A track suspension for a track laying vehicle having a pair of endless tracks, one on each side of the vehicle body, independently driven by drive sprockets at the front. Each track suspension unit has an elongated suspension beam pivoted at one end behind the drive sprocket and sprung at the opposite end to the vehicle body providing a major suspension primarily responding to major changes in ground reaction forces. Inside each track and supported on the beam are trucks, each having a walking beam pivotally mounted on the suspension beam and providing a minor oscillatory suspension motion responding to minor changes on ground reaction forces.
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