GB2585834A - Improvements in or relating to bearing arrangements - Google Patents

Improvements in or relating to bearing arrangements Download PDF

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Publication number
GB2585834A
GB2585834A GB1910155.9A GB201910155A GB2585834A GB 2585834 A GB2585834 A GB 2585834A GB 201910155 A GB201910155 A GB 201910155A GB 2585834 A GB2585834 A GB 2585834A
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GB
United Kingdom
Prior art keywords
bearing
nitride layer
bearing member
titanium
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB1910155.9A
Other versions
GB201910155D0 (en
Inventor
Essam Steve
Bhatti Mohammed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MinebeaMitsumi Inc
Original Assignee
MinebeaMitsumi Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MinebeaMitsumi Inc filed Critical MinebeaMitsumi Inc
Priority to GB1910155.9A priority Critical patent/GB2585834A/en
Publication of GB201910155D0 publication Critical patent/GB201910155D0/en
Publication of GB2585834A publication Critical patent/GB2585834A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/043—Sliding surface consisting mainly of ceramics, cermets or hard carbon, e.g. diamond like carbon [DLC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C11/00—Pivots; Pivotal connections
    • F16C11/04—Pivotal connections
    • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/121—Use of special materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/125—Details of bearing layers, i.e. the lining
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/122—Multilayer structures of sleeves, washers or liners
    • F16C33/127—Details of intermediate layers, e.g. nickel dams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/10—Alloys based on copper
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/30—Alloys based on one of tin, lead, antimony, bismuth, indium, e.g. materials for providing sliding surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/40—Alloys based on refractory metals
    • F16C2204/42—Alloys based on titanium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2206/00—Materials with ceramics, cermets, hard carbon or similar non-metallic hard materials as main constituents
    • F16C2206/40—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal
    • F16C2206/58—Ceramics, e.g. carbides, nitrides, oxides, borides of a metal based on ceramic nitrides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
    • F16C23/045—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain bearings
    • F16C23/046—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings for radial load mainly, e.g. radial spherical plain bearings with split outer rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/046—Brasses; Bushes; Linings divided or split, e.g. half-bearings or rolled sleeves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

A spherical bearing arrangement 1 is provided. The bearing arrangement 1 comprises: an outer bearing member 2 formed from either titanium or steel 20 and having a nitride layer 21, providing a first bearing surface 6; and an inner bearing member 3 also formed from either of titanium or steel 30 and having a copper- nickel-indium bearing material layer 31, providing a second bearing surface 8. The inner bearing member 3 is receivable in the outer bearing member 2 such that the first bearing surface 6 and second bearing surface 8 contact one another in a sliding bearing interface. The outer bearing member 2 may additionally include a further titanium nitride layer 22. A method of manufacturing such a spherical bearing is also disclosed.

