... pallet10, cover of the axle11, down pallet12, cranking bar13, axle14, lifting spanner15, up & down spannerQD10T RACK-TYPE JACKApplication :This machine is ... railway track and the installation of bridge as well as lifting the vehicle , equipment and heavy object. Since its simply structure ... to 2 mm. The picture: orange cast steel mechanical track jack ,rack-type jack ,rack lifting jack