公开(公告)号：EP0677136A1

公开(公告)日：1995-10-18

申请号：EP94904628.0

申请日：1994-01-04

申请人： THE INTEGRATED BEARING CO. LTD. ,  BENNETT, Ronald Wilfred Murdoch

发明人： BENNETT, Ronald, Wilfred, Murdoch ,  ISAACS, Lewis, Jeffrey ,  JUMP, Kenneth

IPC分类号： E21B10 ,  F16C17 ,  F16C33

CPC分类号： F16C33/08 ,  E21B10/06 ,  E21B10/12 ,  E21B10/20 ,  E21B10/22 ,  F16C17/10 ,  F16C2352/00

摘要： In an assembly made up of a spindle formed integrally with a revolving cutting element (10), the longitudinal axis of the spindle being the axis of rotation of the cutting element, the spindle is set into a cylindrical bearing (30). The bearing (30) is fixed in the main body (4) of the bit. The bearing element (30) and a plate (60) form a thrust surface with the end of the bearing (30) at right angles to the axis of rotation of the spindle, which the other end of the bearing element made with the flange projecting outwards is held in the cutting element (10) by means of the retaining ring (20) which is fixed in the cutting element. A thrust surface (Y) at right angles to the axis of the rotation of the spindle is created between the top end of the bearing element (30) and the cutting element (10) and another (X) between the retaining ring (20) and the main body (4) of the bit. By maintaining the spindle centrally in the bearing the wear on the bearing is radically reduced.

公开(公告)号：EP0677136B1

公开(公告)日：1996-09-11

申请号：EP94904628.8

申请日：1994-01-04

申请人： THE INTEGRATED BEARING CO. LTD. ,  BENNETT, Ronald Wilfred Murdoch

发明人： BENNETT, Ronald, Wilfred, Murdoch ,  ISAACS, Lewis, Jeffrey ,  JUMP, Kenneth

IPC分类号： E21B10/20 ,  E21B10/22 ,  E21B10/12 ,  E21B10/06 ,  F16C17/10 ,  F16C33/08

CPC分类号： F16C33/08 ,  E21B10/06 ,  E21B10/12 ,  E21B10/20 ,  E21B10/22 ,  F16C17/10 ,  F16C2352/00

摘要： In an assembly made up of a spindle formed integrally with a revolving cutting element (10), the longitudinal axis of the spindle being the axis of rotation of the cutting element, the spindle is set into a cylindrical bearing (30). The bearing (30) is fixed in the main body (4) of the bit. The bearing element (30) and a plate (60) form a thrust surface with the end of the bearing (30) at right angles to the axis of rotation of the spindle, which the other end of the bearing element made with the flange projecting outwards is held in the cutting element (10) by means of the retaining ring (20) which is fixed in the cutting element. A thrust surface (Y) at right angles to the axis of the rotation of the spindle is created between the top end of the bearing element (30) and the cutting element (10) and another (X) between the retaining ring (20) and the main body (4) of the bit. By maintaining the spindle centrally in the bearing the wear on the bearing is radically reduced.