Siemens 1FK7063-5AF71-1FB3 Synchronous Servo Motor | SIMOTICS S-1FK7 Series
Engineering Background
The Siemens SIMOTICS S-1FK7 series represents Siemens’ flagship compact synchronous servo motor platform, engineered for high-dynamic motion control in precision manufacturing, robotics, and CNC machine tool applications. The 1FK7063-5AF71-1FB3 is a mid-frame variant delivering a balanced combination of torque density, thermal stability, and encoder resolution — purpose-built for demanding servo axes where positioning accuracy and cycle repeatability are non-negotiable.
Product Positioning
This motor is the preferred specification for machine builders integrating Siemens SINAMICS S120 or S110 drive systems. Its natural-cooled housing, high-resolution encoder, and IP65 protection class make it equally suited to clean-room automation and light industrial environments. Procurement engineers sourcing replacement or expansion units will find the 1FK7063-5AF71-1FB3 a direct, drop-in compatible solution within the SIMOTICS S ecosystem.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Part Number / SKU | 1FK7063-5AF71-1FB3 |
| Brand / Manufacturer | Siemens AG |
| Product Family | SIMOTICS S-1FK7 |
| Motor Type | Permanent Magnet Synchronous Servo Motor |
| Frame Size | 63 (IEC) |
| Rated Speed | 3,000 rpm (5AF = 3000 rpm base speed) |
| Cooling Method | Natural Convection (IC410 / Self-cooled) |
| Shaft Type | Plain shaft with key (7 = with key, without holding brake) |
| Encoder Type | Absolute Encoder (1FB3 = DRIVE-CLiQ Absolute Encoder, 22-bit singleturn + 12-bit multiturn) |
| Encoder Interface | DRIVE-CLiQ (native Siemens interface) |
| Protection Class | IP65 (shaft seal standard) |
| Insulation Class | Class F (155°C) |
| Voltage Rating | 400 V AC (nominal) |
| Connection Type | Connector (plug-in power + encoder) |
| Gross Weight | 8.5 kg |
| Compatible Drive Platform | SINAMICS S120, SINAMICS S110 |
| Country of Origin | Germany / EU |
Note: Full rated torque, stall torque, and power data are available on the official Siemens SIMOTICS S-1FK7 datasheet. Contact Konmask for application-specific sizing support.
Proven Application Environments
- CNC Machine Tools — Feed axis and spindle servo drives requiring high repeatability and low cogging torque
- Industrial Robotics — Joint actuators in 6-axis articulated arms and SCARA systems
- Packaging Machinery — High-speed pick-and-place, form-fill-seal, and labeling axes
- Printing & Converting — Register control and tension management on web-fed lines
- Semiconductor & Electronics Assembly — Precision gantry and wafer-handling stages
- Textile Machinery — Winding, unwinding, and traverse motion control
- General Factory Automation — Any SINAMICS S120-based multi-axis servo system
Engineering Advantages
- DRIVE-CLiQ Absolute Encoder (1FB3) — Single-cable encoder interface eliminates separate encoder wiring; 22-bit singleturn resolution delivers <0.1 arc-second positioning repeatability
- High Torque Density — Compact IEC 63 frame with optimized rare-earth magnet geometry maximizes torque-to-inertia ratio for fast dynamic response
- IP65 Sealing — Shaft-end labyrinth seal and sealed connectors protect against coolant splash and fine particulate ingress in machine tool environments
- Thermal Stability — Class F insulation with integrated PTC thermistor enables continuous duty at rated load without derating in ambient temperatures up to 40°C
- Plug-and-Play Integration — DRIVE-CLiQ interface allows automatic motor identification (MLFB read-back) within SINAMICS S120 commissioning, reducing setup time
- Long Service Life — Preloaded precision bearings and sealed construction rated for >30,000 operating hours under standard duty cycles
System Architecture & Signal Flow
[SIMATIC PLC / Motion Controller]
|
| PROFINET / PROFIBUS
|
[SINAMICS S120 Control Unit (CU320-2)]
|
| DRIVE-CLiQ
|
[SINAMICS S120 Motor Module (Booksize/Chassis)]
|
| Power Cable (U/V/W + PE) + DRIVE-CLiQ Cable (combined or separate)
|
[Siemens 1FK7063-5AF71-1FB3 Synchronous Servo Motor]
|
| Mechanical Coupling
|
[Load: Ball Screw / Gearbox / Direct Drive]
The DRIVE-CLiQ interface carries both encoder feedback and motor identification data on a single shielded cable, simplifying cabinet wiring and enabling automatic parameter upload during drive commissioning.
Sourcing & Quality Verification
- OEM Traceability — All units supplied with original Siemens MLFB label and factory serial number; traceable through Siemens Industry Online Support (SIOS)
- Inspection Protocol — Each unit undergoes incoming inspection: nameplate verification, shaft runout check, insulation resistance test (IR >100 MΩ at 500 VDC), and encoder communication handshake test
- Packaging — Shipped in original or equivalent anti-static foam-lined carton with shaft protection cap and connector dust covers
- Warranty — 12-month warranty against manufacturing defects from date of shipment
- Certification — CE marked; compliant with EU Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU
Procurement Process
-
Confirm Part Number — Verify the full MLFB string:
1FK7063-5AF71-1FB3matches your BOM or existing motor nameplate - Request Quote — Contact support@konmask.com with quantity, required delivery date, and destination port
- Order Confirmation — Purchase order accepted; lead time and shipping terms confirmed within 24 business hours
- Inspection & Dispatch — Unit inspected, documented, and dispatched with commercial invoice, packing list, and test record
- After-Sales Support — Technical support available for installation, commissioning, and drive parameter configuration
Technical FAQ
Q: Is the 1FK7063-5AF71-1FB3 compatible with SINAMICS S120 Booksize Motor Modules?
A: Yes. The DRIVE-CLiQ encoder interface and standard power connector are fully compatible with all SINAMICS S120 Booksize and Chassis Motor Modules. Automatic motor identification (AMI) is supported.
Q: Can this motor be used with a SINAMICS S110 single-axis drive?
A: Yes, provided the S110 Motor Module current rating matches the 1FK7063 stall current. Verify sizing using the Siemens SIZER for Siemens Drives tool.
Q: What is the difference between the 1FB3 and 1FG1 encoder options?
A: The 1FB3 is a DRIVE-CLiQ absolute encoder (22-bit ST + 12-bit MT) requiring a DRIVE-CLiQ cable. The 1FG1 is an incremental TTL encoder requiring a separate encoder cable and external evaluation. The 1FB3 is recommended for new installations.
Q: Does the motor include a holding brake?
A: No. The “7” in position 9 of the MLFB (5AF71) indicates plain shaft without holding brake. If a brake is required, specify the “2” variant (e.g., 5AF72).
Q: What is the lead time for the 1FK7063-5AF71-1FB3?
A: Stock availability varies. Contact Konmask for real-time inventory status. Standard lead time for non-stock units is 2–6 weeks depending on origin.
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