公开(公告)号：US06637528B2

公开(公告)日：2003-10-28

申请号：US09832231

申请日：2001-04-11

申请人： Akio Nishiyama ,  Osamu Nakamura ,  Kazutaka Kanda ,  Masahiro Arai ,  Kunio Komaki

发明人： Akio Nishiyama ,  Osamu Nakamura ,  Kazutaka Kanda ,  Masahiro Arai ,  Kunio Komaki

IPC分类号： E21B1022

CPC分类号： E21B10/22 ,  F16C33/04 ,  F16C2352/00

摘要： A bit apparatus in which a cutter member having cutting teeth is axially supported on a shaft for rotation about the shaft, and a bearing mechanism is interposed between the cutter member and the shaft. The bearing mechanism includes at least a radial bearing for bearing a radially directed load and a thrust bearing for bearing an axially directed load. The radial bearing has a shaft-side split bearing member and a cutter-side split bearing member that are opposed to or in sliding contact with each other and capable of rotating relative to each other.

摘要翻译： 一种具有切割齿的切割构件被轴向支撑在轴上用于围绕轴旋转的位装置，并且轴承机构插入在切割器构件和轴之间。 轴承机构至少包括用于承载径向载荷的径向轴承和用于承载轴向定向载荷的止推轴承。 径向轴承具有彼此相对或相互滑动接触并且能够相对旋转的轴侧分离轴承部件和切割器侧分离轴承部件。