A bearing for guiding a first guided piece with respect to a second guided piece, comprising:
- a first bearing surface;
- a second bearing surface integral in displacement with said second guided piece, a translational sliding guiding contact being provided between said first bearing surface and said second bearing surface with the first guided piece and the second guided piece moving relative to each other along an axial direction;
- at least one first intermediate piece interposed between said first bearing surface and said first guided piece;
- and
- at least one first automatic release assembly, wherein, i) in one state, named an assembly state, said at least one first automatic release assembly fixedly attaches said at least one first intermediate piece and said first guided piece,
- said at least one first automatic release assembly being in said assembly state when guidance forces, between said first guided piece and said second guided piece, are lower than a value, named triggering value of said first assembly,
- ii) in at least one state, named a release state, said at least one first automatic release assembly allows relative translation sliding displacement of said first guided piece with respect to said at least one first intermediate piece, with the first guided piece and said at least one first intermediate piece moving relative to each other along the axial direction, said at least one first automatic release assembly being in said release state when the guidance forces, between said first guided piece and said second guided piece, are greater than said triggering value of said first assembly,
- said at least one first automatic release assembly comprising at least one deformable piece deformable under an effect of a constraint, between said at least one first intermediate piece and said first guided piece, that is higher than a predetermined value corresponding to said triggering value of said first assembly, said at least one deformable piece forming part of a first deformable conjugated assembly.