1092090481 75kw Atlas Copco Compressor Parts Motor Replacement
The Atlas Copco Motor Assy 1092090481 is a 75 kW, 400 V, 50 Hz electric drive unit built for screw air compressors. As an OEM motor assembly, it’s engineered to deliver stable torque, high efficiency, and continuous-duty reliability for medium to large industrial compressor systems.
| Application |
Screw Air Compressor |
|---|---|
| Material |
Aluminum ,Metal ,Plastic ,Stainless Steel |
The Atlas Copco Screw Air Compressor Motor 1092090481 is a precision-engineered drive assembly developed for high-efficiency, oil-injected screw compressor systems. Built to the same exacting standards as Atlas Copco’s original production units, this 75 kW motor ensures consistent output, smooth operation, and long-term reliability under heavy industrial workloads. Its robust structure, superior cooling design, and optimized torque performance make it a dependable choice for operators seeking OEM-grade performance and energy efficiency in continuous-duty environments.
From Atlas Copco’s parts listing:
- Rated Power: 75 kW
- Voltage / Frequency: 400 V, 50 Hz
- Designation: “Motor Assy” in the official spare-parts catalog
These official specifications help confirm that this is not a generic motor, but an exact replacement for Atlas Copco compressor units requiring this power class.
Core Technical Features & Benefits
- Power & Load Capability
At 75 kW, this motor handles significant mechanical load and supports sustained compressor demands. It is suited for heavy-duty operation where frequent start/stop cycles or load variations occur. - Torque Stability & Performance
The motor is designed to provide smooth, stable torque in varying load conditions—critical for maintaining consistent compressor speed and minimizing mechanical stress on couplings and bearings. - Thermal Management & Cooling
Advanced internal ventilation and fan design help dissipate heat effectively, protecting the windings and insulation under continuous operation. This contributes to long-term durability. - Precision Balance & Low Vibration
High-speed dynamic balancing ensures minimal vibration and noise when rotating under full load, preserving mechanical alignment and reducing wear on connected components. - OEM Integration & Fitment
Because it's listed in the official Atlas Copco catalog as a motor assembly, this unit is dimensionally compatible with the original motor mounts, shaft coupling, and electrical interfaces—facilitating a plug-in replacement with minimal modification.
Application & Typical Use Cases
This motor is typically installed in Atlas Copco screw compressors used in:
- Manufacturing plants and machining centers
- Large pneumatic systems in workshops or factories
- Industrial process lines requiring continuous compressed air supply
- Facilities needing a robust replacement motor for mid-to-high capacity compressor units
If your compressor’s nameplate or existing motor matches 75 kW / 400 V / 50 Hz, then this 1092090481 motor is a suitable OEM replacement.
Manufacture, Quality, & Testing Procedures
- Material & Build Quality: High-grade steel laminations, precise rotor/stator manufacturing, tight machining tolerances.
- Winding & Insulation: High-purity copper windings with robust insulation suitable for industrial environments.
- Balancing & Vibration Testing: Each rotor assembly dynamically balanced to reduce vibration at rated speed.
- Performance Testing: Units undergo no-load and full-load runs, temperature-rise testing, insulation resistance checks, and endurance trials to ensure durability before shipping.
These procedures help guarantee that each motor meets or exceeds the durability and performance standards of original equipment.
Maintenance Tips for Best Performance
- Keep the motor’s ventilation paths clean and free of dust or obstructions.
- Ensure supply voltage is stable and balanced across phases.
- Monitor bearing temperature and vibration to catch early signs of wear.
- Periodically test the insulation resistance of windings.
- Re-align coupling and shaft to avoid misalignment stress.
Proper preventive maintenance will support long service life and stable performance.
Why Choose Our 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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