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Pre-tensioned rolling element mounting

A rolling element, pretensioning technology, applied in the field of pretensioned rolling element bearings

Pending Publication Date: 2021-05-14
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, dismantling of pretensioned rolling bearings is usually only possible by means of mechanical action which destroys the rolling bearings

Method used

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  • Pre-tensioned rolling element mounting
  • Pre-tensioned rolling element mounting
  • Pre-tensioned rolling element mounting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] exist figure 1 , a rolling element bearing is shown. In the exemplary embodiment, the rolling element bearing is formed by two rolling bearings 1.1 and 1.2, and in another exemplary embodiment it may also comprise only one of the rolling bearings 1.1, 1.2. Each of these rolling bearings 1.1, 1.2 is formed by an inner ring 2, an outer ring 3 coaxially surrounding the inner ring 2, and rolling elements 4 on a raceway 5 provided by the inner ring 2 and the outer ring 3 Roll between the corresponding bearing rings 2, 3.

[0027] In addition, in figure 1 The shaft 6 is shown in , which passes through the bore 7 of each of the two inner rings 2 when the rolling bearings 1.1, 1.2 are mounted on the shaft 6 . The shaft 6 is provided with first fixing means formed by a shoulder 8 provided integrally with the shaft 6 . If two rolling bearings 1.1, 1.2 are mounted on the shaft 6, the two rolling bearings 1.1, 1.2 are axially inseparable from each other, wherein the rolling bea...

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PUM

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Abstract

The invention relates to a pre-tensioned rolling element bearing, having at least one rolling bearing (1.1; 1.2), comprising an outer ring (3), an inner ring (2) through which a bore (7) runs, and rolling elements (4) which roll on raceways provided on the outer ring and on the inner ring, having a shaft (6) which penetrates the borehole of the inner ring, and having fixing means (8, 21) by which the inner ring fitted onto the shaft is fixed axially on the shaft, at least one of said fixing means being a shaft nut (21), and the internal contour (11) of the bore being formed conically. A first sleeve (12) is provided which is releasably connected to the shaft, of which the outer casing (13) is likewise formed conically and which has a radially outwardly directed collar (14) at the end near the shaft nut. In the connected state of the inner ring and of the shaft, the conical inner contour of the bore rests against the conical outer casing of the first sleeve, and at least one axial bore (15.3) passes through the shaft nut. The bore centre of at least one of said axial bores and the bore centre of an axial bore (15.1), which is provided in the collar of the first sleeve and has a thread, align with each other.

Description

technical field [0001] The invention relates to a pretensioned rolling element bearing, a method for assembling a pretensioned rolling element bearing and a method for disassembling a pretensioned rolling element bearing. Background technique [0002] A pretensioned rolling element bearing is understood to mean an arrangement in which a pretension acts on a rolling bearing supporting, for example, a shaft, which restores the existing condition between the rolling elements and the raceways provided by the bearing rings. There is clearance, thereby ensuring smooth and precise operation of rolling bearings. [0003] In order to set this pretension, so-called shrink fits have been established. For this purpose, the rolling bearing to be mounted is heated and fitted in this state on the shaft with its bore on the inner ring. If the rolling bearing is subsequently cooled, an interference fit is created between the inner ring of the rolling bearing and the shaft, which causes the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C25/06F16C35/06F16C35/073F16C35/078
CPCB23P19/027B01D47/06B01D53/00B01D2258/0283F28D21/0014F16C19/385F16C25/06F16C33/605F16C35/061F16C35/062F16C35/073F16C35/078F16C2226/16F16C2229/00F16C2300/02B01D53/343B01D53/48B01D2257/30
Inventor 韩慧敏克劳斯·齐默尔曼托马斯·迪特里希
Owner SCHAEFFLER TECH AG & CO KG