Description

Title: Improvements in or relating to bearing arrangements Description of Invention The present invention relates to a bearing arrangement and a method of manufacture thereof.
A bearing arrangement generally comprises an outer bearing member and an inner bearing member. The inner bearing member is received within the outer bearing member, such that the inner bearing member may move relative to the outer bearing member. The inner bearing member is retained within the outer bearing member. The inner bearing member may be retained within the outer bearing member to substantially restrict all relative translational movement. The inner bearing member may be retained within the outer bearing member additionally to substantially restrict rotational movement about 1 or 2 axes.
In a spherical bearing, the inner bearing member generally takes the form of a ball member, having a bore. The ball member comprises an outer bearing surface which is substantially spherical. The housing of a spherical bearing comprises a corresponding substantially spherical inner bearing surface. When the ball member is captured within the spherical bearing housing, the respective bearing surfaces are in sliding contact with one another. A spherical bearing may restrict all relative translational movement but allow relative rotational movement about all axes.
A spherical bearing may comprise a unitary bearing housing and a unitary ball member, and the bearing housing may be swaged around the ball member during assembly to capture it. Alternatively, the bearing housing may comprise two or more parts (a so-called split housing), which may be arranged around the ball member and be secured to one another to capture the ball member. Alternatively, or additionally, the ball member may be comprised of two or more parts (a so-called split ball). A sleeve or bushing may be arranged in the bore of the assembled ball members.
Other types of bearing are known, in which the inner bearing member and outer bearing member comprise non-spherical bearing surfaces, such as cylindrical or elliptical bearing surfaces. Such arrangements may restrict relative rotation of the inner and outer bearing members to only one axis.
Regardless of the type of bearing, a bearing interface is created in use between the two bearing surfaces. Bearing arrangements find applications in the aerospace and automotive industries, and are often required to withstand very high loads applied in different directions. At the same time, there is a requirement to reduce the weight and cost of bearing arrangements, whilst still providing a reliable arrangement with a very low risk of failure.
It is an object of the present invention to provide an improved bearing arrangement and associated method.
Accordingly, the present invention provides a bearing arrangement comprising: an outer bearing member comprised of titanium or steel and having a nitride layer, providing a first bearing surface; and an inner bearing member comprised of titanium or steel and having a coppernickel-indium layer, providing a second bearing surface, wherein the inner bearing member is receivable in the outer bearing member such the first bearing surface and second bearing surface contact one another in a sliding bearing interface.
In at least one embodiment, the outer bearing member comprises a first nitride layer and second titanium nitride layer on the first nitride layer.
In at least one embodiment, the outer bearing member is a bearing housing.
In at least one embodiment, the bearing housing is a spherical bearing housing, having a substantially spherical first bearing surface.
In at least one embodiment, the outer bearing member is a sleeve which is receivable in a housing.
In at least one embodiment, the inner bearing member is a ball member comprising a spherical second bearing surface.
There is also provided a method of manufacturing a bearing, comprising: providing a titanium or steel outer bearing member; providing a nitride layer on the outer bearing member to form a first bearing surface; providing a titanium or steel inner bearing member; and providing a copper-nickel-indium layer on the inner bearing member to form a second housing bearing surface; In at least one embodiment, the method further comprises: providing a titanium nitride layer on the nitride layer of the outer bearing member to form the first bearing surface.
In at least one embodiment, the method further comprises: capturing the inner bearing member in the outer bearing member such that the first bearing surface and second bearing surface contact one another in a sliding bearing interface.
The present invention will now be described, by way of example only, with reference to the accompanying figures, in which: FIGURE 1 is a perspective view of a spherical bearing arrangement; and FIGURE 2 is a cross-sectional view of the spherical bearing arrangement of Figure 1 along line A-A; and FIGURE 3 is a schematic cross-sectional view of a bearing arrangement embodying the present invention.
Figures 1 and 2 show a spherical bearing arrangement 1, comprising: a bearing housing 2 (the outer bearing member); and a ball 3 (inner bearing member) mounted therein. The bearing housing 2 is substantially annular and comprises a cylindrical outer surface 4 with two axial end faces 5 and an inner surface 6 comprising a spherical housing bearing surface (a first bearing surface). The bearing housing 2 further has a central axis 7. The ball 3 is substantially spherical in shape, with a spherical bearing surface 8 (second bearing surface) conforming to the housing bearing surface 6 such that the bearing surfaces 6,8 are in sliding contact with one another so as to form a sliding bearing interface. In this example, the ball 3 has an axial end face 9 at either end of a bore 10 passing through the ball 3. The bore 10 has a central axis 11 passing therethrough and, in use, a shaft is often inserted in the bore 10 (not shown).
Figure 3 is a schematic cross-sectional view of a bearing arrangement embodying the present invention. The bearing housing 2 (outer bearing member) is schematically illustrated as comprising a substrate 20. The substrate 20 of the bearing housing 2 -i.e. the bulk of the bearing housing 2 -comprises titanium or steel. On the titanium or steel substrate 20 of the bearing housing 2 is provided a nitride layer 21. It should be noted that although figure 3 may appear to illustrate that the substrate 20 and nitride layer 21 are the same thickness, this may not be the case. The nitride layer 21 is a relatively thin layer on the titanium or steel substrate 20. Figure 3 is purely schematic to aid the reader's understanding. In one embodiment, on the nitride layer 21 is further provided a titanium nitride layer 22. The thickness of the titanium nitride layer 22 may be greater or less than the thickness of the nitride layer 21. The titanium nitride layer 22 provides the housing bearing surface 6 (first bearing surface). If the titanium nitride layer 22 is not present, the nitride layer 21 provides the bearing surface 6.
The ball 3 is illustrated as having a titanium or steel substrate 30. As with the layers 20, 21, 22 of the bearing housing 2, the apparent thickness of the layers 30, 31 in figure 3 of the ball 2 are purely illustrative and are not to be seen as teaching any particular thicknesses of the layers 30 or 31.
A copper nickel-indium layer 31 is provided on the titanium or steel substrate 30 of the ball 3 (inner bearing number). The copper nickel-indium layer 31 provides the spherical bearing surface 8 (second bearing surface). In figure 3, there is shown a gap between the bearing surfaces 6, 8. This is purely to aid the illustration of the composition of the layers of the bearing arrangement. In use, the bearing surfaces 6, 8 are in a sliding interface with one another.
Preferably, the material of the substrate 20, 30 of both the housing 2 and ball 3 are substantially the same.
A benefit of the nitride layer 21 is that it serves to harden the substrate 20 to provide a surface to which the titanium nitride layer 22 may better adhere. The nitride layer 21 serves as an interlayer, which has a better affinity to the neighbouring substrate 20 and titanium nitride layer 22 than would the substrate 20 and titanium nitride layer 22 have to each other. Application of the titanium nitride layer 22 (a relatively hard coating) directly onto the (relatively soft) substrate 20, such as Titanium (Ti64), may result in cracking of the titanium nitride layer 22.
The nitride layer 21 is harder than the substrate 20. The substrate 20 may or may not be machined prior to providing the nitride 21 and titanium nitride 22 layers. Some surface roughness of the substrate 20 may be beneficial for the application of the nitride layer 21, to ensure that it keys sufficiently to the titanium or steel of the substrate 20. No machining of the nitride layer 21 may be needed before the application of the titanium nitride layer 22. The interlayer of the nitride layer 21 may also provide better load bearing capabilities.
The copper nickel-indium layer 31 may be softer than the titanium nitride layer 22.
When used in this specification and claims, the terms "comprises" and "comprising" and variations thereof mean that the specified features, steps or integers are included. The terms are not to be interpreted to exclude the presence of other features, steps or components.
The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.
Although certain example embodiments of the invention have been described, the scope of the appended claims is not intended to be limited solely to these embodiments. The claims are to be construed literally, purposively, and/or to encompass equivalents.

