| 摘要 |
PURPOSE:To prevent damages of a thrust bearing and a thrust collar due to the mingling of alien matter in lubricating oil by ensuring the thickness of oil film more than the diameter the alien matter. CONSTITUTION:The lubrication oil flowing inside a branch pipe 30 is introduced into a high pressure oil port 20 of a thrust bearing 6 via a pressure control valve 32 and a high pressure oil pipe 22 after pressurized by a pump 31. An output signal from an oil-film thickness detector 23 arranged in an oil groove 3c of a thrust plate 3 in the thrust bearing 6 and a signal from a pressure detector 34 are inputted into a pressure controller 33, which controls a pressure regulator valve 32 for maintaining a gap between a thrust plate 3 and a thrust collar 4a, that is, an oil film thickness ho between them constantly at a fixed value. |
