| 摘要 |
<p>PURPOSE:To make an excellent lubricating action obtainable, with a lubricating oil flowing out and cooled in the cooling circuit to perform the lubrication for the main shaft rotating as wall as with said lubricating oil returned to the crank case. CONSTITUTION:A lubricating oil, flowing out and cooled in the cooling circuit and returned to an oil sump 57, by a reason that a pressure of the oil sump 57 is remarkably higher than that of a crank case 13, passes through an oil return path to flow into a seal room 61 lubricating the mechanical seal, further passes through the clearance, both of an oil passage hole 64 of a main shaft 16 and a bearing 15, returning to the crank case 13. In this way, while lubrication on one hand the bearing 15, the oil passes through a clearance between inner wall face of a front housing 12 and a rotor 14, to be dispresed outward by a centrifugal force of a rotation of the rotor 14, and performs an excellent lubricating action for thrust needle bearings 17, 18 and ball knuckle joint parts of a rocking plate 19 and a rod 28.</p> |
