A temporary support member for a sensor unit of a bearing assembly, said support member being stackable with a similar support member when a sensor unit (7, 7') is mounted on each one of said support member and said similar support member wherein: - said temporary support member comprises: - a first part for accommodating at least a part of a sensor body of said sensor unit - a second part for accommodating, in a coiled configuration, a cable connected to said sensor body and - a third part for accommodating a connector mounted at a free end of said cable. - said first part and said second part are circular and centered on a common axis and - along said common axis, said second part is located between said first and third parts (10, 30), and characterized in that: - said first part comprises a generally cylindrical skirt member centered on common axis and extending axially away from a disc-like annular portion perpendicular to said common axis, - said second part is defined between said annular portion of said first part and a disc which belongs to said third part, wherein said second part includes a cylindrical wall centered on said common axis and having a circular cross section, with a diameter inferior to the diameters of said skirt and said disc, said diameters of said skirt and of said disc being substantially equal, such that a volume is defined radially outside of the cylindrical wall and between disc and an annular portion which is adapted to accommodate the cable, and - said third part comprises a disc attached to the axial end of the cylindrical wall of second part and opposite to the disc-like annular portion of first part, and several arms connected to the surface of disc and extending axially away from second part, said arms extending parallel to a central axis of said support member and define between them a volume for accommodating a connector belonging to said sensor unit, curved portions being provided at free ends of said arms and forming each a recess for accommodating a part of a sensor body belonging to a sensor unit mounted on another temporary support member or a part of a bearing cooperating with a sensor unit mounted on another temporary support member. - said temporary support member comprises: - a first part for accommodating at least a part of a sensor body of said sensor unit - a second part for accommodating, in a coiled configuration, a cable connected to said sensor body and - a third part for accommodating a connector mounted at a free end of said cable. - a first part for accommodating at least a part of a sensor body of said sensor unit - a second part for accommodating, in a coiled configuration, a cable connected to said sensor body and - a third part for accommodating a connector mounted at a free end of said cable. - said first part and said second part are circular and centered on a common axis and - along said common axis, said second part is located between said first and third parts (10, 30), - said first part comprises a generally cylindrical skirt member centered on common axis and extending axially away from a disc-like annular portion perpendicular to said common axis, - said second part is defined between said annular portion of said first part and a disc which belongs to said third part, wherein said second part includes a cylindrical wall centered on said common axis and having a circular cross section, with a diameter inferior to the diameters of said skirt and said disc, said diameters of said skirt and of said disc being substantially equal, such that a volume is defined radially outside of the cylindrical wall and between disc and an annular portion which is adapted to accommodate the cable, and - said third part comprises a disc attached to the axial end of the cylindrical wall of second part and opposite to the disc-like annular portion of first part, and several arms connected to the surface of disc and extending axially away from second part, said arms extending parallel to a central axis of said support member and define between them a volume for accommodating a connector belonging to said sensor unit, curved portions being provided at free ends of said arms and forming each a recess for accommodating a part of a sensor body belonging to a sensor unit mounted on another temporary support member or a part of a bearing cooperating with a sensor unit mounted on another temporary support member.