Radial cages for high speed bearings

A cage, axial technology, applied in the direction of bearings, shafts and bearings, bearing components, etc., can solve problems such as bearing failure, reducing bearing fatigue strength, lubricating film tearing, etc.

Active Publication Date: 2021-05-18
AB SKF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This deformation in turn leads to contact between the radial cage and the needle rollers, resulting in increased friction and tearing of the lubricating film
This can greatly reduce the fatigue strength of the bearing and shorten its life
Also, due to the thinner shape of the needle rollers due to the smaller installation height, when additional axial loads are present, the needle rollers can roll out of the bearing cage in the side ring area, which can lead to complete failure of the bearing

Method used

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  • Radial cages for high speed bearings
  • Radial cages for high speed bearings
  • Radial cages for high speed bearings

Examples

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Embodiment Construction

[0021] figure 1 A perspective view of a needle roller cage assembly 1 is shown, comprising a radial cage 2 and a roller 4 inside the radial cage. The radial cage 2 also has a first side ring and a second side ring 6, 8, which have a certain distance in the axial direction and are connected to each other by an axial beam 10, between which there is a space for accommodating the rollers 4. 12 pocket holes. remove figure 1 In addition to figure 2 It can be seen that the axial cross member 10 itself has side sections 14 - 1 , 14 - 2 which are respectively connected to the side rings 6 , 8 . In addition, the axial cross member 10 has a central section 16 which is connected to the side sections 14-1, 14-2 via lateral connection sections 18-1, 18-2. Wherein the side sections 14 - 1 , 14 - 2 and the middle section 16 are axial, and the connecting sections 18 - 1 , 18 - 2 are inclined to the rotation axis A of the bearing 1 .

[0022] The limit flanges 20, 22 installed on the side...

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PUM

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Abstract

The invention relates to a radial cage (2) for receiving and guiding cylindrical rollers (4), in particular a needle roller cage, having at least two radial cages spaced apart from each other in the axial direction and defining a radial cage (2) The side rings (6; 8) of the axial extension length and a plurality of axial beams (10) connecting the side rings (6; 8) to each other, and a plurality of axial beams are formed between the axial beams for accommodating cylindrical Pockets (12) of rollers (4), wherein the axial beams (10) each have two side sections (14) connected to the side rings (6; 8) and substantially parallel to the direction of axial extension, and a A central section (16) substantially parallel to the direction of axial extension, wherein the central section (16) is connected to side sections (14) via two connecting sections (18), wherein at least one side section (14) has a material with a first material A first region (24) of thickness (M1) and a second region (26) with a second material thickness (M2) greater than the first material thickness (M1).

Description

technical field [0001] The invention relates to a radial cage for receiving and guiding cylindrical rollers, in particular a needle roller cage. Background technique [0002] Radial cage needle roller cage assemblies or needle roller cages are especially suitable for high-speed applications, such as often used in planetary gears, which place higher demands on the needle roller cage assemblies used due to their high rotational speed. Such needle roller and cage assemblies generally consist of a radial cage and a plurality of needle rollers located in the radial cage and are characterized in particular by a very low radial overall height. At the same time, the needle roller cage assembly can withstand large centrifugal force and acceleration force, so it has high load capacity and circumferential rolling accuracy. [0003] In addition, the radial cage of this type of needle roller and cage assembly consists of two side rings defined by the circumferential extension of the rad...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/46
CPCF16C33/46F16C2300/22F16C33/4623F16C33/4676F16C2240/30F16C19/26F16C33/467
Inventor D·斯特布劳
Owner AB SKF
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