| 摘要 |
PURPOSE:To supply lubricating oil sufficiently to each bearing and prevent a bearing from seizure and wear by at least an oiling groove opening or communicating to a chamber to supply lubricating oil to the bearing mounted on a frame. CONSTITUTION:An eccentric oiling path 19 provided in a shaft section 9a pumps up oil on the bottom of a chamber 1 by a centrifugal pump action caused by the rotation of the crankshaft 9 to supply the oil to respective bearings 8, 11, 12. And oil sucked up through the eccentric oiling path 19 is supplied to an oiling hole 33 communicating to said path 19 and an oiling groove 34 communicating thereto and provided axially on the outer peripheral surface of shaft section 9a to supply the oil to an underside plain bearing 12 for supporting the shaft section 9a of a crankshaft 9 for example. Thus, oiling to respective bearings is satisfactorily carried out, and proper oil film pressure resisting radial load is generated in the respective bearings so that the bearing can be prevented from wear and seizure. |
