SIEMENS 1FK7042-5AF71-1FG0 Synchronous Servo Motor – SIMOTICS S-1FK7 Series
When a servo axis loses its drive motor on a production line, the entire machine halts — CNC machining centers stop mid-cycle, robotic arms freeze in position, and packaging lines back up within seconds. Unplanned downtime in high-throughput industrial environments can cost thousands of dollars per hour. The SIEMENS 1FK7042-5AF71-1FG0 is the precision servo motor engineered to prevent exactly that scenario, delivering reliable, high-dynamic torque control that keeps critical automation systems running without interruption.
Within the SIMOTICS S-1FK7 family — Siemens’ flagship compact synchronous servo motor series — the 1FK7042-5AF71-1FG0 occupies the mid-range shaft-height class (42 mm), optimized for applications demanding a balance of compact footprint and robust dynamic response. This series is deployed globally across SINUMERIK CNC systems, SINAMICS S120 drive platforms, and SIMATIC motion controllers, making it one of the most widely integrated servo motors in the industrial automation market.
Technical Specifications
- Manufacturer: SIEMENS AG
- Part Number / SKU: 1FK7042-5AF71-1FG0
- Series: SIMOTICS S-1FK7
- Motor Type: Permanent Magnet Synchronous Servo Motor
- Shaft Height: 42 mm
- Rated Speed: 3000 rpm (5AF7 = 3000 rpm natural cooling)
- Cooling Method: Natural convection (self-cooled)
- Encoder: Incremental encoder (1FG0 = incremental, 2048 ppr)
- Protection Rating: IP65 (shaft seal standard)
- Holding Brake: Without holding brake
- Shaft End: Smooth shaft (plain shaft)
- Connector Orientation: Axial connector
- Insulation Class: F (155°C)
- Weight: Approx. 12.5 kg
- Compatible Drive: SINAMICS S120, SINAMICS S110
Note: All specifications are based on Siemens published datasheets. Konmask.com does not modify or fabricate technical parameters.
Key Features & Benefits
- High Dynamic Response: Permanent magnet rotor design enables rapid acceleration and deceleration, critical for servo-controlled axes in CNC and robotics.
- Compact 42 mm Frame: Space-efficient design fits tight machine cabinets and multi-axis gantry systems without sacrificing torque density.
- IP65 Protection: Sealed against dust ingress and low-pressure water jets — suitable for wash-down environments and dusty factory floors.
- Incremental Encoder (2048 ppr): Provides precise position and speed feedback for closed-loop control via SINAMICS drives.
- Natural Cooling: No external fan required, reducing mechanical complexity and maintenance overhead.
- Plug-and-Play with SINAMICS S120: Pre-configured motor data sets (MLFB) allow fast commissioning via STARTER or TIA Portal.
- Long Service Life: Siemens-grade bearings and winding insulation rated for continuous industrial duty cycles.
Industry & Equipment Applications
- CNC Machine Tools: Feed axis drives on milling centers, lathes, and grinding machines running SINUMERIK 840D/828D.
- Packaging Machinery: High-speed pick-and-place, form-fill-seal, and labeling machines requiring precise position control.
- Printing & Converting: Register control and web tension management on offset and flexographic presses.
- Robotics & Handling: Joint actuators on SCARA and Cartesian robots in automotive and electronics assembly.
- Semiconductor Equipment: Wafer handling stages and precision positioning systems.
- Textile Machinery: Yarn tension control and pattern-drive axes on weaving and knitting machines.
System Integration & Compatible Parts
The 1FK7042-5AF71-1FG0 is designed for seamless integration within the Siemens SINAMICS/SIMOTICS ecosystem:
- Compatible Drives: SINAMICS S120 (booksize / chassis), SINAMICS S110
- Power Connectors: Siemens pre-assembled power cables for 1FK7 (order separately by cable length)
- Encoder Cables: DRIVE-CLiQ or incremental encoder signal cables for S120 CU320-2
- Gearboxes: Stöber, Neugart, or Siemens-compatible planetary gearheads (42 mm flange)
- Controllers: SIMATIC S7-1500T, SINUMERIK 840D sl, SINUMERIK ONE
- Related Motors: 1FK7032, 1FK7060, 1FK7063 (same series, different frame sizes)
Our Quality Assurance Process
At Konmask.com, every SIEMENS servo motor undergoes a rigorous verification process before shipment:
- ✅ Authenticity Verification: Cross-referenced against Siemens MLFB coding rules and factory labeling standards.
- ✅ Visual Inspection: Shaft, encoder connector, and housing checked for damage, corrosion, or tampering.
- ✅ Encoder Signal Test: Incremental encoder output verified with oscilloscope or drive commissioning tool.
- ✅ Documentation: CE declaration of conformity and Siemens product certificate available on request.
- ✅ Secure Packaging: Anti-static foam and moisture-barrier packaging for international freight.
How to Order
- Submit your inquiry via the Contact / RFQ form on this page.
- Provide your required quantity, delivery destination, and any urgency requirements.
- Our technical team will confirm availability, lead time, and issue a formal quotation within 24 hours.
- Upon PO confirmation, we arrange export documentation and international shipping (DHL / FedEx / sea freight).
Minimum Order Quantity: 1 unit | Lead Time: Subject to stock availability | Payment: T/T, L/C, Western Union
Why Choose Konmask.com?
- 🌐 Global B2B Supplier specializing in industrial automation components from leading brands.
- 🔧 Technical Expertise: Our team includes qualified automation engineers who can advise on compatibility and alternatives.
- 📦 Fast Sourcing: Access to both new and surplus stock across SIEMENS, ABB, Mitsubishi, Fanuc, and more.
- 📋 Export-Ready Documentation: Commercial invoice, packing list, COO, and CE certificates provided.
- 🤝 Long-Term Partnership: Trusted by MRO teams, OEM manufacturers, and system integrators in 30+ countries.
Frequently Asked Questions
Q: Is the SIEMENS 1FK7042-5AF71-1FG0 a new or refurbished unit?
A: We supply both new-in-box and tested surplus units. Please specify your requirement in the RFQ and we will confirm the condition and source.
Q: Which SINAMICS drive is compatible with the 1FK7042-5AF71-1FG0?
A: This motor is fully compatible with the SINAMICS S120 drive system (booksize and chassis format) and SINAMICS S110. Motor data is pre-loaded via the MLFB code during STARTER/TIA Portal commissioning.
Q: Can this motor be used without a holding brake?
A: Yes. The 1FG0 variant does not include a holding brake. For vertical axes or gravity-loaded applications, consider the 1FK7042-5AF71-1EG0 (with brake) variant.
Q: What is the encoder resolution of the 1FK7042-5AF71-1FG0?
A: The 1FG0 suffix denotes an incremental encoder with 2048 pulses per revolution (ppr), providing 8192 edges per revolution in quadrature mode.
Q: Do you provide export documentation for international orders?
A: Yes. We provide full export documentation including commercial invoice, packing list, certificate of origin, and CE declaration. HS code guidance is available upon request.
Q: What is the lead time for the 1FK7042-5AF71-1FG0?
A: Lead time depends on current stock levels. In-stock units ship within 3–5 business days. Out-of-stock items are typically sourced within 2–4 weeks. Contact us for real-time availability.
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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
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