Externally lubricated bearing and bearing housing design

Abstract

The subject matter of this invention relates to the design of a bearing for which the lubrication method has been improved, hence increasing the service life at high speeds. This innovative design optimizes the interactions between the internal structure of the bearing, its components and the lubrication system, resulting in a longer service life and higher performance in high-speed applications.

Description

[0001] EXTERNALLY LUBRICATED BEARING AND BEARING HOUSING DESIGN

[0002] Technical Field

[0003] The subject matter of this invention relates to the design of a bearing for which the lubrication method has been improved, hence increasing the service life at high speeds. This innovative design optimizes the interactions between the internal structure of the bearing, its components and the lubrication system, resulting in a longer service life and higher performance in high-speed applications.

[0004] Prior art

[0005] In bearing systems, tremors and impacts can cause the cage and inner ring to come into contact with each other, especially in applications operating under heavy loads or at high speeds. This causes the bearing to deviate from its normal operating conditions and increases the likelihood of abrasing.

[0006] Interaction between the cage and the inner ring is usually associated with the following situations:

[0007] High vibration and Shocks: High vibration and sudden shocks occuring in mechanical systems can cause bearing elements to move abnormally. In this case, there may be contact between the cage and the inner ring.

[0008] Uneven Load Distribution : In practices rotating at high speeds or under heavy loads, there may be an uneven load distribution on the bearing elements. This can cause the cage and inner ring to rub against each other.

[0009] Cage Damage: If the cage is damaged, it can cause the bearings to move in undesirable ways and contact the inner ring.

[0010] These circumstances can shorten the life of the bearing, increase friction and wear, and negatively affect performance.

[0011] Especially since the cage is made of a softer material than the other elements of the bearing, wear occurs on the cage. Wear also increases the temperature and causes bearing damage. In order to prevent wearing, different lubrication methods have been tried in the art. For example, in document CN109139708A, the bearing lubrication structure refers to the rotating shaft, the first bearing, the second bearing and the oil collecting ring. The first bearing is put on the rotating shaft; the second bearing is put on the rotating shaft, and the first bearing and the second bearing are lubricated separately; the oil collecting ring is used to collect the waste oil generated after the first bearing and the second bearing are lubricated, and the waste oil is discharged out through the oil collecting ring.

[0012] In these and similar documents, studies on lubrication methods have been carried out, but no solution has been provided for cage wear. In another document US5860747A, the oil to be used for lubricating the cage is mentioned but the lubrication method is not mentioned.

[0013] Aim of the Invention

[0014] The main purpose of the invention is to optimize the interactions between the internal structure of the bearing, its components and the lubrication system to provide a longer service life and higher performance in high speed applications.

[0015] Another purpose of the invention is to relocate the wear point in the bearing, which causes wear on the cage, to a more easily lubricated point and thus to prevent wear on the cage.

[0016] Detailed Description of the Invention

[0017] The figures of the external lubricated bearing and bearing housing design which is subject matter of the invention are as follows;

[0018] Figure - 1 Perspective View of Bearing Housing

[0019] Figure - 2 Perspective View of Bearing

[0020] Figure - 3 Cross-sectional View of Bearing

[0021] Figure - 4 Cross-sectional View of Bearing Housing

[0022] Figure - 5 Prior Technique Cross-sectional View of Bearing The items in the figures above are numbered as follows and will be used accordingly for the remainder of the description:

[0023] 1. Bearing Housing

[0024] 2. Bearing

[0025] 3. Outer Ring

[0026] 4. Inner Ring

[0027] 5. Cage

[0028] 6. Orifice

[0029] 7. Hole

[0030] 8. Orifice Hole

[0031] 9. Orifice Cavity

[0032] 10. Bearing Housing Hole

[0033] 11. Channel

[0034] 12. Wear Area

[0035] 13. Outer Ring Hole

[0036] 14. Lubrication Line

[0037] A. Distance between Cage and Outer Ring

[0038] B. Distance between Cage and Inner Ring

[0039] In rolling bearings, the cage is the part that contacts the inner ring and holds the elements such as balls, rollers, needles, etc. that rotate on the inner ring, keeping them together and preventing them from contacting each other. The cage is not in contact with the inner ring but is positioned closer to the inner ring than the outer ring. Therefore, in case of shaking, unbalanced loads, etc., the cage contacts the inner ring. Since the cage is made of a more easily abradable material than the inner ring, wear occurs on the cage. (Figure - 5) The fact that the wear area is located close to the inner ring, that is, in a place that is both dynamic and difficult to reach inside the bearing, makes it difficult to lubricate and take precautions.

