The AQ37-55 air compressors 1616724880=1616724890 air end leverages Atlas Copco’s pioneering water-injected screw technology. Unlike traditional oil-lubricated compressors, this design uses water to lubricate, seal, and cool the compression process. The direct contact between the water and the rotors facilitates highly efficient heat removal, leading to a near-isothermal compression process. This means the air is compressed at much lower temperatures, which significantly enhances energy efficiency and extends the lifespan of the components.

The air end features polymer ceramic rotors with optimized profiles, supported by water-lubricated, grease-free bearings. This innovative approach completely eliminates the risk of oil contaminating the compressed air, providing certified Class 0 oil-free air. This level of purity is non-negotiable for sensitive applications where even the slightest oil trace could lead to costly product spoilage or equipment damage.
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Technical Prowess and Key Benefits
The design and manufacturing of the AQ37-55 air compressors 1616724880=1616724890 Air End emphasize robustness and efficiency. It incorporates an IP55 induction motor, flange-mounted for perfect alignment, and a direct-driven arrangement that contributes to superior energy efficiency. Its ability to operate at low temperatures enhances reliability and contributes to its long service life.
Key Features:
- Water-Lubricated, Grease-Free Bearings: Ensures 100% oil-free compression with no need for grease.
- Near-Isothermal Compression: Achieves high energy efficiency through optimal heat removal by water.
- Polymer Ceramic Rotors: Designed for high efficiency and extended lifespan.
- In-House Design and Manufacturing: Guarantees quality and performance consistency.
- Robust Construction: Built for continuous, heavy-duty industrial operation.
Benefits at a Glance:
- Absolute Air Purity: Delivers certified Class 0 oil-free air, crucial for sensitive applications.
- Enhanced Energy Efficiency: Reduces operational costs through lower compression temperatures and efficient design, with VSD models offering up to 35% energy savings by adapting to air demand.
- Reduced Environmental Impact: Eliminates oil disposal concerns and minimizes carbon footprint.
- Lower Maintenance Costs: Extends component life and removes the need for oil-related filter replacements and condensate treatment.
- Quiet Operation: Integrated into sound-insulated canopies, making it suitable for various work environments without a dedicated compressor room.

Technical Parameters
The AQ37-55 Air End delivers robust performance tailored for demanding industrial needs.
Specification | Value |
Lubrication Style | Water-injected, Oil-free |
Working Pressure (max) | 13 bar |
Installed Motor Power | 37 kW – 55 kW |
Capacity FAD (for AQ37-55 range) | 72.6 l/s – 152.4 l/s (approx.) |
Cooling System | Water Cooling (common for AQ series, some variants air-cooled) |
Air Purity Certification | ISO 8573-1 Class 0 |
Product Compatibility
The Atlas Copco AQ37-55 air compressors Air End is integral to the Atlas Copco AQ series of water-injected oil-free screw compressors. This air end is specifically designed for seamless integration within the AQ37 to AQ55 range, providing optimal performance.
Compressor Model | Series |
AQ37 | AQ Water-injected Oil-Free Screw |
AQ45 | AQ Water-injected Oil-Free Screw |
AQ55 | AQ Water-injected Oil-Free Screw |

User’s Perspective
“For our beverage bottling facility, the quality of compressed air directly impacts the taste and safety of our products,” explains Sarah M., Production Manager. “We previously used oil-lubricated compressors, which always carried the inherent risk of oil carryover. Switching to an Atlas Copco AQ series compressor with the AQ37-55 air compressors Air End transformed our operations.
“We now have complete peace of mind knowing our air is 100% oil-free. This eliminates the need for expensive downstream filtration and significantly reduces our waste treatment costs. Furthermore, the energy efficiency of the water-lubricated system is truly remarkable; our energy bills have seen a noticeable decrease. The quiet operation is an added bonus, contributing to a better working environment for our team. This air end is a robust and reliable component that has consistently delivered exceptional performance, allowing us to maintain the highest hygiene standards and operational efficiency.”
Frequently Asked Questions
What does “Class 0 oil-free air” mean, and why is it important?
“Class 0” is the most stringent air purity certification under ISO 8573-1, meaning absolutely no oil aerosols, vapors, or liquid oil can be detected in the compressed air. This is crucial for industries where oil contamination can ruin products, pose health risks, or cause downtime, such as food and beverage, pharmaceuticals, and electronics.
How does water lubrication compare to oil lubrication in terms of energy efficiency?
Water’s superior cooling capabilities allow for a “near-isothermal” compression process, meaning the air is compressed at a nearly constant, lower temperature. This significantly reduces the energy required for compression compared to oil-lubricated systems, which often run hotter and require more energy to achieve the same output.
Are water-lubricated compressors more prone to corrosion?
Atlas Copco AQ series compressors are specifically designed with corrosion-resistant materials, such as stainless steel for the water separator vessel and polymer ceramic rotors. This minimizes the risk of corrosion and ensures a long operational life for the air end and system components.
What are the main maintenance considerations for the AQ37-55 air compressors Air End?
Maintenance for a water-lubricated air end typically focuses on ensuring a continuous supply of clean water (often through integrated water filters and reverse osmosis systems) and regular checks of other air compressor parts. The absence of oil means no oil filter replacements or oil changes, simplifying maintenance.

