Atlas Copco Motor Overhaul Kit GA30–45 Replacement – 2901195100

The Atlas Copco 2901195100 is a motor overhaul kit used during major maintenance of the electric motor in GA30–45 compressors. It provides the service components required to restore proper motor shaft support, sealing, alignment and reliable rotation.

The part is also listed as 2901-1951-00, and aftermarket references describe this version as a motor overhaul kit without fan.

Working Process

1. Electrical Power – The electric motor receives power from the compressor’s electrical system.
2. Motor Rotation – Electrical energy is converted into rotational mechanical power.
3. Bearing Support – Motor bearings support the rotating shaft and maintain alignment.
4. Power Transmission – The motor shaft transfers rotational torque to the compressor element.
5. Shaft Sealing – Sealing components help prevent lubricant leakage around the shaft.
6. Wear – Continuous operation gradually wears bearings and sealing components.
7. Motor Overhaul – During major maintenance, worn components are removed and inspected.
8. Component Replacement – Applicable bearings, seals and other wear components are replaced using the overhaul kit.
9. Reassembly & Testing – The motor is reassembled and checked for smooth rotation, vibration, temperature and leakage.

Main Functions

• Supports GA30–45 motor overhaul.
• Replaces worn motor wear components.
• Restores proper shaft support and alignment.
• Helps reduce motor vibration and noise.
• Helps prevent shaft-area lubricant leakage.
• Restores reliable motor operation.
• Extends motor service life.

Typical Failure Symptoms

A motor requiring overhaul may show:

• Increased bearing noise.
• Excessive vibration.
• High bearing temperature.
• Shaft-area leakage.
• Increased motor power consumption.
• Poor shaft alignment.
• Reduced compressor efficiency.

Maintenance / Overhaul Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate and lock out the electrical supply.
3. Fully depressurize the compressor.
4. Allow the motor to cool.
5. Disconnect and remove the motor as required.
6. Dismantle the motor and inspect the shaft, bearings and sealing surfaces.
7. Remove worn components.
8. Clean all relevant mounting surfaces.
9. Install the applicable components from 2901195100.
10. Check bearing seating and shaft alignment.
11. Reassemble the motor.
12. Verify smooth and free shaft rotation.
13. Reinstall and reconnect the motor.
14. Restart the compressor.
15. Check vibration, temperature, noise and leakage.
16. Confirm normal compressor performance.

Technical Summary

Recommended catalog title:
Atlas Copco 2901195100 – GA30–45 Motor Overhaul Kit, 2901-1951-00, Without Fan.

A current spare-parts listing identifies 2901195100 as Motor Overhaul GA30, while an installation/service document specifically lists it as “Motor Overhaul GA 30-45+” for the 24,000-hour maintenance visit.

Important: There is also 2901195101, a closely related GA30 motor-overhaul reference. Verify the compressor model, motor version and serial number before ordering.