Atlas Copco Motor Overhaul Kit GA30–45 Replacement – 2901161900

The Atlas Copco 2901161900 is a motor overhaul kit used during major maintenance of the electric drive motor in GA30–45 compressors. It provides key wear components needed to restore the motor’s shaft support, sealing and rotational performance.

The kit is documented with components such as circlips, bearings, roller bearing, O-ring and bushing.

Working Process

1. Motor Drive – The electric motor supplies rotational power to the compressor element.
2. Shaft Rotation – The motor shaft rotates continuously during compressor operation.
3. Bearing Support – Bearings maintain shaft alignment and support radial/axial loads.
4. Shaft Sealing – The sealing components help prevent lubricant leakage and contamination.
5. Wear – Continuous operation gradually wears bearings and sealing components.
6. Motor Overhaul – During major service, the motor is dismantled and inspected.
7. Component Replacement – Worn bearings, seals, O-rings, bushings and retaining components are replaced using the overhaul kit.
8. Reassembly – The motor is reassembled, aligned and checked for smooth rotation.
9. Testing – Vibration, temperature, noise and leakage are checked before returning the compressor to normal operation.

Main Functions

• Supports GA30–45 motor overhaul.
• Replaces worn motor bearings.
• Replaces shaft/sealing components.
• Maintains correct shaft alignment.
• Helps reduce vibration and mechanical wear.
• Helps prevent lubricant leakage.
• Restores reliable motor operation.

Typical Failure Symptoms

A motor requiring overhaul may show:

• Increased bearing noise.
• Excessive vibration.
• High motor-bearing temperature.
• Shaft-area leakage.
• Increased power consumption.
• Shaft misalignment.
• Reduced motor efficiency.

Kit Components

A documented Atlas Copco parts list includes components associated with 2901 1619 00, including:

Maintenance / Overhaul Procedure

1. Shut down the compressor and isolate the electrical supply.
2. Fully depressurize the compressor.
3. Allow the motor to cool.
4. Disconnect the motor as required by the service procedure.
5. Remove and dismantle the motor.
6. Inspect the shaft, bearing seats and sealing surfaces.
7. Remove worn bearings and sealing components.
8. Clean the relevant components and mounting surfaces.
9. Install the applicable components from 2901161900.
10. Check bearing seating and shaft alignment.
11. Reassemble the motor.
12. Verify smooth manual shaft rotation.
13. Reinstall the motor and reconnect all connections.
14. Restart the compressor.
15. Check vibration, bearing temperature, noise and leakage.

Technical Summary

Recommended catalog title:
Atlas Copco 2901161900 – GA30–45 Motor Overhaul Kit, 2901-1619-00.

Important: There are closely related references such as 2901161901 and 2901162000, so confirm the compressor model and serial number before ordering.