Patent ID: 8961017
Filing Date: 2015-02-24
Classification: B23P,F16C,Y10T

Abstract:
1. A sleeve for use in repairing a shaft having an unworn diameter and a worn diameter along a portion of a length of the shaft resulting from bearing operation thereon, the sleeve providing a bearing surface for a split bearing, and the sleeve comprising: a. the sleeve having two halves, each with a substantially identical length, and the halves, when joined, defining a cylinder with a longitudinal centerline, said sleeve having an inner diameter adapted to firmly engage a portion of the unworn diameter of the shaft at each end of the sleeve; b. a plurality of bolt holes machined into each of the sleeve halves adapted to releasably affix the halves together, each of said bolt holes having a centerline axis that extends perpendicular to respective first radial lines of said cylinder, and said centerline axis of each bolt hole also being perpendicular to a longitudinal line that extends parallel with the longitudinal centerline of the cylinder and intersects with said respective first radial lines, and bolts received in said bolt holes for attaching the halves together; c. a plurality of dowel holes defined in at least one intersection between the halves, said dowel holes each being cylindrical with a first semi-cylindrical portion defined on one of the sleeve halves and a second semi-cylindrical portion defined on the other sleeve halve, said dowel holes each having a longitudinal centerline axis that extends along respective second radial lines of said cylinder, the longitudinal centerline axes of said dowel holes being perpendicular with a plane containing the centerline axes of said bolt holes, and dowels received in the dowel holes to maintain said halves in non-moving engagement with one another; d. the bearing surface defined on an external surface of the sleeve; e. the split bearing adapted to engage the bearing surface; and f. said sleeve being split into said two halves along a plane that is perpendicular to the centerline axes of said bolt holes and coplanar with the longitudinal centerline axes of said dowel holes.