Plain bearing

• US 20040008914A1
• Filed: 04/21/2003
• Published: 01/15/2004
• Est. Priority Date: 06/14/2002
• Status: Abandoned Application

• Current Assignee: Daido Metal Company Limited
• Original Assignee: Daido Metal Company Limited
• Inventors: Fujita, Masahito, Nakajima, Hideyuki, Tanaka, Takuya, Shibayama, Takayuki, Hiramatsu, Nobutaka
• Application Number:
  US10/419,476
• Publication Number:
  US 20040008914A1
• Time in Patent Office: Days
• US Class Current: 384/276
• CPC Class Codes: F16C 33/201 Composition of the plastic

Abstract

The present invention provides a plain bearing comprising a substrate and a sliding layer provided on the surface of the substrate which is improved in bearing performances, particularly, wear resistance. According to the present invention, the sliding layer 2 provided on the surface of the substrate 1 comprising a steal material or stainless steal contains polybenzimidazole (PBI) and 1-70 vol% of a solid lubricant. PBI is superior in heat resistance to thermosetting resins (PAI, PI, EP resins) and, besides, high in material strength, and thus wear resistance and anti-seizure property can be improved.

Claims

1. A plain bearing which comprises a substrate comprising a steel material or stainless steel and a sliding layer provided on the surface of the substrate, said sliding layer containing polybenzimidazole and 1-70 vol % of a solid lubricant.

2. A plain bearing according to claim 1, wherein the solid lubricant comprises at least one member of polytetrafluoroethylene, graphite and molybdenum disulfide.

3. A plain bearing according to claim 1, wherein the sliding layer contains 0.1-10 vol % of hard particles.

4. A plain bearing according to claim 2, wherein the sliding layer contains 0.1-10 vol % of hard particles.

5. A plain bearing according to claim 1, wherein the sliding layer contains 0.1-15 vol % of an oil.

6. A plain bearing according to claim 2, wherein the sliding layer contains 0.1-15 vol % of an oil.

7. A plain bearing according to claim 3, wherein the sliding layer contains 0.1-15 vol % of an oil.

8. A plain bearing according to claim 4, wherein the sliding layer contains 0.1-15 vol % of an oil.

9. A plain bearing according to claim 1, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

10. A plain bearing according to claim 2, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

11. A plain bearing according to claim 3, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

12. A plain bearing according to claim 4, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

13. A plain bearing according to claim 5, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

14. A plain bearing according to claim 6, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

15. A plain bearing according to claim 7, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.

16. A plain bearing according to claim 8, wherein a bonding layer comprising a thermosetting resin is provided between the substrate and the sliding layer.