AIR COMPRESSORS / OIL-FREE COMPRESSORS

Oil-free compressed air for processes where quality is non-negotiable

Oil-free compressors provide reliable compressed air supply without the risk of oil contamination. The ideal choice for industries with strict quality, product safety, and compliance requirements.

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AIR QUALITY

ISO 8573-1 Class 0

Certified oil-free compressed air for critical processes.

CONTAMINATION RISK

Minimal

No oil carryover into production and no product cleaning costs.

APPLICATION

Critical industries

Food, pharma, electronics, chemical, and healthcare processes.

SUPPORT

KOMP-R service

Commissioning, air quality validation, and long-term system optimization.

NEW

ISO Class 0IE5 + VSDup to 34% smaller footprint

Ultima™: next generation of oil-free screw compressors

Innovative dual-motor design, certified Class 0 air, and top-tier efficiency for processes where air quality is critical.

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How an oil-free compressor works

An oil-free compressor compresses air without direct contact with oil in the compression chamber. This eliminates contamination risk and ensures stable air quality for applications with strict cleanliness requirements.

Compression steps

Air intake
Air enters through the intake filter into the compressor element with no oil injected into the compression chamber.
Oil-free compression
Air is compressed in a dry-running or water-injected element, without contamination from lubricating oil.
Cooling and stabilization
After compression, the air is cooled, stabilized, and prepared for further treatment according to required quality class.
Air treatment
Drying and filtration follow to ensure stable air quality in line with process and regulatory requirements.

TECHNOLOGY COMPARISON

Oil-lubricated or oil-free compressors?

The right choice depends on air quality requirements, contamination risk costs, and process criticality. For sensitive applications, oil-free technology is usually the safest and most cost-effective long-term decision.

Oil-lubricated compressors

Lower initial investment
Widely used in industry
Requires high-quality downstream air treatment
Risk of oil traces in the process
Suitable where Class 0 is not required

A practical choice for general applications where potential oil carryover does not directly affect product quality or process safety.

Oil-free compressors

Certified clean air (ISO 8573-1 Class 0)
No oil contamination risk
Stable quality for critical processes
Easier compliance with regulations
Ideal for food, pharma, and electronics

The best option where air purity has direct impact on final product quality, safety, or regulatory compliance.

VSD speed control for compressors

On variable speed drive compressors (VSD), motor speed is not fixed but continuously adjusted to real compressed air demand. This means the compressor only produces as much air as needed at any given moment. As a result, unloaded running time is significantly reduced compared to fixed-speed compressors, where it is often a major source of unnecessary energy use.

Ultima™

55–160 kW

Ultima™ is the latest generation of oil-free screw compressors with a unique twin dry screw airend design, each stage driven by its own IE5 variable-speed motor.

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CompAir D15H–D37H oil-free screw compressor

D15H–D37H (RS)

15–37 kW

Oil-free screw compressors with water-injected compression for 100% clean ISO 8573-1 Class 0 air, available in fixed-speed and regulated (RS) versions.

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