The invention relates to a soil-forming machine, in particular an agricultural machine, comprising a frame (3), at least one roller (11) provided with a flexible bandage (13), a first bearing (37) and a second bearing (37) for rotating the roller (11) around a substantially horizontal axis (XX) in the working position, the first bearing (37) and the second bearing (37) being arranged at each end of the roller (11) . The frame (3) comprises a first support (7) and a second support (9), the first support (7) at least being connected to the first bearing (37) via suspension means including a single-arm mechanism upper (101) and a lower arm (121) substantially horizontal and perpendicular to the axis (XX) of rotation of the roller (4), each of the upper (101) and lower (121) arms being connected by a hinge (103, 105, 123, 125) on the one hand to the first support (7) and on the other hand to the first bearing (37), the mechanism forming a deformable quadrilateral, and a substantially vertical elastic return member (141) connected by a hinge (143, 145) on the one hand to the first support (7) and on the other hand to the first bearing (37).L'invention concerne une machine de modelage du sol, en particulier une machine agricole, comprenant un châssis (3), au moins un rouleau (11) muni d'un bandage souple (13), un premier palier (37) et un second palier (37) de rotation du rouleau (11) autour d'un axe (XX) sensiblement horizontal en position de travail, le premier palier (37) et le second palier (37) étant disposés à chacune des extrémités du rouleau (11). Le châssis (3) comporte un premier support (7) et un second support (9), le premier support (7) au moins étant relié au premier palier (37) par l'intermédiaire de moyens de suspension incluant un mécanisme à un bras supérieur (101) et un bras inférieur (121) sensiblement horizontaux et perpendiculaires à l'axe (XX) de rotation du rouleau (4), chacun des bras supérieur (101) et inférieur (121) étant relié par une articula