More Air End Parts
Part Number | Part Name | Part-Number |
6996012103 | AIREND, VMX 22R. | 6996-0121-03 |
6996012104 | AIREND, VMX 45RD | 6996-0121-04 |
6996012105 | AIREND, VMX 75RD | 6996-0121-05 |
6996012106 | SEALING KIT, AIREND, 22 R | 6996-0121-06 |
6996012107 | SEALING KIT, AIREND, 45 RD. | 6996-0121-07 |
6996012108 | SEALING KIT, AIREND, 137 R | 6996-0121-08 |
6996012109 | SEALING KIT, AIREND, 110 RD | 6996-0121-09 |
6996012110 | SEALING KIT, AIREND, 337 R | 6996-0121-10 |
6996012210 | AIREND, FS26 | 6996-0122-10 |
6996012248 | AIREND, FS14 | 6996-0122-48 |
6996012477 | FLANGE, AIREND | 6996-0124-77 |
6996012677 | AIREND OUTLET | 6996-0126-77 |
6996012678 | AIREND, VMX 110RD | 6996-0126-78 |
6996012701 | SEALING KIT, AIREND, 75 RD. | 6996-0127-01 |
6996012757 | GASKET, AIREND OUTLET | 6996-0127-57 |
6996012857 | AIREND, VMX 250RD | 6996-0128-57 |
6996012895 | SEALING KIT, AIREND | 6996-0128-95 |
6996012935 | REFURBISH KIT, AIREND, 22 R | 6996-0129-35 |
6996013193 | REFURBISH KIT, AIREND, 110RD. | 6996-0131-93 |
6996013205 | REFURBISH KIT, AIREND, 237 R. | 6996-0132-05 |
6996021196 | SEALING KIT, AIREND, 160 RD. | 6996-0211-96 |
1639000036 | INLET PIPE AIREND | 1639-0000-36 |
2014501255 | AIREND, FSS255170S | 2014-5012-55 |
2014501265 | AIREND, QUINCY | 2014-5012-65 |
2014501570 | AIREND, FSS204102S | 2014-5015-70 |
2014502896 | AIREND, FSS204123S | 2014-5028-96 |
1627424637 | DOOR PANEL AIREND-E | 1627-4246-37 |
1627424998 | AIREND SUPPORT | 1627-4249-98 |
1627425475 | AIREND SUPPORT | 1627-4254-75 |
1627425695 | airend support | 1627-4256-95 |
1627434770 | AIREND OUTLET TUBE | 1627-4347-70 |
1627434772 | AIREND OUTLET TUBE | 1627-4347-72 |
1627434780 | AIREND DISCHARGE TUBE | 1627-4347-80 |
1627434781 | AIREND DISCHARGE TUBE | 1627-4347-81 |
1627434782 | AIREND DISCHARGE TUBE | 1627-4347-82 |
1627434783 | AIREND DISCHARGE TUBE | 1627-4347-83 |
1627456122 | AIREND KIT | 1627-4561-22 |
1627456145 | AIREND KIT | 1627-4561-45 |
1627456178 | AIREND KIT | 1627-4561-78 |
1627456179 | AIREND | 1627-4561-79 |
1627456181 | AIREND | 1627-4561-81 |
1627456195 | AIREND | 1627-4561-95 |
1627456198 | AIREND KIT | 1627-4561-98 |
1627456203 | AIREND | 1627-4562-03 |
1627456205 | AIREND KIT | 1627-4562-05 |
1627456206 | AIREND KIT | 1627-4562-06 |
1627456226 | AIREND KIT | 1627-4562-26 |
1627456235 | AIREND, FSS204098C | 1627-4562-35 |
1627456237 | AIREND KIT | 1627-4562-37 |
1627456241 | AIREND KIT | 1627-4562-41 |
Invest in Uncompromising Purity and Performance
The Atlas Copco AQ37-55 air compressors Air End (1616724880=1616724890) embodies Atlas Copco’s commitment to innovation, sustainability, and superior performance in compressed air technology. By providing 100% oil-free air and exceptional energy efficiency, this air end protects your products, reduces operational costs, and minimizes environmental impact. It is the ideal choice for any industry demanding the highest standards of air purity.
Elevate your production standards and secure reliable, contaminant-free compressed air for your critical applications.
Contact your authorized Atlas Copco dealer —Seadweer today to learn more and acquire the AQ37-55 air compressors Air End for your system!
Sarah M –
Genuine Atlas Copco air end!
This air end is a robust and reliable component that has consistently delivered exceptional performance, allowing us to maintain the highest hygiene standards and operational efficiency.