Overview
The Siemens 1LF7063-4AJ99-ZX31 is a compact general-purpose motor rated at 0.09kW (90W), part of Siemens’s SIMOTICS product line. This motor incorporates an integrated dry-break capacitor rated 18µF at 150V, making it suitable for direct-on-line or capacitor-start applications. The ZX31 variant indicates a specialized motor configuration optimized for industrial automation and pump-driven equipment.
Key Features
- Power Rating: 0.09kW (90W) for compact industrial duty cycles
- Integrated Capacitor: 18µF/150V dry-break (DB) capacitor reduces external component requirements
- Siemens Quality: Manufactured to IEC standards for reliable long-term operation
- Versatile Applications: Suitable for pump drives, HVAC systems, and general industrial equipment
- Used Condition: Fully functional unit, tested and available for immediate delivery
Technical Specifications
The following specifications are derived from Siemens motor family standards and the part nomenclature:
- Rated Power: 0.09kW (90W)
- Part Number: 1LF7063-4AJ99-ZX31
- Capacitor (Integrated): 18µF, 150V DC (dry-break)
- Motor Type: General-purpose AC motor
- Mounting Type: Check nameplate for frame size and flange specification
- Standard Compliance: IEC 60034 Low-Voltage Motors
- Condition: Used – fully functional and tested
Typical Applications
The 1LF7063-4AJ99-ZX31 is commonly deployed in:
- Pump Drives: Centrifugal and positive-displacement pump applications
- HVAC Systems: Fan and blower motor duty in commercial and residential equipment
- Pneumatic Systems: Air compressor and pneumatic device actuation
- Industrial Conveying: Light-duty conveyor systems and material-handling equipment
- General Factory Automation: Capacitor-start applications in manufacturing environments
Compatibility & Replacements
When sourcing replacement motors or evaluating compatibility with the 1LF7063-4AJ99-ZX31, verify the following:
- Shaft Diameter & Length: Confirm mechanical fit with existing pulleys, couplings, or direct-load connections
- Capacitor Specifications: The integrated 18µF/150V capacitor is essential; external capacitor ratings must match to avoid performance loss
- Flange & Mounting: Inspect the motor frame size and mounting configuration (feet vs. flange) before ordering replacement units
- Voltage & Frequency: Verify that replacement motors operate at the same supply voltage and frequency as your installation
- Nameplate Review: Always cross-reference the complete nameplate data (full electrical and mechanical specifications) before purchasing a replacement
For direct OEM replacements or alternative Siemens models in the 0.09kW range, consult with authorized Siemens distributors or contact your system integrator to ensure mechanical and electrical compatibility.






















