SE519147C2 - Rolling bearing device for receiving radial and axial loads - Google Patents

Description

||> || Summary of the invention The object of the invention is therefore to improve a bearing device combined with radial and axial roller bearings, which prevents the roller bodies from running dry.

According to the invention, this object is solved according to the characterizing part of claim 1 in that the end side of the inner ring facing the axial roller bearing to the radial roller bearing has at least a first radially extending passage channel, which is connected to a second axially extending on the inner circumferential surface of the inner ring. review channel.

By this measure according to the invention, the occurring feeding effect of the axial roller bearing on the lubricant is converted into a forcibly continuous rotation of the lubricant throughout the combined bearing device.

The lubricant then moves from a space between the axial roller bearing and the radial roller bearing first through between the roller bodies in the radial roller bearing, then reaches via the two interconnected lubricant channels back into the raceway area of the axial roller bearing and thence into the space connecting the two bearing types.

According to the second claim claim for the invention, the roller bearing device is arranged in a hydraulic machine, for example in an axial piston machine. If, for example, such a machine is operated at very high temperatures, intensive stock flushing is unconditionally required for as long a service life as possible. In addition to the actual task, ie the lubrication of the rolling bodies, the lubricant should also provide heat transport, ie cool the bearing at the same time.

The invention is described in more detail as the following exemplary embodiments.

Brief Description of the Drawings The following shows: Fig. 1 an axial section through a bearing device according to the invention, Fig. 2 a side view of the bearing according to Fig. 1 and Fig. 3 a bearing according to the invention in a connection construction.

Detailed description of the drawings The rolling bearing device shown according to the invention in Figs. 1 and 2 consists of the radial roller bearing 1 and the axial roller bearing 2. The inner ring 3 of the radial roller bearing 1 is formed with L-shape, i.e. it has the axially extending part 4 and radially stretching part 5.

The radial roller bearing 1 further comprises the outer ring 6, which on one side has the radially inwardly facing edge 16. The axially extending part 4 of the inner ring 3 is also provided with two spaced edges 17 and 18, so that it The cylinder roller set 7 filled with rollers is guided in the axial direction. Associated raceways are denoted by 8 and 19. The axial roller bearing 2 belonging to the bearing device has guided roller rollers 10 in the basket 9, the associated raceways 12 and 20 on one side are formed by the end surface of the radially extending part 5 of the inner ring 3, and on the other side of the impeller 11. Both bearings 1 and 2 have the common bearing shaft 15.

As further shown in Figs. 1 and 2, the end side of the inner ring 3 facing away from the axial roller bearing 2 is provided with four circumferentially spaced first passage channels 13, which in turn are connected to four second passage channels 14 spaced apart from each other. which extend on the inner mantle surface of the inner ring 3.

The hollow shaft 21 shown in Fig. 3 is arranged in the housing 22 by means of the bearing unit 1 consisting of the radial roller bearing 1 and the axial roller bearing 2. The bearing device is thereby sealed outwards through the two seals 23 and 24, "amano" 519 519 147 4 wherein the seal 23 is held directly in the housing 22 and the seal 24 via the seal carrier 26. In the manner already described, the inner ring 3 is provided with the two passage channels 13 and 14. Fig. 3 further shows that due to the existing seals 23 and 24 can not discharge any lubricant. If the present lubricant is now thrown outwards through the axial roller bearing 2, this would run dry in the event of a loss of the first and the second passage channel 13, 14, since no return of lubricant is possible.

As shown by the arrows, when the lubricant emanates from the free space 25, which is formed by the two bearings 1, 2 and the housing 22, through the roller body ring 7 of the radial roller bearing 1, then via the first and second passage channels 13, 14 and via the cylinder rollers 10 guided in the basket 9 eat to the free space 25. In this way a forced circulation of lubricant is realized, so that the raceways 12, 20 of the axial roller bearings 8 and 19 to the radial roller bearing 1 are constantly supplied with lubricant. > »|» | 10 15 20 25 NQOXUTQUJNP 'll 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 519 147 5 Reference numerals radial roller bearings axial roller bearings inner ring axially extending part radially extending part outer ring cylinder roller inner tread basket cylinder roller treadmill treadmill second passage edge edge edge outer tread running track hàlaxel house seal seal free space seal carrier

Claims (2)

1. Rolling bearing device for receiving radial and axial loads, consisting of one (1) and one axial roller bearing (2), one (1) being made with L-radial roller bearing inner ring (3) to form a radial roller bearing , so that its axially extending part (4) forms (1) and its (12) so that the inner raceway (8) of the radial roller bearing radially extending part (5) forms a raceway (2), from the axial roller bearing (2) The axial roller bearing characteristic end face of the inner ring (3) (1) has at least a first (13) connected to a second axially extending passage channel on the passage channel radially extending to the radial roller bearing, which is the inner circumferential surface of the inner ring (3). (14) Rolling bearing device according to claim 1, channel for lubricant. characterized in that it is arranged in a hydraulic machine, for example in an axial piston machine.