DE2130953A1 - Cylindrical roller or needle roller bearings with an inclined bearing surface - Google Patents

Description

22nd JlH

Ci- ■ '■ ·· ■' ■ C. Wa'lach

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Dr. Γ. Hi ^v "ch

8 mu -. ^ 3.1 2

Kaufingerstr. 8. ToI. 240275

Soclete anonymous dite: SKF COMPAONIE D "APPLICATIONS MECANIQUES

Clamart / France Cylindrical roller or needle roller bearings with an inclined bearing surface

The invention relates to cylindrical roller bearings or needle roller bearings with an inclined bearing surface.

Known bearings of this type usually have on the inner bearing ring, especially in the case of conical bearing surfaces, two shoulders, each arranged at one end, which Ensure the guidance of the clumps in both directions and the rest of the cage and the rollers on the inner bearing ring attach. The manufacture of these shoulders and, in particular, the conical bearing surface which, with respect to the Shoulders set back is difficult and adds to the price and space requirement of the storage.

The invention has for its object to report these disadvantages and the manufacture of the bearing, in particular To simplify its inner ring and reduce the space required.

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This object is achieved in that a bearing inner ring is created, the outside by a frustoconical bearing surface is limited and with simple flat outer surfaces ends, and that a bearing cage is used, which ensures the spacing and guidance of the rollers with the help of simple windows that moreover act as an axis for each role, this one Cage has two bent edges directed towards the center, each on one of the outer end faces of the bearing inner ring.

The invention is explained in more detail below with reference to the embodiments shown in the drawing.

In the drawing show: Fig. 1 is an axial half section of the bearing unit Fig. 2 is a corresponding half section of a

further exemplary embodiment

Flg. 3 a further axial half section of a Needle bearing Fig. 4 is an axial half section of another

Embodiment according to the invention with a Plastic cage.

As can be seen from FIG. 1, the bearing inner ring 1 is of the bearing according to the invention on the outside by a frustoconical Bearing surface 2 limited, the width of which is slightly greater than the length of the rollers 3. This camp

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inner ring 1 has no shoulders and it is easier Catfish on both sides by flat exterior surfaces 4 and 5 limited to the one with the center hole of the bearing ring are connected by fillets. The bearing cage 7 », which consists for example of sheet metal, has rectangular window 8, the length of which corresponds to the length of a roller 3 with a slight play and its width is less than the diameter of the roller 3, this window in a known manner above the axis of the roller is arranged. In this way, the rollers 3 cannot escape to the outside with respect to the cage.

The cage 7 also has two bent edges 9 and 10, which are bent inward, as shown in FIG. 1 is shown, and the ends of which bear against the outer end surfaces 4 and 5 of the inner bearing ring 1. This cage ensures that the rollers are guided «

To carry out the assembly, the bent edge 10 located on the side of the large conical base area is only used partially bent, as indicated by dashed lines in Flg. 1 shown 1st. After the rolls in the windows have been brought into place and the bearing inner ring 1 has been introduced, the edge 10 is made with the aid of a press or bent by pushing back against the face 5 of the bearing *

In a modified version shown in Fig. 2 * - example, the bent edge 10 with recesses for Delimitation of a certain number of teeth 11 * be provided, which after assembly in simple catfish against the End face 5 are bent, as described welter above became. It is also possible to use the KXfIg with

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ORSOLNAL INSPECTED

RKndern 9 and 10, which are already their final Position, and then to carry out the assembly by elastic deformation of the KKfige. In this case it can the KKfIg 7 advantageously made of molded plastic material be made, for example from injection-molded polyamides, the windows 8 by concave cylindrical receptacles 8a are replaced, in which the rollers 3 are elastically fitted.

The bearing outer ring 12 is through in the usual way a conical bearing surface ij> limited and its two outer sides are limited by flat end faces 14 and 15.

It can thus be seen that the storage unit is extremely easy to manufacture, align, control and assemble and that, on the other hand, it takes up less space is than the space requirement of a conventional roller bearing with an inclined bearing surface and a guide with the help of Shoulders.

The invention can be used in the same way for bearings with needles, as shown in FIG.

It is understood that the embodiments described above represent no limitation and that various changes mentioned are possible without the To leave the basic idea of the invention.

Claim t

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Claims (2)

Patent claims: 1. Cylindrical roller or needle roller bearings with an inclined bearing surface, characterized in that both the inner ring of the bearing and the outer ring of the bearing Kegeleturapfförraige have bearing surface on each Side is limited by an outer face, and that the bearing cage, which the rolling elements with the help of calibration windows extending above its axis hold on to each Side has a bent edge directed towards the center, which extends to the corresponding outer end face of the bottom bracket ring. 2. Bearing according to claim 1, characterized in that one of these bent edges is a Series of recesses' has a certain number of ten whose outside rests against the corresponding end face of the bearing inner ring. 109853/1307 Empty soap