The Quantima is an oil-free centrifugal compressor. The Quantima air compressor has several key technologies that make them the most advanced compressors on the market today.
In this article we are going to focus on the core of the Quantima, the Q-Drive, which is a high-speed electric motor with magnetic bearings. The patented Q-Drive motor incorporates an asynchronous induction design and operates at high speeds to avoid the need for a conventional gearbox. Without a gearbox, you are eliminating costly losses in efficiency and parts that need to be replaced as they wear down. And of 
course, since there is no gear box, this means the compressor does not require any oil at all. The copper coated, solid steel rotor has the impellers directly coupled to it. This gives the Quantima a single rotating assembly with no mechanical contact. There is a huge gain in efficiency as a result of no gearbox or contact parts. A great example is the Off Load power consumption. The Quantima uses only 2.5% of full load power. No other brand even comes close to that as shown in this chart.
The Active Magnetic Bearings (AMB), are the second part of this unique design. A magnetic bearing is an electro-magnetic bearing which supports a load using magnetic levitation. These bearings levitate the rotor and impellers and permit motion without friction or wear. The bearings maintain the relative position of the rotating assembly (rotor) with respect to the stator. Using position sensors, the AMB controller calculates the appropriate control current to keep the rotor in the desired position and optimize performance. Once again, since there is no mechanical contact in this area, energy savings of up to 25% or more are easily achievable. Another great advantage to this design is that there is no performance degradation over the life of the compressor unlike standard screw technologies with wearing parts.
