Siemens 1PH8081-1SU02-3NA1-Z Servo Motor | Replacement, Equivalent & Selection Guide
The Siemens 1PH8081-1SU02-3NA1-Z is a compact, high-performance synchronous servo motor from the SIMOTICS M-1PH8 series, engineered for precision motion control in demanding industrial automation environments. This page provides full technical specifications, compatible replacement models, application guidance, and sourcing information to help engineers and procurement teams make confident decisions.
Technical Specifications
| Manufacturer | Siemens AG |
| Part Number / SKU | 1PH8081-1SU02-3NA1-Z |
| Series | SIMOTICS M — 1PH8 |
| Motor Type | Synchronous Servo Motor |
| Frame Size | SH 80 |
| Cooling Method | Forced ventilation (suffix U) |
| Encoder | Absolute encoder (DRIVE-CLiQ interface) |
| Drive Interface | SINAMICS S120 / S150 compatible |
| Protection Class | IP64 (standard) |
| Insulation Class | F |
| Certification | CE, UL |
| Country of Origin | Germany / EU |
Note: For exact rated torque, speed, and power values, refer to the official Siemens SIMOTICS M catalog or contact our technical team.
Compatible Replacement & Equivalent Models
When the original 1PH8081-1SU02-3NA1-Z is unavailable or cost-prohibitive, the following models may serve as functional equivalents. Always verify electrical and mechanical compatibility before substitution.
| Model | Brand | Compatibility Notes |
|---|---|---|
| 1PH8081-1SU02-3BA1-Z | Siemens | Same frame, different encoder option — verify drive compatibility |
| 1PH8081-1SU02-3AA1-Z | Siemens | Variant with different shaft/flange configuration |
| 1FK7081-5AF71-1xx0 | Siemens | SIMOTICS S series — similar torque class, check mounting |
| HG-SR81BJ | Mitsubishi | Cross-brand equivalent — requires drive adapter |
| SGMJV-08ADA21 | Yaskawa | Sigma-7 series — similar power class, different protocol |
⚠ Disclaimer: Cross-brand replacements require engineering validation. Konmask.com recommends consulting your system integrator before substitution.
Why Choose the Original Model
- Native DRIVE-CLiQ integration — plug-and-play with SINAMICS drives, zero parameter mapping required
- Siemens TIA Portal compatibility — seamless commissioning via STARTER or Startdrive
- Proven reliability in 24/7 production environments with MTBF exceeding industry averages
- Full Siemens warranty & lifecycle support — spare parts and firmware updates guaranteed
- Consistent performance across temperature extremes and high-cycle applications
Typical Applications
- CNC machine tool spindle and feed axis drives
- Packaging machinery with high dynamic positioning requirements
- Printing and converting lines requiring precise speed synchronization
- Robotics and gantry systems integrated with SIMATIC PLC controllers
- Textile and winding machines with tension control loops
- Semiconductor and electronics assembly automation
System Compatibility
| Component | Compatible Models |
|---|---|
| Drive System | SINAMICS S120, S150, G120 (with encoder board) |
| PLC Controller | SIMATIC S7-1500, S7-300, S7-400 (via PROFINET/PROFIBUS) |
| Engineering Software | TIA Portal V15+, STARTER V5.4+, Startdrive |
| Safety Functions | STO, SS1, SLS (when paired with Safety Integrated drive) |
| Gearbox Interface | Standard IEC flange — compatible with Siemens SIMOGEAR and third-party gearboxes |
Selection Guide
Use the following criteria to confirm the 1PH8081-1SU02-3NA1-Z is the right choice for your application:
- Frame size SH 80 — suitable for compact machine designs with limited installation space
- Forced ventilation (U) — required for continuous duty cycles at full load; if natural cooling suffices, consider the 1PH8081-1SF0x variant
- Absolute encoder — eliminates homing routines after power loss; preferred for safety-critical or multi-axis systems
- Suffix -Z — indicates customer-specific options (e.g., special shaft, connector, or paint); confirm your exact Z-option code with Siemens or Konmask.com
- Drive matching — pair with SINAMICS S120 booksize or chassis units rated for the motor’s current demand
Not sure which model fits your system? Contact our engineers with your load profile and drive type for a free selection recommendation.
Quality Assurance & Sourcing
- ✅ Authorized & verified supply chain — sourced from Siemens-authorized distributors and certified secondary market channels
- ✅ Inspection before shipment — each unit undergoes visual, label, and functional verification
- ✅ Traceability — batch records and certificates of conformity available on request
- ✅ Anti-counterfeit measures — hologram labels, serial number verification, and original packaging checks
- ✅ Export compliance — all shipments comply with applicable export control regulations (EAR/ECCN)
How to Order
- Confirm your exact part number: 1PH8081-1SU02-3NA1-Z (including Z-option suffix details)
- Specify required quantity and delivery timeline
- Submit your inquiry via the Add to Cart button above, or email support@konmask.com
- Our team will confirm availability, lead time, and issue a formal quotation within 24 hours
- Payment via T/T, PayPal, or trade credit (approved accounts)
📦 Shipping: DHL / FedEx / UPS express worldwide. Standard lead time: 3–7 business days for in-stock items.
Replacement & Compatibility FAQ
Q: Can I use a 1PH8081-1SU02-3BA1-Z instead of the 3NA1 variant?
A: The primary difference lies in the encoder type. The 3NA1 uses an absolute encoder while 3BA1 uses an incremental encoder. Substitution is possible only if your SINAMICS drive and application support the alternative encoder interface.
Q: Is the 1PH8081-1SU02-3NA1-Z compatible with SINAMICS G120?
A: The G120 does not natively support DRIVE-CLiQ absolute encoders without an additional encoder evaluation board (SMC30/SMC20). Consult your drive configuration before ordering.
Q: What does the -Z suffix mean in the part number?
A: The -Z suffix indicates one or more factory-configured special options (e.g., special shaft end, IP rating upgrade, special paint). Always provide the full Z-option string when ordering to ensure exact replication.
Q: Do you supply new or refurbished units?
A: Konmask.com supplies both new original and professionally refurbished units. Condition is clearly stated on each product listing. Refurbished units include a 12-month warranty.
Q: Can Konmask.com help with cross-brand replacement selection?
A: Yes. Our engineering team can assist with cross-brand equivalent selection based on your torque, speed, encoder, and mechanical interface requirements. Contact us with your full system specifications.
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