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
1 month ago
1FK7081-2AF74-1SB2
Siemens 1FK7081-2AF74-1SB2 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 1FK7081-2AF74-1SB2 is a SIMOTICS S-1FK7 permanent-magnet synchronous servo motor designed for precise motion control in industrial automation applications. Built in a compact motor format with natural cooling, it provides a rated speed of 3000 rpm and strong torque performance, with 10.00 Nm rated torque and up to 37.0 Nm maximum torque.
This motor features a shaft height of 80 mm, feather key shaft extension and IM B5 mounting arrangement, making it suitable for integration into machine tools, handling systems, packaging equipment, production lines and other servo-driven machinery. It includes a holding brake with 22.0 Nm holding torque and a multi-pole resolver encoder system for accurate position and speed feedback.
With IP65 protection and IP67 protection at the drive-end flange, the 1FK7081-2AF74-1SB2 is suited to demanding industrial environments. Additional characteristics include rotatable signal and power connectors, Pt1000 temperature monitoring, anthracite RAL 7016 housing colour and a motor weight of approximately 15.9 kg. This Siemens servo motor is a robust choice for applications requiring reliable dynamic performance, accurate control and compact mechanical integration.
This motor features a shaft height of 80 mm, feather key shaft extension and IM B5 mounting arrangement, making it suitable for integration into machine tools, handling systems, packaging equipment, production lines and other servo-driven machinery. It includes a holding brake with 22.0 Nm holding torque and a multi-pole resolver encoder system for accurate position and speed feedback.
With IP65 protection and IP67 protection at the drive-end flange, the 1FK7081-2AF74-1SB2 is suited to demanding industrial environments. Additional characteristics include rotatable signal and power connectors, Pt1000 temperature monitoring, anthracite RAL 7016 housing colour and a motor weight of approximately 15.9 kg. This Siemens servo motor is a robust choice for applications requiring reliable dynamic performance, accurate control and compact mechanical integration.
| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Part Number | 1FK7081-2AF74-1SB2 |
| Product Range | SIMOTICS S-1FK7 |
| Product Type | Permanent-magnet synchronous servo motor |
| Motor Design | Compact motor construction for dynamic motion applications |
| Rated Speed | 3000 rpm |
| Maximum Permissible Speed | 6000 rpm |
| Rated Torque at 100 K | 8.7 Nm |
| Static Torque at 60 K | 10.00 Nm |
| Static Torque at 100 K | 12.0 Nm |
| Maximum Torque | 37.0 Nm |
| Rated Current | 6.8 A |
| Stall Current at 60 K | 7.10 A |
| Stall Current at 100 K | 8.70 A |
| Maximum Current | 30.0 A |
| Efficiency | 93.0% |
| Optimum Power | 2.8 kW |
| Optimum Speed | 3000 rpm |
| Optimum Operating Point Torque | 34.10 Nm |
| Number of Poles | 8 |
| Encoder System | Multi-pole resolver, with pole-pair count corresponding to the motor pole pairs |
| Holding Brake | Integrated permanent-magnet holding brake |
| Holding Brake Supply Voltage | DC 24 V ± 10% |
| Holding Brake Current | 0.9 A |
| Holding Brake Torque | 22.0 Nm |
| Brake Opening Time | 60 ms |
| Brake Closing Time | 200 ms |
| Highest Braking Work | 1400 J |
| Cooling Method | Natural cooling |
| Degree of Protection | IP65, with DE flange rated to IP67 |
| Mounting Arrangement | IM B5, also suitable for IM V1 and IM V3 orientations |
| Shaft Height | 80 mm |
| Shaft Extension | Feather key shaft |
| Electrical Connectors | Rotatable connectors for power and signal connections |
| Temperature Monitoring | Pt1000 temperature sensor |
| Housing Colour | Standard anthracite, RAL 7016 |
| Net Weight | 15.9 kg |
| Moment of Inertia | 23.500 kgcm² |
| Winding Resistance at 20°C | 0.42 Ω |
| Rotating Field Inductance | 7.7 mH |
| Torque Constant | 1.38 Nm/A |
| Voltage Constant at 20°C | 88.5 V/1000 rpm |
| Electrical Time Constant | 1.35 ms |
| Mechanical Time Constant | 18.20 ms |
| Thermal Time Constant | 45 min |
| Shaft Torsional Stiffness | 76000 Nm/rad |
| Vibration Severity Grade | Grade A |
| Radial Runout Tolerance | 0.050 mm |
| Concentricity Tolerance | 0.10 mm |
| Axial Runout Tolerance | 0.10 mm |
| Recommended Motor Module Rated Inverter Current | 9 A |
| Recommended Motor Module Maximum Inverter Current | 27 A |
What type of motor is this component?
This component is a SIMOTICS S-1FK7 permanent-magnet synchronous servo motor. It is designed for precise motion control applications where accurate speed, torque and positioning performance are required.
What is the rated speed of this servo motor?
The rated speed is 3000 rpm, with a maximum permissible speed of 6000 rpm.
What is the rated torque of this motor?
The rated torque at 100 K is 8.7 Nm. The static torque is listed as 10.00 Nm at 60 K and 12.0 Nm at 100 K.
Does this motor include a holding brake?
Yes. This motor is configured with a permanent-magnet holding brake. The holding torque is 22.0 Nm, with an opening time of 60 ms and a closing time of 200 ms.
What encoder system is used with this motor?
The motor uses a multi-pole resolver. The number of resolver pole pairs corresponds to the number of pole pairs in the motor.
What cooling method does this motor use?
This servo motor uses natural cooling, meaning it is designed to dissipate heat without an integrated fan.
What is the degree of protection for the motor housing?
The motor is rated IP65, with the drive-end flange rated IP67. This indicates strong protection against dust and resistance to water ingress under specified conditions.
What shaft configuration does this motor have?
The motor has a shaft extension with a feather key, making it suitable for keyed mechanical couplings and drive connections.
What mounting arrangement is specified for this motor?
The specified design is IM B5, with IM V1 and IM V3 mounting positions also referenced. This indicates a flange-mounted motor arrangement.
What is the approximate motor weight?
The net weight of the motor is approximately 15.9 kg.
What current values are listed for this motor?
The rated current is 6.8 A. The stall current is listed as 7.10 A at 60 K and 8.70 A at 100 K. The maximum current is 30.0 A.
What are the key physical constants for this motor?
Key values include a torque constant of 1.38 Nm/A, a voltage constant of 88.5 V per 1000 rpm, winding resistance of 0.42 ohms at 20°C, and rotating field inductance of 7.7 mH.
- Precision motion control in automated production machinery
- Servo axis drives for packaging and labelling equipment
- Positioning applications in CNC machines and machining centres
- Feed and handling axes in robotics and pick-and-place systems
- Indexing tables, rotary axes and transfer mechanisms
- Conveying systems requiring accurate speed and torque control
- Printing, converting and textile machinery motion axes
- Assembly line automation with repeated start-stop movement
- Material handling equipment with controlled acceleration and braking
- Machine tool applications requiring compact, high-performance servo operation
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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