Rolling bearing

A technology for rolling bearings and rolling elements, applied in the field of rolling bearings, can solve problems such as strong contact, hot sticking or peeling, wear, etc., and achieve the effect of alleviating edge load and preventing wear

Inactive Publication Date: 2013-06-05
NSK LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there may be cases where the axial end face 106 of the cylindrical roller 104 is in strong contact with the axial side face 121
Especially when the chamfered portion 107 formed between the rolling surface 105 and the axial end surface 196 is in contact with the circumferential side surface 123 of the pocket portion 111, as Image 6 As shown, it is possible to generate edge loads (concentrated loads at the ends) on both axial sides of the circumferential side surface 123, so that wear occurs
And, depending on the situation, there is also the possibility of thermal sticking or peeling

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Below, based on Figure 1 to Figure 4 One embodiment of the rolling bearing of the present invention will be described in detail. figure 1 It is a radial cross-sectional view of a cylindrical roller bearing 1 according to an embodiment of the present invention. figure 2 yes figure 1 Axial sectional view of cage 10, image 3 yes figure 2 A partial top view of the cage 10.

[0043] Such as figure 1 As shown, the cylindrical roller bearing 1 has: an outer ring 2 forming an outer ring raceway surface 2a on the inner peripheral surface; an inner ring 3 forming an inner ring raceway surface 3a on the outer peripheral surface; a plurality of cylindrical rollers as rolling elements 4; and a cage 10 arranged between the outer ring 2 and the inner ring 3 to hold a plurality of cylindrical rollers 4 .

[0044] Such as figure 2 , 3 As shown, the cage 10 is a cut cage, which includes: a pair of annular parts 12, 12 arranged side by side in the axial direction; A plura...

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Abstract

The retainer (10) of this cylindrical rolling bearing (1) has pockets (11) which retain the cylindrical rollers (4). Each of the pockets (11) is configured from: the circumferential side surfaces (23, 23) of two columns (16, 16) adjacent to each other in the circumferential direction, the circumferential side surfaces (23, 23) facing each other in the circumferential direction; and the axial side surfaces (21, 21) of a pair of circular ring sections (12, 12), the axial side surfaces (21, 21) facing each other in the axial direction. Circumferential convex surface sections (28, 28) are formed by crowning on the circumferential side surfaces (23, 23). Axial convex surface sections (26, 26) are formed by crowning on the axial side surfaces (21, 21).

Description

technical field [0001] The present invention relates to a rolling bearing provided with a cage. Background technique [0002] At present, cylindrical roller bearings are often used as bearings used for rotation support parts of machine tools and the like. Figure 5 A cage 110 used in a conventional cylindrical roller bearing and cylindrical rollers 104 housed in pockets 111 of the cage 110 are shown. The cage 110 has: a pair of annular portions 112 , 112 arranged side by side in the axial direction; and a plurality of beam portions 116 arranged at predetermined intervals in the circumferential direction to connect the pair of annular portions 112 , 112 . A space surrounded by the pair of ring portions 112 , 112 and the two adjacent beam portions 116 , 116 serves as the pocket portion 111 . Also, for simplicity, Figure 5 A state in which the cylindrical roller 104 is housed in only one pocket portion 111 is shown. [0003] When the cylindrical roller bearing rotates, the r...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): F16C19/22F16C33/46
CPCF16C33/467F16C33/4676F16C33/46F16C19/26F16C2240/50F16C33/4682F16C33/4629
Inventor清水健司
OwnerNSK LTD