steve
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3 months ago
1FK7044-7AH71-1DB5
Siemens 1FK7044-7AH71-1DB5 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 1FK7044-7AH71-1DB5 is a SIMOTICS S-1FK7 High Dynamic synchronous servo motor designed for precise motion control in demanding automation applications. This permanent-magnet motor is rated at 1.4 kW with a rated speed of 4,500 rpm and a rated torque of 3.0 Nm, offering strong dynamic response for positioning, handling, packaging, machine tool and production machinery tasks.
Built with natural cooling and a robust anthracite grey housing, the 1FK7044-7AH71-1DB5 features IP65 protection with an IP67 drive-end flange, making it suitable for industrial environments where reliable operation and mechanical durability are required. The motor includes a feather key shaft end, rotatable power and signal connectors, and an integrated holding brake with 4.0 Nm holding torque.
For accurate feedback and controlled performance, this servo motor is fitted with an IC22DQ incremental encoder providing 22-bit resolution with commutation position data. Additional features include KTY84 temperature monitoring in the stator winding, Grade A vibration severity, IM B5 mounting compatibility, and a shaft height of 48 mm. With a net weight of 8.3 kg, 91% efficiency, and a maximum torque capability of 12.0 Nm, the Siemens 1FK7044-7AH71-1DB5 is well suited to high-performance servo drive systems requiring speed, precision and dependable torque output.
Built with natural cooling and a robust anthracite grey housing, the 1FK7044-7AH71-1DB5 features IP65 protection with an IP67 drive-end flange, making it suitable for industrial environments where reliable operation and mechanical durability are required. The motor includes a feather key shaft end, rotatable power and signal connectors, and an integrated holding brake with 4.0 Nm holding torque.
For accurate feedback and controlled performance, this servo motor is fitted with an IC22DQ incremental encoder providing 22-bit resolution with commutation position data. Additional features include KTY84 temperature monitoring in the stator winding, Grade A vibration severity, IM B5 mounting compatibility, and a shaft height of 48 mm. With a net weight of 8.3 kg, 91% efficiency, and a maximum torque capability of 12.0 Nm, the Siemens 1FK7044-7AH71-1DB5 is well suited to high-performance servo drive systems requiring speed, precision and dependable torque output.
| Specification | Description |
|---|---|
| Manufacturer | Siemens |
| Part Number | 1FK7044-7AH71-1DB5 |
| Alternative Part Number | 1FK70447AH711DB5 |
| Product Range | SIMOTICS S-1FK7 |
| Product Type | Synchronous servo motor |
| Motor Design | Permanent-magnet synchronous motor |
| Performance Class | High Dynamic |
| Rated Power | 1.4 kW |
| Rated Speed | 4,500 rpm |
| Rated Torque | 3.0 Nm at 100 K |
| Rated Current | 4.9 A |
| Number of Poles | 6 |
| Static Torque | 3.00 Nm at 60 K; 4.00 Nm at 100 K |
| Stall Current | 4.60 A at 60 K; 6.30 A at 100 K |
| Maximum Torque | 12.0 Nm |
| Maximum Current | 20.0 A |
| Maximum Mechanical Speed | 8,000 rpm |
| Maximum Inverter Speed | 13,300 rpm |
| Efficiency | 91.0% |
| Moment of Inertia | 1.410 kgcm² |
| Torque Constant | 0.63 Nm/A |
| Voltage Constant | 42.0 V/1000 rpm at 20 °C |
| Winding Resistance | 0.81 Ω at 20 °C |
| Rotating Field Inductance | 11.0 mH |
| Electrical Time Constant | 13.50 ms |
| Mechanical Time Constant | 0.78 ms |
| Thermal Time Constant | 45 min |
| Shaft Torsional Stiffness | 9,500 Nm/rad |
| Shaft Height | 48 |
| Shaft End | Feather key |
| Mounting Arrangement | IM B5, also suitable for IM V1 and IM V3 arrangements |
| Cooling Method | Natural cooling |
| Holding Brake | Integrated permanent-magnet holding brake |
| Holding Brake Voltage | 24 V DC ±10% |
| Holding Brake Coil Current | 0.5 A |
| Holding Torque | 4.0 Nm |
| Brake Opening Time | 70 ms |
| Brake Closing Time | 30 ms |
| Highest Braking Work | 150 J |
| Encoder System | IC22DQ incremental encoder, 22-bit resolution with 2,048 S/R internal encoder resolution and 11-bit commutation position |
| Temperature Monitoring | KTY84 temperature sensor in the stator winding |
| Electrical Connections | Rotatable connectors for power and signal connections |
| Connector Size | Size 1 |
| Degree of Protection | IP65, with drive-end flange rated IP67 |
| Vibration Severity Grade | Grade A |
| Radial Runout Tolerance | 0.040 mm |
| Concentricity Tolerance | 0.08 mm |
| Axial Runout Tolerance | 0.08 mm |
| Housing Colour | Standard anthracite grey, RAL 7016 |
| Recommended Motor Module Rated Current | 9 A |
| Recommended Motor Module Maximum Current | 18 A |
| Net Motor Weight | 8.3 kg |
| Commodity Code | 850152 |
What type of motor is this?
