New sleeper changing unit with ballast shield for HS sleepers Sleeper Changers ,The new HS sleeper changing unit with integrated ballast shield offers the additional option of bolt-on ballast buckets that can be used to extract the ballast from in between the sleepers and place it next to the track, for example. The plunge depth of the shield can be adjusted. The sleeper is grabbed with the mounted hydraulic gripper and can then be pulled out of the bed from the side. The grab is equipped with a 360° endless rotation. HS At1 sleepers can also be handled by opening the hydraulic gripper and thus clamping the sleeper. Ideal for road rail excavators with 12t to 24t operating weight. A special holding valve guarantees a secure retention of loads even in the case of pressure drops.