Atlas Copco Motor Overhaul Kit GA30–45 Replacement – 2901195101

The 2901195101 is a motor overhaul kit designed for major servicing of the electric motor used in Atlas Copco GA30–45 compressors. It contains components required to restore proper motor operation, shaft alignment and sealing during an overhaul.

The official Atlas Copco listing gives a kit weight of 2.62 kg and identifies the product family as stationary oil-injected compressors.

Working Process

1. Electrical Input – Electrical power is supplied to the compressor motor.
2. Motor Rotation – The motor converts electrical energy into rotational mechanical power.
3. Bearing Support – Bearings support the motor shaft and maintain correct alignment.
4. Power Transmission – The rotating shaft drives the compressor element.
5. Lubrication & Sealing – Sealing components help control lubricant leakage around the motor/shaft assembly.
6. Component Wear – Continuous operation gradually wears bearings and other motor components.
7. Overhaul – During major service, worn components are removed and inspected.
8. Component Replacement – The applicable motor overhaul components are replaced using 2901195101.
9. Reassembly & Testing – The motor is reassembled and checked for smooth rotation, vibration, temperature and leakage.

Officially Listed Components

Atlas Copco lists these components within the 2901195101 assembly:

Main Functions

• Supports GA30–45 motor overhaul.
• Replaces important motor wear components.
• Helps maintain correct shaft alignment.
• Supports proper motor lubrication.
• Helps prevent leakage.
• Reduces the risk of motor vibration and bearing-related problems.
• Restores reliable compressor-motor performance.

Typical Failure Symptoms

A motor requiring overhaul may exhibit:

• Increased bearing noise.
• Excessive vibration.
• Elevated motor-bearing temperature.
• Lubricant leakage.
• Increased power consumption.
• Shaft misalignment.
• 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. Inspect the motor shaft, bearings and sealing surfaces.
7. Remove worn components.
8. Clean the relevant mounting surfaces.
9. Install the components supplied with 2901195101.
10. Ensure the oil nozzle and O-ring are correctly installed.
11. Check bearing seating and shaft alignment.
12. Reassemble the motor.
13. Verify smooth shaft rotation.
14. Reinstall and reconnect the motor.
15. Restart the compressor.
16. Check vibration, temperature, noise and leakage.
17. Confirm normal compressor performance.

Technical Summary

Recommended catalog title:
Atlas Copco 2901195101 – GA30–45 Motor Overhaul Kit for Oil-Injected Screw Compressors, 2901-1951-01.

Atlas Copco’s official listing confirms 2901195101 as “MOTOR OVERHAUL GA30-45”, with the GA compressor family and stationary oil-injected compressor application.

Important: 2901195100 and 2901195101 are closely related GA30–45 motor-overhaul references. The 2901195101 version has the official component listing above, so verify the compressor’s model, motor version and serial number before ordering.