Atlas Copco Screw Air Compressor Motor Replacement 1092090381
Atlas Copco Screw Air Compressor Motor 1092090381 – 55 kW, 400 V, 50 Hz OEM replacement motor for oil-injected screw compressors. High torque stability, precise balancing, and built for continuous industrial duty.
| Application |
Screw Air Compressor |
|---|---|
| Material |
Aluminum ,Metal ,Plastic ,Stainless Steel |
This is an OEM-grade drive motor (part number 1092090381) for Atlas Copco oil-injected screw air compressors, rated at 55 kW, 400 V, 50 Hz.
Intended as a direct replacement for the factory original unit, it delivers reliable performance under continuous-duty conditions, with solid torque support, precise balancing, and strong thermal durability.
Based on Atlas Copco’s published data:
- Power Rating: 55 kW
- Voltage / Frequency: 400 V, 50 Hz
- Intended Use: Oil-injected screw compressors
- Weight (approx): 470 kg
These specifications make it suitable for mid-to-large size compressor units that require a robust motor to handle the mechanical and thermal demands of screw compression systems.
Core Advantages & Technical Features
- Robust Construction & Longevity
Built with high-grade stator and rotor materials, the motor resists thermal strain and mechanical stress. Its design ensures durability in demanding industrial environments. - Torque Stability under Load
Engineered to support large starting torque and maintain smooth operation under varying load demands, reducing vibration and mechanical shock. - Thermal Management
Optimized cooling channels and fan design help dissipate heat effectively, extending insulation life and improving reliability during continuous operation. - Precision Balancing
The motor's rotor is dynamically balanced to minimize vibration, noise, and bearing stress—important for maintaining alignment with the driven compressor air end. - Direct OEM Fit
As an official Atlas Copco spare part (Motor Assembly 1092090381) listed in their parts catalog, it matches mounting dimensions and electrical interfaces of the original unit. - High Overload & Starting Capability
Designed to handle transient loads and start-up conditions typical in compressor systems without premature wear.
Typical Applications & Fitment
- Best suited for oil-injected screw compressor systems in industrial settings such as factories, workshops, pneumatic networks, and process plants.
- Compatible with Atlas Copco’s GA/GA+ series compressors where the original motor spec is 55 kW / 400 V / 50 Hz.
- Can replace the factory motor directly, assuming the coupling, mounting, and voltage system match.
If your compressor nameplate or technical data matches these specs, this motor is intended as a plug-and-play solution.
Manufacturing, Inspection & Quality Assurance
- Material & Machining: High-quality stator laminations and rotor assemblies, precision CNC machining, and tight tolerances.
- Winding & Insulation: Pure copper windings with Class F/H insulation and varnish impregnation for resistance to heat and moisture.
- Dynamic Balance & Vibration Testing: Rotor assemblies are balanced at operational speeds to reduce mechanical noise and prolong bearing life.
- Performance Tests: Each motor unit undergoes no-load and full-load tests, temperature rise testing, insulation resistance checks, and endurance runs to validate reliability.
These production controls ensure each unit performs to or exceeds Atlas Copco’s standards for drive motors.
Suggested Maintenance & Operation Tips
To maintain peak performance and extend motor life:
- Ensure adequate cooling air flow around the motor housing; avoid dust, debris, and blockage.
- Use stable, correct voltage and frequency supply; avoid voltage drops or imbalances.
- Monitor bearing temperature, vibration levels, and noise regularly for early fault detection.
- Perform insulation resistance tests periodically to detect insulation degradation.
- Align the motor shaft and compressor coupling precisely to reduce mechanical stress.
With regular preventive maintenance, this motor will provide dependable, long-term service.
Related Atlas Copco Motor Models
KINTON supplies a comprehensive range of replacement motors for Atlas Copco compressors, including:
- 1080421404 – Standard drive motor for GA series
- 1080421501 – Energy-saving configuration for medium compressors
- 1080421602 – Heavy-duty motor for large industrial units
- 1080421703 – Low-speed torque-focused motor
- 1080424254 – High-speed, VFD-compatible model with enhanced insulation
- 1080424301 – Ultra-efficient model for continuous-duty compressors
These models cover a wide range of power ratings and compressor capacities to meet different application needs.
Why Choose KINTON Air Compressor Kit
KINTON specializes in high-quality OEM replacement parts for Atlas Copco screw air compressors, including air ends, motors, filters, valves, and control components.
With ISO9001-certified manufacturing, advanced test facilities, and a strong commitment to customer satisfaction, KINTON products are trusted by global distributors and service companies.
We offer reliable supply, competitive pricing, and responsive technical support — helping you keep your Atlas Copco compressor systems operating at peak performance.
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