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Edward Lowton
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Oil-free technology
26 September 2018
Gardner Denver’s CompAir Ultima compressor has been engineered with two highly-efficient, permanent magnetic motors that replace the traditional gearbox design. These two, variable-speed motors are capable of achieving speeds of up to 22,000 RPM and efficiencies greater than IE4, which directly drive the airend without the need for a gearbox.
The company says that, while conventional models still use oil to lubricate and cool a system’s motors and airends, Ultima uses water in a closed-loop circuit to cool these components which allows greater heat transfer and cooling efficiencies, as well as ensuring as little oil as possible is used in the system for assured air purity. Water-cooling also places less stress on these components, limiting the opportunity for any maintenance issues and reducing servicing costs.
Ultima is offered as standard from 75 to 160kW, with each unit fully upgradeable between this kilowatt range.
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