Title:
削岩機と軸方向ベアリング
Document Type and Number:
Japanese Patent JP4490289
Kind Code:
B2
Abstract:
An axial bearing includes a first piston and a second piston. Axial contact surfaces between the pistons are arranged in the same pressure space. The same pressure fluid fed to the axial bearing acts on the contact surfaces and on working pressure surfaces of the pistons. A rock drilling machine is also provided with such an axial bearing.
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Inventors:
Muutnen, Timo
Lantala, bait
Lantala, bait
Application Number:
JP2004564253A
Publication Date:
June 23, 2010
Filing Date:
December 29, 2003
Export Citation:
Assignee:
SANDVIK MINING AND CONSTRUCTION OY
International Classes:
B25D17/26; E21B1/00; E21B1/12; E21B1/38; F16C17/04
Domestic Patent References:
| JP2005527388A | ||||
| JP2919897B2 | ||||
| JP11513319A | ||||
| JP9109064A | ||||
| JP2004502059A |
Foreign References:
| US5896937 |
Attorney, Agent or Firm:
Takao Katori