What is an Oil-Free Rotary Compressor?
Oil-free rotary compressors compress air without utilizing lubricant in the compression chamber. Within the dry compression chamber, contactless intermeshing rotors typically coated with a type of PTFE coating create compression.
Why Choose an Oil-Free Rotary Compressor?
Oil-free rotary compressors don’t use lubricant. Because these compressors don’t use lubricant, oil-free rotary compressors are typically two-stage utilizing an intercooler to remove heat caused by compression. Also, the lack of sealing fluid requires much higher rotational speeds than typical oil flooded type compressors.
Oil-Free Rotary Compressors are Safe and Efficient
Oil-free rotary compressors create oil-free air. This eliminates the possible contamination of products downstream that may come in contact with plant compressed air. If your company is in a position where air quality is critical and costs of product contamination are high, oil-free rotary compressors should be considered. And because of the oil-free design, the compressors are easier on the environment and the total cost of ownership is reduced significantly.
Buying an Oil-Free Rotary Compressor
Companies operating in food production, instrument air, laboratories, medical, chemical production, and power generation would be good fits to purchase an oil-free rotary compressor. Things to consider is whether oil-free air is absolutely mandatory in your company’s production. Oil-free rotary compressors are typically more expensive and have a short lifespan because of the higher temperatures and air-end speeds. Also, if compressed air comes in contact with the final manufactured product and the potential for damage or spoilage is high, oil-free rotary compressors is the correct choice for your air compressor.
High-quality oil-free compressed air with sound levels as low as 64 dBA, the EnviroAire rotary scroll provides the performance you demand in a whisper-quiet, fully enclosed package. With multiple compression modules, the EnviroAire optimizes efficiency by matching air delivery with demand, while providing redundancy and peace of mind. Designed specifically for industrial and laboratory applications that require 100% oil-less air. Featuring a clean, simple, and serviceable layout, the EnviroAire is ready for your specific application requirements.
The Ultima series compressors from Gardner Denver are the smallest, quietest, and most efficient two-stage variable speed oil-free compressors on the market. Each airend is individually driven by a variable-speed, permanent-magnet, water-cooled motor operating at >97% efficiency. This makes Ultima a true direct-drive compressor, completely eliminating the gearbox and its associated energy loss. The intelligent on-board controller (Digital Gearbox™) continuously adjusts the speed of each airend independently, delivering the perfect speed ratio that provides up to 13% better efficiency than the competition
The two-stage variable speed centrifugal Quantima provides unmatched efficiency due to its low level of energy consumption and its incredibly low off-load power consumption. At 400 HP, the Quantima off-load power is 2.5% of full load power or 7.5 kW, while comparable compressors have an off-load power of 15 to 70% of their full load power.
The EnviroAire T/TVS Oil Free compressors utilize state-of-the-art design and manufacturing to ensure very tight tolerances, thereby reducing loss. In addition, the rotors and housing are covered with a unique hard coating that ensures long-lasting performance. This combination results in little or no performance decay even after 40,000 hours of operation, saving thousands in utility expenses.