JPH0386215U

JPH0386215U -

Info

Publication number: JPH0386215U
Application number: JP14652789U
Authority: JP
Priority date: 1989-12-21
Filing date: 1989-12-21
Publication date: 1991-08-30

Description

[Brief explanation of the drawing]

第１〜２図は本考案の転がり軸受の一実施例と
して円筒ころ軸受を示しており、第１図は全体構
成を示す断面図、第２図は保持器の外周面を示す
図、第３図は全体構成を示す側面図、第４図は本
考案の対象となる転がり軸受の１例を示す側面図
、第５〜６図は従来の転がり軸受を示しており、
第５図は第１図と同様の断面図、第６図は第５図
のＡ−Ａ断面図、第７〜８図は好ましくない動圧
溝の形状の２例を示す、それぞれ第２図同様の図
である。１……外輪軌道、２……外輪、３……内輪軌道
、４……内輪、５……転動体、６……保持器、７
……転がり軸受、８……ハウジング、９……軸、
１０……凹溝、１１……通路、１２……転がり軸
受、１３……本体、１４……ポケツト、１５……
円環部、１６……動圧溝。 1 and 2 show a cylindrical roller bearing as an embodiment of the rolling bearing of the present invention, FIG. 1 is a sectional view showing the overall structure, FIG. 2 is a view showing the outer peripheral surface of the cage, and FIG. The figure is a side view showing the overall configuration, FIG. 4 is a side view showing an example of a rolling bearing to which the present invention is applied, and FIGS. 5 and 6 show conventional rolling bearings.
FIG. 5 is a sectional view similar to FIG. 1, FIG. 6 is a sectional view taken along line A-A in FIG. 5, and FIGS. It is a similar figure. 1... Outer ring raceway, 2... Outer ring, 3... Inner ring raceway, 4... Inner ring, 5... Rolling element, 6... Cage, 7
... Rolling bearing, 8 ... Housing, 9 ... Shaft,
10... Concave groove, 11... Passage, 12... Rolling bearing, 13... Main body, 14... Pocket, 15...
Annular portion, 16...dynamic pressure groove.

Claims

[Claims for Utility Model Registration] (1) A rolling bearing consisting of a plurality of rolling elements provided between an outer ring and an inner ring, and a cage having a plurality of pockets for holding and guiding the plurality of rolling elements. The holding portion leaves short cylindrical annular portions at both ends of the cylindrical main body, forms the plurality of pockets between the two annular portions, and has a plurality of pockets formed on the circumferential surface of both the annular portions. On the inner peripheral surface of the outer ring or the surface facing the outer peripheral surface of the inner ring,
A rolling bearing characterized in that a number of chevron-shaped dynamic pressure grooves are formed, and the center portion of each dynamic pressure groove is sharpened in a direction opposite to the rotational direction of the cage. (2) Instead of the circumferential surface of the annular portions provided at both ends of the cage, chevron-shaped dynamic pressure grooves are provided on the inner circumferential surface of the outer ring or the outer circumferential surface of the inner ring, on the surface facing the circumferential surface of the annular portion. The rolling bearing according to claim 1, wherein a plurality of dynamic pressure grooves are formed, and the center portion of each dynamic pressure groove is sharpened in a direction opposite to the rotational direction of the outer ring or the inner ring.