Atlas Copco Element Mounting Kit Replacement – 2901146000

The Atlas Copco 2901146000 is an Element Mounting Kit used for servicing and correctly mounting the screw compressor element in applicable oil-injected screw compressors. Atlas Copco’s official catalog identifies it specifically as an element-mounting kit for oil-injected screw compressors.

The compressor element is the main rotating assembly responsible for compressing air. Proper mounting and alignment are essential for maintaining correct rotor clearance, reducing vibration and ensuring efficient compression.

Working Process

1. Air Intake – Atmospheric air enters the compressor through the inlet system.
2. Oil Injection – Oil is introduced into the compression chamber for cooling, sealing and lubrication.
3. Screw Element Rotation – The male and female rotors rotate and progressively compress the air.
4. Element Support – The mounting components keep the compressor element correctly positioned.
5. Alignment – Correct mounting maintains proper alignment between the element and drive system.
6. Sealing – Mounting/sealing components help prevent air and oil leakage.
7. Compression – The air-oil mixture reaches the required pressure.
8. Air/Oil Separation – The compressed mixture proceeds to the separator system.
9. Continuous Operation – Correct element mounting supports stable compressor operation.

Main Functions

• Provides components required for compressor-element mounting.
• Maintains proper element positioning and alignment.
• Supports reliable rotor operation.
• Helps maintain proper sealing.
• Reduces the risk of air/oil leakage.
• Supports efficient compression.
• Helps reduce vibration caused by incorrect mounting.

Why Element Mounting Is Important

The screw element operates at high rotational speed and with very small internal clearances. Incorrect mounting or alignment can lead to:

• Rotor contact.
• Excessive vibration.
• Bearing loading.
• Increased operating temperature.
• Reduced compression efficiency.
• Premature element damage.

Therefore, the mounting kit is important when replacing or overhauling the compressor element.

Possible Failure Symptoms

Incorrect or worn mounting components may contribute to:

• Excessive vibration.
• Abnormal compressor noise.
• Oil leakage.
• Air leakage.
• Reduced compressor capacity.
• Increased power consumption.
• High discharge temperature.
• Premature wear of the compressor element.

Maintenance / Element Replacement Process

1. Shut down the compressor according to the applicable Atlas Copco service procedure.
2. Isolate the electrical supply.
3. Fully depressurize the compressor.
4. Allow the compressor to cool.
5. Drain/isolate the applicable oil circuit.
6. Remove the required connections and access components.
7. Remove the existing compressor element according to the service manual.
8. Inspect mounting surfaces and drive components.
9. Clean the mating surfaces.
10. Install the replacement mounting components from 2901146000.
11. Position the compressor element correctly.
12. Check shaft and element alignment.
13. Tighten the mounting components using the specified Atlas Copco procedure and torque values.
14. Reconnect the oil and air circuits.
15. Restore the compressor to service.
16. Start the compressor and check for abnormal vibration, noise, air leakage and oil leakage.
17. Verify normal pressure and temperature.

Technical Summary

The part number is also independently listed as “ELEMENT MOUNTING KIT” in Atlas Copco compressor-parts catalogs.

Recommended catalog title:
Atlas Copco 2901146000 – Element Mounting Kit for Oil-Injected Screw Compressors, 2901-1460-00.

Compatibility note: For an exact machine match, Atlas Copco recommends checking the machine serial number/Parts Book because configurations can vary between compressor models.

Disclaimer: All manufacturer names, trademarks, model numbers, and part numbers are used solely for identification and compatibility purposes. Our products are high-quality aftermarket replacement products and are not manufactured, sponsored, endorsed, or authorized by the original equipment manufacturer (OEM). All trademarks remain the property of their respective owners.