Atlas Copco Motor Overhaul Kit GA11+22 Replacement – 2901195200

The Atlas Copco 2901195200 Motor Overhaul Kit is a comprehensive service kit used to overhaul the electric motor assembly of applicable GA11+ and GA22+ oil-injected screw compressors. Atlas Copco lists it as a genuine service kit intended to simplify motor maintenance by supplying the required overhaul components as one package.

The motor provides rotational power to the compressor element. During an overhaul, worn bearings, seals, retaining components and other motor-service parts are replaced to restore smooth rotation, correct shaft positioning and reliable power transmission.

Working Process

1. Electrical Power – Electrical energy is supplied to the compressor motor.
2. Motor Rotation – The motor converts electrical energy into rotational mechanical energy.
3. Bearing Support – Motor bearings support the rotating shaft and maintain alignment.
4. Power Transmission – The motor shaft transfers torque to the compressor element.
5. Sealing – Motor seals prevent lubricant or contaminants from passing through shaft interfaces.
6. Cooling – The motor fan helps remove heat generated during operation.
7. Continuous Operation – The motor continuously drives the compressor element while compressed air is being produced.

Main Kit Components

A GA parts book identifies components included with 2901 1952 00, including:

Main Functions

• Restores motor mechanical condition.
• Replaces worn motor bearings.
• Replaces shaft sealing components.
• Maintains correct shaft alignment.
• Supports smooth motor rotation.
• Helps reduce vibration and bearing noise.
• Supports effective motor cooling.
• Restores reliable power transmission to the compressor element.

Possible Failure Symptoms

A motor requiring overhaul may show:

• Abnormal bearing noise.
• Excessive vibration.
• Motor overheating.
• Shaft movement or misalignment.
• Seal leakage.
• Increased motor temperature.
• Reduced motor efficiency.
• Fan damage or poor cooling.
• Unexpected compressor trips.

Motor 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 and compressor to cool.
5. Disconnect the motor from the relevant compressor components.
6. Remove the motor assembly as specified in the service documentation.
7. Inspect the shaft, bearing seats, fan and housing.
8. Remove worn bearings, seals and retaining components.
9. Clean the motor components and mounting surfaces.
10. Install the replacement components from 2901195200.
11. Install the bearings correctly.
12. Fit the shaft seal, bushing and circlips.
13. Install the motor fan.
14. Check shaft rotation and alignment.
15. Reassemble the motor.
16. Reconnect the motor to the compressor.
17. Restore electrical connections.
18. Start the compressor and check motor rotation.
19. Monitor vibration, temperature and abnormal noise.
20. Verify normal compressor operation.

Technical Summary

Recommended catalog title:
Atlas Copco 2901195200 – GA11+22 Motor Overhaul Kit for Oil-Injected Screw Compressors, 2901-1952-00.

Atlas Copco’s official Web Shop confirms the part number, GA11+22 Motor Overhaul Kit description, oil-injected screw compressor application and 1.27 kg weight.

Compatibility note: 2901195200 is for GA11+22, while the closely related 2901195300 is listed for GA26+–30. Always verify the machine serial number before ordering; Atlas Copco recommends using the machine serial number to access the machine-specific Spare Parts Book.