Oil Free Air Compressors: Best Choice for Pure Air
Oil Free Screw Compressors
CompAir Ultima™
100% oil and silicone-free for clean air critical applications
Ultima™ is CompAir's groundbreaking oil-free PureAir screw compressor with a unique design. It is a brand new compressor range and it utilises a low pressure and high pressure dry screw airend. Each airend is individually driven by a variable speed, permanent magnet synchronous motor, offering exceptional levels of efficiency versus traditional oil-free technology.
CompAir is always improving the best products to be even better and more cutting edge.
Considering that the highest cost in the lifecycle of a compressor is the energy to run it, the unique design of Ultima has allowed us to combine the ultimate performance with the ultimate efficiency, and still deliver a footprint 37% smaller than a conventional two-stage oil-free compressor. This allows easy installation in the smallest possible space – more than a benefit where space is limited – it is a real property cost saving.
Ultima™ - the real deal
Ultima compressors are 100% oil and silicone-free and meet ISO 8573-1 Class Zero (2010), making them the ideal choice for stringent oil-free applications within food and beverage, pharmaceutical, electronic and the automotive industries. What makes this compressor series unique is the lack of a gearbox. Ultima uses ultra high efficiency direct drive motors which replace the gearbox and the single motor, which optimise performance throughout the complete volume range, as the airends can be driven at different speeds dependant on the demand. With a single motor driving both airends together this is not possible. This is where Ultima is hard to beat.
The Ultima utilises an intelligent “digital gearbox“ design, which continuously monitors and independently adjust the speeds of each airend, ensuring maximum efficiency and pressure ratios at all times. When any regulated speed compressor gets to the minimum speed, it goes into idle run. For any compressor, this is wasted energy. Ultima uses 45% less energy in idle run than a conventional two-stage compressor and a 160kW compressor uses only 8 kW in idle run.
It is available with iConn remote monitoring. iConn is the all new and smart, proactive real-time monitoring service that delivers in-depth and real-time knowledge on the system to our compressed air users. It enables accurate production planning and total peace-of-mind protection, generating insight and statistics that keep users informed on performance, at the same time highlighting potential issues before they become a problem.
It's compact, low maintenance, high capacity, and exceeds industrial expectations.
100% oil and silicone free - Highest levels of air quality
Highest efficiency levels - Low running costs
Low noise design - Installation at point of use
LP & HP airends individually driven - Energy efficient across the flow range
Very efficient heat recovery - Most efficient machine
Easy installation - No ducting required
On-board monitoring - Very user-friendly
Available with iConn remote monitoring - IoT connected
Oil-Free Air Compressors: Best Choice for Pure Air
Oil-free air compressors are designed to deliver clean, contaminant-free compressed air without using lubricating oil in the compression chamber. Because no oil is present in the air stream, these compressors are widely used in industries where air purity is critical, such as food processing, pharmaceuticals, electronics, and medical applications.
1. 100% Pure Air Quality
Oil-free compressors eliminate the risk of oil contamination in compressed air. This ensures that production processes and end products remain clean and safe, especially in sensitive industries.
2. Lower Maintenance Requirements
Since no lubricating oil is used, there is no need for oil changes, oil filters, or oil separators, reducing maintenance work and operating costs.
3. Environmentally Friendly
Oil-free systems prevent oil leaks and disposal issues, making them a more sustainable and eco-friendly choice for modern industrial operations.
4. Improved Energy Efficiency
Many modern oil-free compressors feature optimized designs and variable-speed drives that help reduce energy consumption while maintaining reliable performance.
5. Lower Long-Term Operating Costs
Although the initial investment may be higher, the absence of oil management and reduced filtration requirements can significantly lower operating costs over time.
Oil-Free Screw Compressors
Oil-free screw compressors are one of the most efficient types of oil-free compressors used in industrial applications.
How They Work
Oil-free screw compressors use two interlocking helical rotors that compress air as it moves through the chamber. The rotors do not touch each other, so lubrication inside the compression chamber is not required.
