DEVICE FOR CENTRING AND GUIDING THE ROTATION OF A TURBINE ENGINE SHAFT INCLUDING IMPROVED MEANS FOR RETAINING THE EXTERNAL BEARING RING

摘要

The invention relates to a device (10) for centring and guiding the rotation of a turbine engine shaft, in which the outer ring (18) of a bearing is retained axially upstream and downstream by retaining means (52, 72) that engage with a bearing mounting (20) and with coupling means (29) including resiliently deformable means (32) connecting the outer ring to the bearing mounting, said retaining means being separate from a binding band (28) of the device. The invention also provides a method for assembling such a device in which the retaining means (52, 72) are pre-assembled with the coupling means (29) prior to the final assembly of the coupling means with the bearing mounting (20). The device and the method have the combined advantages of axially retaining the outer ring in two opposing directions and having a particularly straightforward assembly.