JPH02135713U

JPH02135713U -

Info

Publication number: JPH02135713U
Application number: JP4473289U
Authority: JP
Priority date: 1989-04-17
Filing date: 1989-04-17
Publication date: 1990-11-13

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す縦断面図、
第２図は第１図の円筒ころ端面に形成されたスラ
スト軸受用動圧発生用溝の拡大平面図、第３図は
本考案の第２実施例を示す縦断面図、第４図は第
３図の円筒ころ端面に形成されたスラスト軸受用
動圧発生用溝の拡大平面図、第５図は従来のスラ
スト軸受装置の縦断面図、第６図は第５図の円筒
ころ端面に形成されたスラスト軸受用動圧発生用
溝の拡大平面図である。１，１０……スリーブ、３，１１……軸、２，
１３……円筒ころ、４，１４……スラスト軸受面
、５，１５……スラスト受面、６，１６，２６…
…面取り部、７，１７……動圧発生用溝。 FIG. 1 is a longitudinal sectional view showing the first embodiment of the present invention;
2 is an enlarged plan view of the groove for generating dynamic pressure for a thrust bearing formed on the end face of the cylindrical roller shown in FIG. 1, FIG. 3 is a longitudinal sectional view showing a second embodiment of the present invention, and FIG. Figure 3 is an enlarged plan view of the dynamic pressure generating groove for the thrust bearing formed on the end face of the cylindrical roller, Figure 5 is a longitudinal sectional view of a conventional thrust bearing device, and Figure 6 is the groove formed on the end face of the cylindrical roller in Figure 5. FIG. 3 is an enlarged plan view of a dynamic pressure generating groove for a thrust bearing. 1, 10... Sleeve, 3, 11... Shaft, 2,
13... Cylindrical roller, 4, 14... Thrust bearing surface, 5, 15... Thrust bearing surface, 6, 16, 26...
... Chamfered portion, 7, 17... Groove for generating dynamic pressure.

Claims

[Claims for Utility Model Registration] A planar thrust bearing in which a cylindrical roller is fitted and attached to the inner diameter surface of a sleeve, a shaft is fitted to the inner diameter surface of the sleeve, and the shaft side surface of the cylindrical roller is provided. A chamfered portion is provided at a location between the thrust bearing surface and the outer diameter surface of the cylindrical roller such that the surface faces the thrust bearing surface provided on the end surface of the shaft, and a groove for generating dynamic pressure is provided in the thrust bearing surface. A thrust bearing device, wherein the dynamic pressure generating groove is continuously provided from the thrust bearing surface to the outer peripheral end of the chamfered portion.