Claims (9)

  1. CLAIMS1. A bearing arrangement comprising: an outer bearing member comprised of titanium or steel and having a nitride layer, providing a first bearing surface; and an inner bearing member comprised of titanium or steel and having a coppernickel-indium layer, providing a second bearing surface, wherein the inner bearing member is receivable in the outer bearing member such the first bearing surface and second bearing surface contact one another in a sliding bearing interface.
  2. 2. A bearing arrangement according to claim 1, wherein the outer bearing member comprises a first nitride layer and second titanium nitride layer on the first nitride layer.
  3. 3. A bearing arrangement according to any preceding claim, wherein the outer bearing member is a bearing housing.
  4. 4. A bearing arrangement according to claim 3, wherein the bearing housing is a spherical bearing housing, having a substantially spherical first bearing surface.
  5. 5. A bearing arrangement according to any of claims 1 and 2, wherein the outer bearing member is a sleeve which is receivable in a housing.
  6. 6. A bearing arrangement according to any preceding claim, wherein the inner bearing member is a ball member comprising a spherical second bearing surface.
  7. 7. A method of manufacturing a bearing, comprising: providing a titanium or steel outer bearing member; providing a nitride layer on the outer bearing member to form a first bearing surface; providing a titanium or steel inner bearing member; and providing a copper-nickel-indium layer on the inner bearing member to form a second housing bearing surface;
  8. 8. A method according to claim 7, further comprising: providing a titanium nitride layer on the nitride layer of the outer bearing member to form the first bearing surface.
  9. 9. A method according to claim 7 or 8, further comprising capturing the inner bearing member in the outer bearing member such that the first bearing surface and second bearing surface contact one another in a sliding bearing interface.
GB1910155.9A 2019-07-16 2019-07-16 Improvements in or relating to bearing arrangements Withdrawn GB2585834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1910155.9A GB2585834A (en) 2019-07-16 2019-07-16 Improvements in or relating to bearing arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1910155.9A GB2585834A (en) 2019-07-16 2019-07-16 Improvements in or relating to bearing arrangements

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Publication Number Publication Date
GB201910155D0 GB201910155D0 (en) 2019-08-28
GB2585834A true GB2585834A (en) 2021-01-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2609707A (en) * 2021-05-26 2023-02-15 Skf Ab Plain bearing having coated outer and inner rings

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848934A (en) * 1985-01-11 1989-07-18 The Boeing Company Lightweight high performance titanium sliding contact bearing
GB2412701A (en) * 2004-03-31 2005-10-05 Minebea Co Ltd A metal-to-metal spherical bearing
CN109751332A (en) * 2017-11-02 2019-05-14 十堰昶泽汽车零部件有限公司 Automobile bearing anti-attrition protective layer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4848934A (en) * 1985-01-11 1989-07-18 The Boeing Company Lightweight high performance titanium sliding contact bearing
GB2412701A (en) * 2004-03-31 2005-10-05 Minebea Co Ltd A metal-to-metal spherical bearing
CN109751332A (en) * 2017-11-02 2019-05-14 十堰昶泽汽车零部件有限公司 Automobile bearing anti-attrition protective layer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2609707A (en) * 2021-05-26 2023-02-15 Skf Ab Plain bearing having coated outer and inner rings
US12071980B2 (en) 2021-05-26 2024-08-27 Aktiebolaget Skf Plain bearing having coated outer and inner rings

Also Published As

Publication number Publication date
GB201910155D0 (en) 2019-08-28

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