发明授权
- 专利标题: Hydrodynamic type porous oil-impregnated bearing
- 专利标题(中): 流体动力型多孔含油轴承
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申请号: US09033651申请日: 1998-03-03
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公开(公告)号: US06299356B1公开(公告)日: 2001-10-09
- 发明人: Kazuo Okamura , Yasuhiro Yamamoto , Isao Komori , Natsuhiko Mori , Makoto Shiranami
- 申请人: Kazuo Okamura , Yasuhiro Yamamoto , Isao Komori , Natsuhiko Mori , Makoto Shiranami
- 优先权: JP9-051857 19970306; JP9-081535 19970331; JP9-081536 19970331
- 主分类号: F16C1702
- IPC分类号: F16C1702
摘要:
The porous oil-impregnated bearing 1 comprises a bearing body 1a made of a porous material, and oil retained in the pores of the bearing body 1a by impregnation with lubricating oil or lubricating grease. The inner peripheral surface of the bearing body 1a is formed with a bearing surface 1b opposed to an outer peripheral surface of a shaft to be supported, with a bearing clearance defined therebetween. The bearing surface 1b has a first region m1 in which a plurality of hydrodynamic pressure generating grooves 1c inclined in one direction with respect to the axial direction are circumferentially disposed, a second region m2 which is axially spaced from said first region m1 and in which a plurality of hydrodynamic pressure generating grooves 1c inclined in the other direction with respect to the axial direction are circumferentially disposed, and an annular smooth region n disposed between the first and second regions m1 and m2.