This is a SIMOTICS S synchronous servo motor designed for dynamic motion control applications. It uses permanent-magnet synchronous motor technology and is suited to precise speed and torque control in industrial automation systems.
What is the rated output power?
The motor has an optimum output power of 1.4 kW, making it suitable for compact servo applications where high dynamic response and accurate positioning are required.
What is the rated speed?
The rated speed is 4,500 rpm. This is also listed as the optimum operating speed for the 1FK7044-7AH71-1DB5 configuration.
What is the rated current?
The rated current is 4.9 A. The motor also has stall current values of 4.6 A at 60 K and 6.3 A at 100 K.
Does this motor include a holding brake?
Yes. This configuration includes a holding brake with a permanent-magnet brake design. The holding torque is 4.0 Nm, with a 24 V DC supply requirement.
What voltage is required for the brake?
The holding brake requires a 24 V DC supply with a tolerance of ±10%. The brake coil current is 0.5 A.
What encoder system is fitted?
The motor is fitted with an IC22DQ incremental encoder. It has 22-bit resolution, encoder-internal 2048 S/R, and an 11-bit commutation position.
What is the rated torque?
The rated torque is 3.0 Nm at 100 K. The static torque is 3.00 Nm at 60 K and 4.00 Nm at 100 K.
What is the maximum torque?
The limiting maximum torque is 12.0 Nm. The recommended motor module data also lists a maximum torque value of 11.00 Nm.
What is the maximum permissible speed?
The maximum permissible mechanical speed is 8,000 rpm, while the maximum permissible inverter speed is 13,300 rpm.
What level of ingress protection does it have?
The motor has an IP65 degree of protection, with the drive-end flange rated to IP67. This makes it suitable for many demanding industrial environments when installed correctly.
How is the motor cooled?
This motor uses natural cooling. It does not rely on a separate forced-cooling fan for normal operation.
What is the mounting arrangement?
The motor is designed according to Code I with an IM B5 mounting arrangement. It is also suitable for IM V1 and IM V3 installation positions.
What type of shaft end does it have?
The shaft end is supplied with a feather key, which helps provide a positive mechanical drive connection to compatible couplings, pulleys or gear units.
What is the motor weight?
The net weight of the motor is approximately 8.3 kg.
What is the efficiency rating?
The listed efficiency is 91.0%, which is typical of a high-performance permanent-magnet servo motor in this class.
What temperature monitoring is included?
Temperature monitoring is provided by a KTY84 temperature sensor located in the stator winding.
What connector arrangement does it use?
The motor uses rotatable connectors for signal and power connections. The connector size is listed as size 1.
What is the housing colour?
The standard housing colour is anthracite grey, RAL 7016.
What applications is this motor commonly used for?
This type of synchronous servo motor is commonly used in machine tools, packaging machinery, handling systems, automated production equipment and positioning axes requiring accurate motion control.
- Precision positioning axes in automated machinery
- High-dynamic motion control in packaging equipment
- Servo-driven feed systems for production lines
- Indexing tables and rotary positioning applications
- Pick-and-place handling systems
- CNC machine tool axis control
- Textile and converting machinery requiring accurate speed regulation
- Printing and labelling equipment with synchronised motion
- Robotics and gantry systems for controlled linear or rotary movement
- Assembly automation requiring repeatable torque and speed performance
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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