[0040] The subject matter of the invention, an externally lubricable bearing and bearing housing, basically comprising a bearing housing(l) and a bearing(2) comprising an inner ring(4), a cage(5), an outer ring (3). In the invention, it is aimed to change the location of the wear area occuring on the cage and the inner ring as a result of the contact of the cage with the inner ring in the bearing and to move it to a more easily intervened and lubricated place. Accordinglyi the cage(5) was moved closer to the ourter ring(3), which is the static part. The cage(5) was positioned where the distance(A) between the cage(5) and the outer ring(3) is less than the distance(B) between the cage(5) and the inner ring(4).

[0041] A<B

[0042] By this means the contact or probability of contact between the cage(5) and the inner ring(4) has been completely eliminated. The wear area(12), which in the prior art is located where the cage(5) and the inner ring(4) are in contact, is shifted to where the cage(5) and the outer ring(3) are in contact by moving the cage(5) closer to the outer ring(3). (Figure - 3)

[0043] Since the outer ring(3) is a fixed / static element, even though the cage(5) rotates inside the outer ring(3), the position of the wear area(12) does not change relative to the outer ring(3). By this means, it was possible to lubricate the wear area(12) and in order to lubricate it, outer ring holes(13) were drilled on the outer ring(3), which opened to the mentioned wear zone(12). (Figure - 3)

[0044] The oil is transferred to the outer ring holes(13) by means of the orifice that regulates the oil quantity and the channels / holes formed on the bearing housing(l), respectively.

[0045] When the bearing(2) is seated in the bearing housing(l), channels(ll) are cut on the bearing housing(l) at the place corresponding to the outer ring holes(13). A hole(10) is drilled in the bearing housing to send oil into the channels(ll) in the bearing housing. In this hole(10), a threaded orifice cavity(9) is designed for mounting the orifice(6) to control the oil flow rate to the bearing. The orifice(6) is mounted on the bearing housing to control the flow rate. A hole(8) is drilled in the orifice for flow control. Holes(7) are drilled to ensure oil delivery to the hole(8) drilled in the orifice. There is a lubrication I ine(14) connection to transfer oil to the bearing housing(l), orifice cavity(9). (Figure - 4) Therefore, the oil entering the system through the lubrication I ine( 14) connection, first enters the inlet hole(7) on the orifice, then passes through the flow control on the orifice hole(8) and passes into in the bearing housing the hole (10). The oil is conveyed from the bearing housing the hole(10) to the channels(ll) in the bearing housing, preferably perpendicular to the aforementioned hole(10), and reaches the wear area(12) through the outer ring holes(13) on the bearing(2). (Figure - 4)

Claims

CLAIMS1. A externally lubricated bearing housing and a bearing placed within, characterizing in that;- at least one bearing in which the distance(A) from the cage (5) to the outer ring(3) is less than the distance(B) from the said cage (5) to the inner ring (4),- At least one outer ring hole(13) drilled on said outer ring(3) for supplying oil into said bearing(2),- At least one channel(ll) on said bearing housing(l) in a location that corresponds to said outer ring holes(13) when said bearing(2) is seated onto the said bearing housing(l).

2. A externally lubricated bearing housing and a bearing placed within in accordance with Claim 1, characterizing in that; said cross-section of the cage(5) is conical and the conical bottom faces the outer ring(3).

3. A externally lubricated bearing housing and a bearing placed within in accordance with Claim 1, characterizing in that; said bearing housing(l) comprises at least one bearing housing hole(10) on said bearing housing(l) for supplying oil to channels(ll) in said bearing housing(l).

4. A externally lubricated bearing housing and a bearing placed within in accordance with Claim 1 and 3, characterizing in that; said bearing housing hole(10) comprises at least one orifice cavity(9) that allows the assembly of the orifice(6) that controls the flow rate of the oil sent to the bearing.

5. A externally lubricated bearing housing and a bearing placed within in accordance with Claim 1 and 4, characterizing in that; said bearing housing(l) comprises a fitted orifice(6) to provide flow control.

6. A externally lubricated bearing housing and a bearing placed within in accordance with Claim 1 and 5, characterizing in that; said orifice(6) comprises at least one orifice hole(8) that controls the flow.

7. A externally lubricated bearing housing and a bearing placed within in accordance with Claim 1 and 6, characterizing in that; said orifice cavity(9) comprises a lubrication line(14) connection to transfer oil.

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