A chassis suspension for agricultural equipment, the chassis suspension
comprising: an axle having a substantially upright journal adapted for
upright axial constraint of an inner journal therein; an inner journal
extending into the upright journal, the inner journal having a lower end,
wherein the inner journal is adapted to constrain axial movement of a
strut rod therein; a strut rod extending into the inner journal and
having a lower strut rod portion adapted for mounting a ground-engaging
drive mechanism and wheel, wherein the lower strut rod portion has an
upper end; and, a spring constrained between the lower end of the inner
journal and the upper end of the lower strut rod portion.