Bearing lubricating structure for rotary machinery.

摘要

A bearing lubricating structure for rotary machinery having a rotor rotatably supported by a bearing (5) in a casing (14), an oil reservoir (16) provided in a lower part of a bearing chamber (14) accommodating the bearing (5), and an oil disk (4) attached to an end of a rotating shaft (12) of the rotor and immersed in lubricating oil in the oil reservoir (16) so as to supply the bearing (5) with lubricating oil splashed by the oil disk (4), wherein a guide groove (1) is provided to collect lubricating oil flowing down an inner wall of a cover (11) attached to an end of the casing (14); a suction nozzle (3) is inserted into the guide groove (1) to suck lubricating oil collected in the guide groove (1); a lubricant passage (7) extends through the inside of the rotating shaft (2) to supply the bearing (5) with lubricating oil sucked through the suction nozzle (3); and an oiling nozzle (8) is communicated with the lubricant passage (7) and performs a pumping action induced by the rotation of the shaft (12), whereby a sufficiently large amount of lubricating oil is supplied to the bearing (5). <IMAGE>