Maintenance of Major Components
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3) Bearings
a) Thrust bearing
The turbine wheel creates thrust force. Therefore, exercise care so that the shaft is not
deviated from its the original position due to this thrust.
b) Journal bearing
This journal bearing of floating type forms a dual oil film on both the inside and outside of the
bearing so that the bearing can rotate independently. As the dual oil film plays a role as a
damper, the sliding speed of the bearing surface becomes lower than the rotating speed of the
shaft, resulting in assurance of stability in its movement.
4) Sealing-Compressor shaft
The compressor is of a dual construction type composed of seal plate and seal ring to prevent the
leak of compressed air or lubricating oil.
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