Shield for labyrinth seal

摘要

A shield for disposition between a lubricated bearing and a labyrinth seal in a gas turbine engine having a rotating member rotatable about a vertical axis, the shield preventing lubricant contamination of the seal. The shield includes an inner helical baffle on the rotating member between the bearing and the seal and an outer helical baffle on a stationary support between the inner baffle and the seal. The inner and outer baffles radially overlap to foreclose lubricant drip onto the seal and have corresponding helical leads so that the inner baffle can be threaded through the outer baffle when the rotating member is installed on the support.