An oil recovery.

It comprises two bearing supports (19) and (23) mounted on an inter-turbine casing (25), a first and a second bearing (2, 4) mounted on the bearing blocks, a low-pressure turbine journal (20 ) rotatably mounted with respect to the inter-turbine casing (25), a fixed collar (48) and an oil passage (44) provided in the low-pressure turbine journal (20) for delivering oil to the within the fixed shroud (48). The ferrule widens preferably starting from the end to which oil is supplied.