BERGER USM4-14-3-20IB4-9LG – Brushless AC Servo Motor | USM4 Series Platform
Engineering Background
BERGER Lahr (now part of the Schneider Electric / IMS motion control lineage) engineered the USM4 series as a high-performance brushless AC servo motor family for demanding industrial positioning and speed-control applications. The USM4-14-3-20IB4-9LG represents a fully integrated drive unit combining a permanent-magnet synchronous motor with an integrated feedback encoder, designed to pair directly with compatible BERGER servo amplifiers and motion controllers.
Product Positioning
This unit is purpose-built for procurement engineers sourcing precision motion components for machine tool retrofits, packaging lines, semiconductor handling, and general factory automation. Konmask.com supplies verified OEM and surplus stock with full traceability documentation available on request.
Complete Technical Specifications
| Part Number | USM4-14-3-20IB4-9LG |
| Manufacturer | BERGER Lahr (Schneider Electric lineage) |
| Series / Platform | USM4 |
| Motor Type | Brushless AC Permanent-Magnet Synchronous Servo Motor |
| Country of Origin | Germany (DE) |
| Feedback Device | Integrated encoder (type per suffix: IB4) |
| Shaft Configuration | Per suffix code (9LG – consult datasheet for exact keyway/flange) |
| Protection Class | IP65 (standard USM4 series; verify per nameplate) |
| Insulation Class | F (155 °C) |
| Cooling Method | Natural convection (self-cooled) |
| Weight (approx.) | 300 g |
| Compatible Amplifiers | BERGER Lahr DIAX / WDP series servo drives |
| Connector Interface | Per suffix (IB4 = industrial bayonet encoder connector) |
Note: Full electrical parameters (rated torque, speed, voltage, current) are available in the BERGER USM4 series datasheet. Contact Konmask for documentation.
Proven Application Environments
- CNC machine tool axis drives (X/Y/Z positioning)
- Packaging and labeling machinery (high-cycle indexing)
- Semiconductor wafer handling and pick-and-place systems
- Textile and printing machine web tension control
- Robotics joint actuation (SCARA / Cartesian)
- Medical device manufacturing equipment
- Conveyor and material handling automation
Engineering Advantages
- Brushless design – Zero brush wear, minimal maintenance, extended service life in continuous-duty cycles
- Integrated encoder – Eliminates external feedback wiring complexity; reduces commissioning time
- High torque density – Permanent-magnet rotor delivers superior torque-to-inertia ratio for fast dynamic response
- German engineering heritage – BERGER Lahr precision manufacturing standards; tight dimensional tolerances
- Direct amplifier compatibility – Plug-and-play with BERGER DIAX/WDP drives; no parameter mapping required
- Compact USM4 frame – Space-efficient footprint for machine retrofits with limited cabinet real estate
System Architecture & Signal Flow
The USM4-14-3-20IB4-9LG operates within a closed-loop servo architecture:
- Motion Controller (PLC / CNC) → issues position/velocity/torque setpoints via fieldbus or analog ±10 V reference
- BERGER Servo Amplifier (DIAX / WDP) → receives setpoints, closes current loop, outputs 3-phase PWM power
- USM4-14-3-20IB4-9LG Motor → converts electrical power to mechanical torque at the shaft
- Integrated Encoder (IB4) → feeds back position/speed data to amplifier at high resolution for tight loop closure
- Load / Mechanical System → ballscrew, rack-and-pinion, or direct-drive coupling
Sourcing & Quality Verification
- Stock condition: New OEM or tested surplus (condition confirmed at time of order)
- Traceability: Serial number and date code documentation available on request
- Inspection: All units inspected for physical integrity prior to shipment
- Warranty: 90-day functional warranty; extended warranty available — contact sales
- Export compliance: ECCN classification and export documentation provided for international orders
- Counterfeit prevention: Sourced exclusively from verified industrial channels; no gray-market supply
Procurement Process
- Submit RFQ via Konmask.com/pages/contact or email support@konmask.com
- Receive stock confirmation, lead time, and formal quotation within 1 business day
- Issue PO — we accept T/T wire transfer, PayPal, and major credit cards
- Unit ships with packing list, inspection report, and tracking number
- Post-delivery technical support available via email or WhatsApp
Technical FAQ
Q: Is the USM4-14-3-20IB4-9LG compatible with non-BERGER servo drives?
A: The motor’s electrical characteristics (back-EMF constant, pole count, encoder protocol) must be matched to the drive. Third-party compatibility is possible with proper parameter configuration — contact our engineering team for guidance.
Q: What does the suffix “IB4-9LG” indicate?
A: The suffix encodes feedback type (IB4 = integrated encoder variant 4), shaft/flange configuration (9), and connector/cable option (LG). Refer to the BERGER USM4 ordering code matrix for full decoding.
Q: Can you supply the matching BERGER servo amplifier?
A: Yes. Konmask stocks a range of BERGER Lahr DIAX and WDP series amplifiers. Specify your axis count and bus interface when requesting a quote.
Q: What is the typical lead time?
A: In-stock units ship within 2–3 business days. For out-of-stock items, lead time is 2–6 weeks depending on sourcing channel.
Q: Do you provide a test report?
A: Yes, a functional test report is available for surplus units. New OEM units ship with manufacturer documentation.
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