Siemens 1FK6101-8AF71-1 Synchronous Servo Motor | Replacement, Equivalent & Selection Guide
The Siemens 1FK6101-8AF71-1 is a high-performance permanent-magnet synchronous servo motor from the SIMOTICS S / 1FK6 series, engineered for precision motion control in demanding industrial automation applications. This page provides full technical specifications, compatible replacement options, equivalent models, and a structured selection guide to help engineers and procurement teams make confident sourcing decisions.
Technical Specifications
| Parameter | Value |
|---|---|
| Part Number (SKU) | 1FK6101-8AF71-1 |
| Brand / Manufacturer | Siemens AG |
| Series | SIMOTICS S — 1FK6 |
| Motor Type | Permanent-Magnet Synchronous Servo Motor |
| Rated Speed | 2,000 rpm |
| Rated Torque | ~48 Nm (verify against official Siemens datasheet) |
| Encoder | Incremental / Absolute (suffix -1 = with holding brake) |
| Cooling | Natural convection (self-cooled) |
| Protection Class | IP64 |
| Insulation Class | F |
| Country of Origin | Germany |
| HS Code | 8501.52.00.00 |
| Compatible Drive | SINAMICS S120 / S110 / MASTERDRIVES |
Always verify specifications against the official Siemens datasheet before final design-in.
Compatible Replacement & Equivalent Models
When the 1FK6101-8AF71-1 is unavailable or discontinued, the following models may serve as functional replacements. Verify mechanical dimensions, encoder type, and drive compatibility before substitution.
| Model | Brand | Rated Torque | Speed | Notes |
|---|---|---|---|---|
| 1FK7101-5AF71-1 | Siemens | ~48 Nm | 2,000 rpm | Next-gen 1FK7 series — recommended direct upgrade |
| 1FK6100-8AF71-1 | Siemens | ~45 Nm | 2,000 rpm | Lower frame; verify flange compatibility |
| HG-SR502 | Mitsubishi | 50 Nm | 2,000 rpm | Cross-brand; requires drive adaptation |
| SGMGH-44ACA61 | Yaskawa | 43 Nm | 1,500 rpm | Cross-brand; verify encoder protocol |
| AKM52K-ANCNR-00 | Kollmorgen | ~46 Nm | 2,000 rpm | Cross-brand alternative |
Important: Cross-brand replacements require drive parameter reconfiguration. Consult your system integrator.
Why Choose the Original Model
- Plug-and-play compatibility with existing SINAMICS / MASTERDRIVES systems — no re-parameterization needed.
- Certified performance — factory-tested torque linearity and encoder accuracy.
- Proven reliability in 24/7 production environments across automotive, packaging, and machine tool industries.
- Full Siemens ecosystem support — TIA Portal integration, SIZER sizing tool, and global service network.
- Genuine spare parts availability — encoder heads, shaft seals, and connectors from authorized channels.
Typical Applications
- CNC machine tool spindle and feed axis drives
- Packaging machinery (form-fill-seal, labeling, cartoning)
- Printing and converting equipment
- Robotic arm joints and gantry systems
- Semiconductor and electronics assembly automation
- Textile and winding machinery
System Compatibility
The 1FK6101-8AF71-1 operates seamlessly with the following Siemens drive and control platforms:
- SINAMICS S120 — booksize and chassis format drive modules
- SINAMICS S110 — single-axis positioning drives
- SIMOTION D/C/P — motion control systems
- SINUMERIK 840D sl / 828D — CNC controllers
- MASTERDRIVES MC — legacy motion control (verify firmware version)
Selection Guide
Use the checklist below to confirm the 1FK6101-8AF71-1 is the right motor for your application:
- ☑ Torque requirement: Peak torque ≤ motor rated peak torque (check datasheet)
- ☑ Speed range: Operating speed ≤ 2,000 rpm continuous / 3,000 rpm peak
- ☑ Shaft & flange: Confirm shaft diameter, key, and flange (IEC B5) match your gearbox or coupling
- ☑ Encoder type: Match encoder protocol (TTL incremental / EnDat absolute) to your drive
- ☑ Holding brake: Suffix -1 = integrated holding brake — confirm 24 VDC supply
- ☑ Ambient temperature: Rated 0–40 °C; derate above 40 °C
- ☑ Mounting orientation: Horizontal or vertical — verify seal requirements
Need help sizing? Contact our technical team at support@konmask.com.
Quality Assurance & Sourcing
- Source: Authorized distributors and certified surplus channels — no counterfeit risk.
- Inspection: Visual, dimensional, and functional verification before shipment.
- Documentation: Certificate of conformity, test report, and original packaging available on request.
- Warranty: 12-month warranty against manufacturing defects.
- Lead time: In-stock units ship within 2 business days; sourced units within 7–15 business days.
How to Order
- Click Add to Cart or Request a Quote on this page.
- Provide your PO number, delivery address, and required quantity.
- Our team confirms stock, pricing, and lead time within 24 hours.
- Payment via T/T bank transfer, PayPal, or credit card (USD / HKD / EUR accepted).
- Shipment via DHL / FedEx / UPS with full tracking and export documentation.
For bulk orders (>5 units) or urgent requirements:
📧 support@konmask.com | 📞 +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace 1FK6101-8AF71-1 with a 1FK7 series motor?
A: Yes. The 1FK7101-5AF71-1 is the recommended next-generation replacement. Verify encoder cable pinout and drive firmware version.
Q: Is the holding brake voltage 24 VDC?
A: Yes. The -1 suffix variant brake operates at 24 VDC. Confirm your control cabinet supplies this voltage.
Q: Can this motor run on a third-party drive (e.g., Fanuc, Mitsubishi)?
A: Technically possible with custom parameterization, but not recommended. Cross-brand use may void warranty and reduce performance.
Q: What is the difference between 1FK6101-8AF71-1 and 1FK6101-8AF71-0?
A: The trailing digit indicates the holding brake option. -1 = with holding brake; -0 = without holding brake. All other specifications are identical.
Q: Do you provide a test report or certificate of conformity?
A: Yes. Documentation is available upon request for all units shipped from Konmask.com.
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Contact: support@konmask.com | +0086 19859288691
