To provide a compressor device to discharge a compressed air, in which a lubricating oil for bearings is precluded from inclusion in the compressed air.

An impeller 2 is coupled with a rotary shaft 1 rotated by the exhaust gas or a motor, or by both of them, and a compressed air intake pipe line 22a is provided to tie a pressurizing volute 15 where a compressed air pressurized by the centrifugal force of the impeller 2 exists, with a bushing 6 on the rotary shaft 1, wherein the compressed air is taken in from an intake port 12 of the intake pipe line 22a left open to the volute 15. In this compressor device, the compressed air taken in and jetted out of a jet 13 against the bushing 6 blows off the lubricating oil going to pass through the gap 24 between the bushing 6 and a back plate 16 to cause the oil to be exhausted from an outlet port 5 via an exhaust pipe line 22b, and the compressed air discharged from the compressor is precluded from inclusion of the lubricating oil.