Doosan GL08K, Operation & Maintenance Manual

Page: 178 / 206

Maintenance of Major Components - 172 -
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.