Patent ID: 8134263

Claim:
A bearing unit comprising: a shaft; a radial bearing which supports an outer circumferential surface of said shaft and which has an upper end surface and a lower end surface; a housing for accommodating said radial bearing, said housing having an open end from which said shaft is inserted and a closed end opposite to said open end in the axial direction of said shaft; a lubricating oil filled in said housing to reduce rotational friction of said shaft; a holding member provided at said open end of said housing which holds said lubricating oil and which has an upper surface and a lower surface; and a sealing member for closing said open end of said housing to prevent leakage of said lubricating oil, wherein, said sealing member has a side wall portion interposed between said holding member and said shaft and opposed to the outer circumferential surface of said shaft, and the lower surface of the holding member is in contact with the upper end surface of the radial bearing.