Multilayer plain bearing

• US 7,226,213 B2
• Filed: 12/03/2002
• Issued: 06/05/2007
• Est. Priority Date: 12/04/2001
• Status: Expired due to Term

• Current Assignee: Federal-Mogul Deva GmbH (Apollo Global Management, Inc.)
• Original Assignee: Federal-Mogul Deva GmbH (Apollo Global Management, Inc.)
• Inventors: Kraft, Erik, Roos, Udo
• Primary Examiner(s): Hannon; Thomas R.
• Application Number:
  US10/497,937
• Publication Number:
  US 20050141791A1
• Time in Patent Office: 1,645 Days
• Field of Search: 384297-300, 384/276, 384/911
• US Class Current: 384/298
• CPC Class Codes: F16C 33/04 Brasses; Bushes; Linings
• CPC Class Codes: F16C 33/201 Composition of the plastic
• CPC Class Codes: F16C 33/28 with embedded reinforcements shaped as frames or meshed materials
• CPC Class Codes: Y10S 384/911 including fiber

Abstract

A multi-layer plane bearing has a bearing layer and a gliding layer connected to it. The gliding layer includes at least one thread layer treated with an epoxy resin. The thread layer is made up of a multitude of threads of at least one thread type arranged in a given pattern. Each thread includes at least one primary thread component made of spun PTFE/polyethersulfone mixed fiber yarn and at least one secondary component made of spun polyethersulfone fiber. There thread components are twisted in shaping the threads.

Claims

1. Multi-layer plane bearing with a bearing layer and a gliding layer connected to it, in which the gliding layer contains polytetrafluorethylene fibers and polyethersulfone fibers, which are provided with a resin, characterized by the fact that the gliding layer contains at least one thread layer treated with an epoxy resin, consisting of a multitude of threads of at least one thread type arranged according to a given pattern, in which each thread exhibits at least one primary thread component made of spun polytetrafluorethylene/polyethersulfone mixed fiber yarn and at least one secondary component made of a spun polyethersulfone fiber, and that the minimum of two thread components are twisted in shaping the threads.

2. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the thread layer is formed from a single thread type, arranged according to the given sample pattern.

3. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the thread type is a double thread.

4. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the secondary thread component is a polyethersulfone fiber yarn.

5. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the weight ratio of polytetrafluorethylene to polyethersulfone in the thread varies between 1:

1.8 and 1;

2.2.

6. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the weight ratio of polytetrafluorethylene to polyethersulfone in the primary thread component varies between 0.9:

1.1 and 1.1;

0.9.

7. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the primary thread component exhibits a yarn rotation between 300 rotations/m and 800 rotations/m.

8. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the secondary thread component exhibits a yarn rotation between 300 rotations/m and 800 rotations/m.

9. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the thread type exhibits a yarn rotation between 80 rotations/m and 400 rotations/m.

10. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the primary and/or secondary thread component has a total denier between 100 dtex and 600 dtex.

11. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the primary and/or secondary thread component has an individual fiber denier between 0.8 dtex and 4 dtex.

12. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the thread layer exhibits a multitude of threads running in the first direction, arranged parallel to one another, and a multitude of threads running in a second direction, also arranged parallel to one another, in which the first direction forms a 90°

angle relative to the second direction.

13. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the threads in the thread layer are embedded in the epoxy resin.

14. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the epoxy resin is treated with at least one abrasion-reducing addition.

15. Multi-layer plane bearing as claimed in claim 14, characterized by the fact that the wear-reducing addition in the epoxy resin includes metal sulfides, including at least one of molybdenum sulfide and/or tungsten sulfide, graphite, boron nitride, preferably hexagonal boron nitride, iron-III-oxide, barium sulfate and/or polytetra-fluorethylenes.

16. Multi-layer plane bearing as claimed in claim 14, characterized by the fact that minimum of one wear-reducing addition exhibits a particle size between 8 μ

m and 30 μ

m.

17. Multi-layer plane bearing as claimed in claim 14, characterized by the fact that the minimum of one wear-reducing addition is contained in the epoxy resin in a concentration of 2 weight-% to 20 weight-% relative to the weight of the epoxy resin.

18. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the bearing layer includes at least one additional epoxy resin and glass fibers.

19. Multi-layer plane bearing as claimed in claim 18, characterized by the fact that the additional epoxy resin of the bearing layer is identical with the epoxy resin of the gliding layer.

20. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the plane bearing is formed as a cylindrical sleeve with an enclosed gliding layer or as a plate-like bearing.

21. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the primary thread component exhibits a yarn rotation between 400 rotations/m and 700 rotations/m.

22. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the secondary thread component exhibits a yarn rotation between 400 rotations/m and 700 rotations/m.

23. Multi-layer plane bearing as claimed in claim 1, characterized by the fact that the thread exhibits a yarn rotation between 120 rotations/m and 250 rotations/m.