Patent ID: 6220820
Filing Date: 2001-04-24
Classification: B64C,F16C

Abstract:
A bearing arrangement for holding a blade root of a propeller blade within a propeller hub, the bearing arrangement adapted to engage with the fixing region of the propeller blade and having a preload arrangement for preloading a bearing, comprising a first member having a first bearing surface movable with respect to a second member having a second bearing surface so as to bear against at least one bearing located between the first and second bearing surfaces, characterized by a fluid operated actuator for urging the first member to move with respect to the second member so as to apply a load to the at least one bearing, and a mechanical locking arrangement comprising a threaded portion located on the first member and retaining nut which engages the threaded portion and which, in use, bears against a fixed surface thereby locking the first member against return movement.