By coincidence I stumbled upon this tracked crane in Friedrichshafen. It's a RK40 / 150 of the company Scheffknecht Kran from Lustenau (A). Until recently the crane was owned by Mayer from Burgberg, they had it build in 2008 by the company Fahrzeugtechnik BL.

The type RK40/150 indicates it's a RaupenKran (tracked crane) in the 40 tonnes class, or the 150 ton/mtr class.

Here we see how compact they have built this crane. The tracked frame supports a Palfinger PK150002. Heavy outriggers are mounted at both ends of the frame to provide stability. Differently then the Spacelifter from Zwagerman, this crane isn't fully stable without it's outriggers. Therefore the own weight with 36 tonnes is lower.

The outriggers are double extending heavy versions of Palfinger. At the ends we see a interestings construction, the cylinders can be mounted at 5 different heights. This way the crane can always be supported, even on very uneven terrains.

The crane is a Palfinger PK150002 in G version, it extends to 18,8 meters and can lift 4,8 tonnes at that distance. With the PJ170E jib it can reach 31,8 meters with 1,1 ton of load. Here it is lifting a vibrating block that is used to install concrete iron into a drilled hole.

The sunday was a resting day and the crane was folded together. As this is recent addition to the Scheffknecht fleet, they are still working on it, several parts still need a new paintjob like toolboxes. The left side used to have a cab that seems to be missing right now.

Here they only used the compact outrigger position. The main outriggers are only extended once. These outriggers can also be extended to the front and to the rear to create a larger overal footprint and get more stability.

One of the tasks of this crane is supporting on this kind of construction sites, it is brought here with a lowloader. It will stay here several days on this site untill all the holes are drilled. The tracks have no problem with the rough soil, also they won't be damaged by materials like parts of concrete iron. Another usage is the installation of ski lifts in the mountains.

The crane is driven by a Deutz diesel engine.

Here it is clearly visible that the crane is mounted very low in the chassis, this reduces the transportheight.

A very interesting crane, I hope it will stay at work in this area for the coming years.