DE8905549U1 - Rolling bearings, especially radial roller bearings - Google Patents

Description

SKF GmbH ,..,.·.; .··.:-.· Stuttgart, 1989-()i*-2i*

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Description Rolling bearings, especially radial roller bearings

The present innovation relates to a rolling bearing, in particular wheel-roller bearings, which is suitable for absorbing additional axial forces, has an inner ring with bosses or the like and at least one end face running essentially perpendicular to the bearing axis with flanged grooves or the like.

A wheel bearing with a radial diameter is already known from DE-GM 7 107 931, which is provided with spiral grooves on its front surface. The production of these grooves is relatively expensive.

The innovation is based on the task of creating a rolling bearing of the above-mentioned type, the contact surface of which is provided with lubrication grooves, which can be manufactured in a simple manner and can also be used in part to remove the bearing rings.

According to the innovation, this task is solved by providing radially directed grooves starting from the bore or shell surface of the flanges or the like, which have base surfaces inclined at an angle to the front side of the inner ring and/or outer ring and extend to a contact surface, where they merge into radially running grooves, in each of which a radially directed wave crest and two adjacent

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The arrangement and design of these grooves ensures good lubrication of the contact surface and easy disassembly of the bearing element.

According to a further feature of the innovation, the depth of the groove in the contact surface is selected so that the wave crest does not protrude axially beyond the contact surface of the inner and/or outer ring. This ensures that the axially contacting machine element rests fully on the contact surface.

Further features of the innovation are described in the subclaims.

Details of the innovation are explained in more detail in the following description of an example implementation.

Show it:

Fig. 1 A cylindrical roller bearing according to the innovation in section, Fig. 2 shows the side view of the In Fig. 1 shown

inner ring from the right with shallow grooves that initially run across the entire width of the face,

Fig. 3 shows a section A-B according to Fig. 2,

Fig. 4 a part of the inner ring with a groove arranged in the front face of the inner ring rim,

Fig. 5 is a plan view of the groove shown in FIG.

In Fig. 1, a wheel 1 aluminum cylindrical roller bearing is shown, which consists of an outer ring 1 with two radially inward directed rims 2, an inner ring 3 with a radially outward directed rim '♦ and the cylindrical rollers 6 guided in a sheet metal cage 5. The inner ring 3 has on one end face 7 a contact surface 8 with the width C and two

diametrically opposite arranged deep grooves 9, which merge into radially directed flat grooves 10 with a circular cross -section. First, the flat grooves 10 are machined , which initially run over the entire width of the end face 7 (Fig. 2). Then, starting from the outer surface 11 of the rim 4, the deep grooves 9 are embossed in the area of the flat grooves 10, which have base surfaces 12 inclined at an angle oc _to the end face 7 of the inner ring 3 and extend to the contact surface 8. So that the lubricant can flow better into the lubrication groove, it is advantageous to provide the contact surfaces with a bevel 13 (Fig. 5). When the lubrication grooves 9 are impressed, the material of the inner ring 3 bulges up in the flat groove 10 in the area of the contact surface 8 to form a radially directed wave crest 14, which merges into a wave trough 15 on both sides. The wave crest 14 does not protrude axially beyond the contact surface 8 of the inner ring 3, so that the machine element to be supported ("not shown) rests snugly on the contact surface 8.

The lubricant flows through the gap 16 between the rims 2, 4 of the outer ring 1 and the inner ring 3 into the lubrication grooves 9 and then reaches the troughs 15 of the multiple grooves 10. From there it is then distributed to the guide surfaces by the machine element that starts running (not shown).

The innovation is not limited to the example shown. It is possible, for example, to provide the grooves 9, 10 on the outer ring 1, on a washer (not shown) or the like. Furthermore, the arrangement according to the innovation can be used not only for wheel and roller bearings, but also for other types of bearings.

Claims (1)

SKF GmbH ,, .... ,. _>i>( Sqhwe I nf urt, 1989-04-24 j :.':·; ; '"; -Di'e^.pll DE DUP/bl/gr Protection claims Rolling bearings, especially wheel bearings and single roller bearings 1. Rolling bearing, in particular a wheel bearing, which is suitable for absorbing additional axial forces, has an outer and/or an inner ring with rims or the like and has lubrication rods or the like on at least one end face running essentially perpendicular to the bearing axis, characterized in that radially directed grooves (9) are provided starting from the bore or shell surface (11) of the rims (2, 4) or the like, which have base surfaces (12) inclined at an angle oC to the end face (7) of the inner ring (3) and/or the outer ring (1) and extend to a contact surface (8), where they merge into radially running grooves (10), in each of which a radially directed wave crest (14) and two adjacent wave troughs (15) are arranged. 2. Rolling bearing according to claim 1, characterized in that the grooves (10) in the contact surface (8) are flat in comparison with the grooves (9) of the rims (2, 4). 3. Rolling bearing according to claim 1 or 2, characterized in that the grooves (10) have a circular cross-section. » · src · I ry _ _l h. Rolling bearing according to one of claims 1 to 3, characterized in that the wave crest (1Ω) is not arranged to project axially beyond the contact surface (8) of the inner ring (3) and/or the outer ring CD. 5. Rolling bearing according to one of claims 1 to h, characterized in that the contact surfaces (13) of the groove C'j) are arranged obliquely.