Ultima U Series (90 to 160 kW)
Ultima Series
Ultima U55 – 160 kW
The Ultima oil-free screw air compressor series utilizes high efficiency low/high pressure dry screw airends. Each airend is individually driven by a motor that operates at 97% efficiency. The Ultima provides up to 70% turndown, delivers low off-load power consumption, maintains a 63-69 dBA noise performance and provides superior heat recovery.
Ultimaâ„¢: A Groundbreaking Oil-Free PureAir Compressor
Ultima is a groundbreaking oil-free PureAir compressor. The unique design of this all-new compressor range from Gardner Denver utilizes both a low pressure and a high pressure dry screw airend—each airend individually driven by a variable speed, permanent magnet synchronous motor. This configuration offers exceptional efficiency compared to traditional oil-free technology.
Considering that energy consumption is the highest cost in the lifecycle of a compressor, the innovative design of Ultima allows us to deliver top-tier performance and unmatched efficiency. Remarkably, this is achieved within a footprint that is 37% smaller than a conventional two-stage oil-free compressor.
Ultimaâ„¢ Delivers on Every Level
- 100% oil and silicone-free
- Designed for clean air in critical applications
- Redefines efficiency for industrial compressors
Certified for Stringent Applications
Ultima compressors are 100% oil and silicone-free and meet ISO 8573-1 Class Zero (2010) standards, making them the ideal choice for the most stringent oil-free applications.
Recommended for use in:
- Food and beverage industry
- Pharmaceutical production
- Electronics manufacturing
- Automotive industry
For many industries air purity is a critical factor where even the smallest drop of oil risks contamination that can have effects such as:
- Product spoilage
- Production downtime
- Damage to production equipment
- Damage to brand reputation
Ultima™ – The Real Deal
A Revolution in Dry Screw Compressor Technology
What Makes the Ultima So Unique?
- Most efficient two-stage dry screw compressor on the market
- Uses independent low and high pressure dry screw airends
- Each airend is driven by a variable-speed, permanent-magnet, water-cooled motor
- Each motor operates at 97% efficiency (greater than IE4)
- Large turndown range up to 70%
- Lowest unloaded power consumption – only 8 kW
- Significantly smaller footprint while maintaining 63–70 dBA noise performance
- Available in water-cooled or air-cooled versions, both with heat recovery options
Superior Heat Recovery
- All major components are water-cooled for more efficient performance
- 94% of energy used is converted into heat; the closed-loop cooling system removes heat from motors, inverters, and airends
- Ultima’s cooling system maximizes energy recovery from the entire package
- Recovers 98% of the heat generated – approximately 12% more than standard systems
- Outlet water temperatures up to 90°C
- Heat recovery connections standard on water-cooled models, optional on air-cooled models
100% Oil-Free
- Eliminates the risk of contamination
13% Higher Efficiency
The Digital Gearbox drives each airend individually, significantly improving performance across the full turndown range.
Lowest Unloaded Power
Ultima consumes only 8 kW when unloaded compared to over 20 kW in conventional machines.
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Motor Efficiency
- Permanent magnet synchronous motors deliver >97% efficiency
- Compact design with maximum energy savings
Up to 70% Turndown
Accommodates large variations in demand without requiring an additional compressor – saving energy.
Ultra Quiet: 63 dBA
Fully enclosed, water-cooled design achieves industry-leading noise levels.
47% Smaller Footprint
Fits three Ultima machines in the space required for two conventional compressors.
98% Heat Recovery
Reclaims excess heat for use in other plant processes, improving overall efficiency.
Easy Installation
No ducting required for setup, simplifying installation and reducing costs.
Optimum Heat Recovery and Ultimate Cooling
Ultima uses a closed-loop water cooling system for all major components, with separate circuits for inter and after coolers. This ensures the highest possible heat recovery—approximately 10% more than comparable compressors. Air-cooling is also available.
Premium Productivity
Where most oil-free airends deteriorate quickly, Ultima uses German-engineered airends with a special coating that protects the compressor for life, maintaining maximum efficiency.
PureAir Silicone Free
Roughly 37% less floor space required
Graph shows energy savings v traditional variable speed oil-free compressor
