Torque tube bearing assembly

摘要

A bearing assembly (80) for use in a gas turbine engine to rotatably mount a torque tube in an access hole extending through a fan duct. The torque tube connects a variable stator vane bell crank positioned inside the fan duct to an actuator positioned outside the fan duct. The bearing assembly (80)includes a bearing (60) having a spherical external engagement surface (62) and a housing (70) having a flange and an annular interior surface (72) having an inner edge (74) and an outer edge (76). The interior surface (72) is sized and shaped for rotatably receiving the spherical external engagement surface (62) of the bearing (60) so the spherical engagement surface (62) and the annular interior surface (72) make contact along an annular contact area (100) centered on a contact plane (102) lying between the inner and outer edges (76). The contact plane (102) is tilted with respect to the flange at an angle (104) greater than five degrees.