machinery.
This motor has a rated speed of 3,000 rpm and a rated torque of 14 Nm, with a static torque of up to 36 Nm and a maximum torque of 108 Nm. It features natural cooling, an IP65 protection rating with IP67 protection at the drive-end flange, and a robust anthracite RAL 7016 housing suited to industrial environments. The unit is supplied without a holding brake and includes a feather key shaft end for secure mechanical coupling.
For feedback and positioning, the 1FK7103-2AF71-1RA2 incorporates an AM20DQI absolute encoder with 20-bit resolution and 12-bit multiturn capability. Rotatable connectors for power and signal connections support flexible installation, while the integrated Pt1000 temperature sensor enables motor temperature monitoring within the drive system. With a net motor weight of 28.5 kg, shaft height of 100 mm and compact construction, this Siemens servo motor is well suited to machine tools, packaging equipment, handling systems and other precision automation machinery.
| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Part Number | 1FK7103-2AF71-1RA2 |
| Product Range | SIMOTICS S-1FK7 |
| Product Type | Permanent-magnet synchronous servo motor |
| Motor Design | Compact motor construction |
| Rated Speed | 3,000 rpm |
| Rated Torque | 14.0 Nm |
| Rated Current | 11.5 A |
| Static Torque at 60 K | 30.00 Nm |
| Static Torque at 100 K | 36.00 Nm |
| Stall Current at 60 K | 21.00 A |
| Stall Current at 100 K | 26.00 A |
| Maximum Torque | 108.0 Nm |
| Maximum Current | 84.0 A |
| Maximum Permissible Mechanical Speed | 5,000 rpm |
| Maximum Permissible Inverter Speed | 5,000 rpm |
| Number of Poles | 8 |
| Efficiency | 93.0% |
| Torque Constant | 1.39 Nm/A |
| Voltage Constant at 20°C | 89.5 V/1000 rpm |
| Winding Resistance at 20°C | 0.09 Ω |
| Rotating Field Inductance | 2.4 mH |
| Electrical Time Constant | 27.00 ms |
| Mechanical Time Constant | 1.46 ms |
| Thermal Time Constant | 65 min |
| Moment of Inertia | 104.000 kgcm² |
| Shaft Torsional Stiffness | 148,000 Nm/rad |
| Shaft Height | 100 |
| Cooling Method | Natural cooling |
| Degree of Protection | IP65 with DE flange IP67 |
| Mounting Design | IM B5, also suitable for IM V1 and IM V3 orientations |
| Shaft End | Feather key |
| Holding Brake | Without holding brake |
| Encoder System | AM20DQI absolute encoder, 20-bit resolution with 12-bit multiturn capability |
| Encoder Resolution | 1,048,576 counts, encoder-internal 512 S/R |
| Multiturn Range | 4,096 revolutions |
| Temperature Monitoring | Pt1000 temperature sensor |
| Electrical Connection | Rotatable connectors for signal and power |
| Connector Size | 1.5 |
| Housing Colour | Anthracite RAL 7016 |
| Vibration Severity Grade | Grade A |
| Radial Runout Tolerance | 0.050 mm |
| Concentricity Tolerance | 0.10 mm |
| Axial Runout Tolerance | 0.10 mm |
| Optimum Speed | 2,500 rpm |
| Optimum Power | 5.4 kW |
| Recommended Motor Module Rated Inverter Current | 30 A |
| Recommended Motor Module Maximum Inverter Current | 90 A |
| Net Weight | 28.5 kg |
What type of motor is this?
This is a SIMOTICS S-1FK7 compact permanent-magnet synchronous servo motor. It is intended for precise motion control applications where accurate speed, position and torque behaviour are required.
What is the rated speed of this motor?
The motor has a rated speed of 3,000 revolutions per minute at 100 K temperature rise.
What rated torque does this motor provide?
The rated torque is 14.0 Nm at 100 K. The static torque is 30.0 Nm at 60 K and 36.0 Nm at 100 K.
What is the maximum torque of this motor?
The maximum torque is 108.0 Nm, making it suitable for dynamic applications that require short-term peak torque above the rated operating point.
What encoder is fitted to this motor?
The motor is fitted with an AM20DQI absolute encoder with 20-bit resolution and 12-bit multiturn capability, giving a traversing range of 4,096 revolutions.
Does this motor include a holding brake?
No. This configuration is supplied without a holding brake.
What shaft configuration does this motor use?
The motor has a shaft end with a feather key, allowing mechanical coupling to compatible drive components.
How is this motor cooled?
This model uses natural cooling, so it does not rely on an integrated fan for normal heat dissipation.
What is the ingress protection rating?
The motor has an IP65 degree of protection, with the drive-end flange rated to IP67.
What is the recommended inverter current rating?
For 1FK7103-2AF71-1RA2, the recommended motor module values are 30 A rated inverter current and 90 A maximum inverter current.
What is the motor weight?
The net motor weight is approximately 28.5 kg.
What is the optimum operating point?
The optimum operating point is listed as 2,500 revolutions per minute with an optimum power of 5.4 kW.
- Precision servo axis control in automated machinery
- High-torque motion control for packaging equipment
- Positioning tasks in handling and pick-and-place systems
- Drive applications in production and assembly lines
- Rotary motion control for indexing tables and turntables
- Feed axis operation in machine tools and CNC equipment
- Conveyor control where accurate speed and positioning are required
- Robotics applications requiring compact, high-performance servo motion
- Printing, labelling and converting machinery
- Textile and winding machinery with controlled acceleration and deceleration
- Material handling systems requiring repeatable motion
- Industrial automation systems using SINAMICS drive technology
This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.
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Customer reviews
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Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping.
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