Patent ID: 7017381

Claim:
A fastening apparatus for axially urging a cylindrical bearing into a retained position on a roll at which retained position an end of the roll projects through and beyond an end of the bearing, said apparatus comprising: an annular housing configured and dimensioned to be axially mounted on the roll end at a location adjacent to the end of the bearing; fastening means for engaging an abutment on the roll end in a manner resisting axial movement of said housing away from the bearing; an annular piston axially shiftable within said housing; a plurality of spring member acting on said piston at circumferentially spaced locations around said housing, said spring members serving to exert resilient forces urging said fastening means against said abutment and acting via said piston to urge said bearing into said retained position; and fluid pressure means acting on said piston to relieve said resilient forces and thereby accommodate mounting on and removal of said fastening apparatus from the roll end.