MiTi® blowers, ranging from 5 HP to 200 HP, are designed to use high-efficiency, high-speed permanent magnet motor elements, MiTi® patented 4th Generation airfoil bearings, advanced impellers and controllers for variable speed operation. The single integrated motor, impeller and oil-free bearing system increases life, and reduces maintenance costs and machine footprint. Wide operating speed range demands are achieved with sensorless variable frequency drives. Long life in a compact, lightweight and quiet package. Low starting and operating currents, made possible by MiTi® foil bearings, reduce operating and maintenance costs as well as greenhouse gas emissions. Since absolutely no oil is used in MiTi® blowers, environmental hazards and waste disposal issues are eliminated. Because MiTi® blowers and compressors are absolutely oil-free, they can be customized to work with many different process gases. When used with fuel cell stacks, contaminant free compressed air or hydrogen is supplied.