Industrial truck, in particular jack lift

The truck has supporting rollers (6a, 6b) laterally arranged at a distance from a driving wheel. The supporting rollers are mounted in a swinging bracket (10) in a rotatable manner around a horizontal rotatable axis (D), where the bracket is mounted in a center pivoted plate (11) in a pivotable manner around a pivot axis (S). The rollers are supported in the plate by an elastic plastic element i.e. elastomer element. The plastic element is arranged between the bracket and the plate. A metallic spring (22) e.g. steel spring or spiral spring (23), is arranged between the bracket and the plate.