Atlas Copco Motor Bearing Kit GA11–22 Replacement – 2901071600

The Atlas Copco 2901071600 Motor Bearing Kit is used during motor maintenance to replace worn bearings in applicable GA11–22 compressors. The bearings support the electric motor shaft, maintain correct shaft alignment and allow smooth rotation while the motor transfers power to the compressor element.

Working Process

1. Electrical Power – The motor receives electrical power from the compressor system.
2. Motor Rotation – Electrical energy is converted into rotational mechanical energy.
3. Bearing Support – Motor bearings support the rotating shaft and maintain its position.
4. Power Transmission – The motor shaft transfers torque to the compressor element.
5. Continuous Operation – Bearings operate continuously under radial and axial loads.
6. Wear – Over time, bearing surfaces can deteriorate due to operating hours, temperature and lubrication conditions.
7. Bearing Replacement – During scheduled overhaul, worn bearings are removed and replaced using the 2901071600 kit.
8. Alignment & Testing – The shaft is checked for correct alignment and smooth rotation before the compressor is returned to service.

Main Functions

• Replaces worn motor bearings.
• Supports correct motor-shaft alignment.
• Reduces shaft friction.
• Helps reduce vibration and operating noise.
• Supports smooth motor rotation.
• Helps protect the motor and compressor element.
• Restores motor operating reliability.

Typical Failure Symptoms

Worn motor bearings may cause:

• Increased motor noise.
• Excessive vibration.
• Elevated bearing temperature.
• Rough shaft rotation.
• Increased motor power consumption.
• Shaft misalignment.
• Premature motor or compressor-element wear.

Maintenance / Replacement Procedure

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate and lock out the electrical supply.
3. Depressurize the compressor.
4. Allow the motor to cool.
5. Remove/access the motor assembly as required.
6. Inspect the shaft, bearing seats and surrounding components.
7. Remove the old bearings.
8. Clean the bearing mounting surfaces.
9. Install the replacement bearings supplied with 2901071600 using the correct installation method.
10. Verify bearing seating and shaft alignment.
11. Check that the shaft rotates freely.
12. Reassemble the motor.
13. Reinstall and reconnect the motor.
14. Restart the compressor.
15. Monitor vibration, noise and bearing temperature.
16. Confirm normal compressor operation.

Technical Summary

Recommended catalog title:
Atlas Copco 2901071600 – GA11–22 Motor Bearing Kit, 2901-0716-00.

A parts catalog also lists closely related references 2901071601, 2901071602, 2901071603 and 2901071610 as bearing-kit variants, so the exact compressor/motor configuration should be checked before ordering.

Atlas Copco recommends checking the machine’s serial number in Power Connect/Spare Parts Book for exact compatibility.