DE8911517U1 - Bearing arrangement on an engine - Google Patents

Description

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89G34950E

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Bearing arrangement on an engine
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The invention relates to a bearing arrangement on an engine, in which the molecular shaft is mounted by means of a roller bearing in a bearing bore that can be covered at least by a removable outer bearing cover,
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i; In a bearing arrangement of this type in use, the outer ring of the roller bearing has two fixed rims ^and the inner ring is designed without rims. This design of the bearing arrangement is chosen in order to enable the bearing to be easily dismantled. If it becomes necessary to dismantle the bearing, the outer ring including the rollers can be pulled off the rimless inner ring after the bearing cover has been removed from the bearing arrangement . There is then sufficient free space to allow a pulling tool to be used to pull the inner ring off the motor shaft.

It has now been shown in such a bearing arrangement that there is a risk of friction on the outer ring of the roller bearing, especially at low

Load on the bearing and higher speed of the motor shaft can lead to the rollers floating (aquaplaning effect) on the lubricating oil collected in the outer ring. This blocks the rollers in their rotation and high friction losses occur, which lead to a correspondingly strong heating of the bearing arrangement.
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; The accumulation of lubricating oil on the outer ring, which leads to the rollers floating, could be avoided by using a commercially available bearing with a flangeless outer ring. However, this leads to complications when dismantling the bearing arrangement. When dismantling the bearing, only the

Ml 2 Th / 26.09.1989

89 G 3 4 9 5 EN

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The outer ring without rims can be pulled off the rollers. The rollers, however, remain on the inner ring with rims. This means that only a narrow opening is available through which no pulling tool can be passed. Other, very complex pulling methods would therefore have to be used to pull off the inner ring.

The invention therefore aims to design a bearing arrangement of the generic type in such a way that the aforementioned floating of the rollers on the lubricating oil is reliably avoided while still retaining the possibility of removing the inner ring using a simple removal tool.

According to the invention, the stated problem is solved in that the outer ring of the roller bearing is designed without a rim and the rim adjacent to the bearing cover on the inner ring provided with rims is removable.

Because the outer ring is designed without a rim, no amount of oil can accumulate at the point of load on the bearing that is large enough to cause the rollers to float. If the bearing needs to be dismantled, the outer ring can be pulled out after removing the outer bearing cover and the rollers can be removed from the inner ring after removing the removable rim. This provides a sufficiently large opening for the attachment of a removal tool.

The subject matter of the application is described in more detail below using an embodiment shown in the drawing.

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A bearing arrangement 1 has a cylindrical roller bearing 5 arranged on a motor shaft 2 and inserted into a bearing bore 3, for example of a bearing housing 4. The outer ring 6 of the cylindrical roller bearing 5 is designed without a rim, so that the rollers 7 of the cylindrical roller bearing 5 are not axially guided on the outer ring 6. The inner ring 8 of the cylindrical roller bearing 5, on the other hand, is provided with a rim 9 or 10 on both sides. The rim 9 of the inner ring 8 adjacent to the outer bearing cover 11 is removable and is held in the axial direction by a ring 12. The rim Iu, on the other hand, is formed integrally on the inner ring 8.

If it becomes necessary to disassemble the bearing arrangement 1, the fastening screws 13 of the outer bearing cover 11 are loosened so that this bearing cover 11 can be removed. The bearing housing 4 can then be pulled off together with the outer ring 6. After pulling off the ring 12, the rim 9 adjacent to the outer bearing cover 11 can then be removed from the inner ring 8 of the cylindrical roller bearing 5 so that the rollers can then also be removed from the inner ring 8. This creates a sufficiently large opening through which a pulling tool can be passed that grips the inner ring 8 on its rim 10. Using such a tool, the inner ring 8, which is arranged with a press fit on the motor shaft 2, can then be pulled off the motor shaft 2 in a simple manner.

Claims (1)

89 R 3 h 9 5 EN I t · f ■ r &igr; · · Claim for protection Bearing arrangement on a motor, in which the motor shaft (2) is mounted by means of a roller bearing (5) in a bearing bore (3) which can be covered at least by a removable outer bearing cover (11), characterized in that the outer ring (6) of the roller bearing (5) is designed without a rim and the rim (9) adjacent to the bearing cover (11) is removable on the inner ring (8) provided with rims (9 and 10).