The invention concerns a suspension element for self-propelled machine comprising: a suspension fork (100) secured to the chassis of the machine and comprising two parallel arms (120, 130), a motor (400), secured to two sleeves (200, 300) each comprising at least one bearing (210A, 210B, 310A, 310B) adapted to slide in translation on the arms (120, 130), the suspension element being characterized in that the two sleeves (10) (200, 300) are separate parts, the motor (400) comprising a casing (410) adapted to form a supporting frame allowing the ensured rigid connection between the two sleeves (200, 300) and for this purpose comprising connecting means designed to ensure the connection between the supporting frame of the motor and each of the two sleeves over a center distance range of the sleeves while withstanding the forces applied by the chassis on the casing.