Bearing support trunnion for shaft of turbomachine i.e. twist spool and front fan integrated turbojet engine, has blind lubrication bores, each having opening access unit of channel in bore to pass machining tool for machining opening

摘要

The trunnion (400) has longitudinal inner lubrication channels (430) arranged in a wall of the trunnion, where the trunnion is formed in INCONEL(RTM: nickel-base alloy). Radial blind lubrication bores (410) are arranged in an inner surface of the trunnion, where the bores communicate an inner space of the trunnion with the channels. Each channel emerges into the lubrication bore. Each bore includes an access unit for accessing an opening (415) of the channel in the bore for permitting the passage of machining tool through the front of turbomachine for machining the opening.