Lubricating structure of rolling bearing

The invention provides a lubricating structure of a rolling bearing to stabilize supply of oil to a pair of rolling bearings supporting both ends of a rotary shaft. An oil guide plate (59) is providedwith a cylindrical insertion part (59) press-fitted into an oil passage (23) a of the rotary shaft (23); and an oil guide part (59b) expanding like a funnel from one end side of the insertion part (59a) toward a space (60). Between an outer peripheral part of the oil guide part (59b) and an inner wall surface (12b) of the defined space (60) of a casing (12), a clearance [alpha] for guiding oil inthe space (60) to the first rolling bearing (21) is formed. Thus, the oil is not supplied to the first rolling bearing (21) through the clearance [alpha] even if the oil level of the space (60) is lowered, and can be smoothly guided to an oil passage (56a) of a reduction shaft (23) by the oil guide part (59b) expanding like a funnel and supplied to the second rolling bearing (22). 本发明提供一种滚动轴承的润滑结构，以使油对支承旋转轴的两端部的一对滚动轴承的供给稳