The new models HK 4.050-1 and HK 4.070-1 offer high maneuverability and numerous boom and boom solutions for versatile load capacities in the smallest of spaces

Tadano has presented two new truck crane models that offer different lifting capacities and radius configurations with high maneuverability thanks to clever boom solutions for versatile use.

The new HK 4.050-1 and HK 4.070-1 truck crane models are easy to use and stay within axle load limits in most urban and street environments, according to Tadano. The four-axle units are well suited for construction sites with tight spaces – from prefabricated house assembly to garage construction projects to roofing and carpentry work, the Carne maker said, adding that the cranes deliver thanks to their compact dimensions. The Model 50 is 11.11 m long and 2.55 m wide, while the Model 70 is 11.8 m long and 2.55 m wide. Both cranes are less than 4 m high.

The boom of the HK 4.050-1 can be extended to a maximum length of 35.2 m. Together with the boom, this results in a maximum system length of 44.2 m with large load capacities. For example, the boom can lift 7.6 t in a radius of 7 m with the maximum length of the main boom and 4.2 t in a radius of 20 m.

The Tadano HK 4.070-1 has a main boom with a length of up to 41 m. With a boom, the maximum system length is extended to 56.8 m. The model 70 can lift up to 55.6 t in a radius of 3 m with a counterweight of 10.1 t – in a radius of 8 m the capacity is still an impressive 19.2 t.

Tadano added that the cranes’ AML control software means that their lifting capacities are not compromised when using asymmetrical boom configurations. The AML crane control software unlocks the maximum load capacity depending on the position of each boom and the slewing angle. Regardless of this, the booms of the new HK models already have large load capacities, said the manufacturer.

The new truck cranes from Tadano have a turning radius that is up to 2 m smaller than that of their predecessors. This eliminates a number of maneuvers that would otherwise be required in a confined space, and makes others significantly shorter. On the construction site, both the HK 4.050-1 and the HK 4.070-1 with their flexible H-style outriggers do better. To date, these are the only two truck cranes in existence that have this feature, Tadano said. H-booms require much less space compared to swing-out booms on workplaces and also allow the chassis to be raised higher.

Since the arms of both models can also be positioned in an asymmetrical configuration, ie each arm base can be extended to an individual length, the Tadano HK units really shine in tight workplaces. The crane design allows the use of five different individually selectable positions for each boom to ensure that the cranes can adapt to local conditions.

Michael Klein, Product Marketing Manager who is overseeing the introduction of the Tadano cranes, said: “The installation space is becoming increasingly scarce, which is why many are becoming smaller and smaller and the workplaces increasingly narrow. Not to mention that it is becoming more and more expensive to build. Our cranes are a cost-effective alternative to using larger cranes on private construction sites. Due to their small size and their intelligent asymmetrical boom system, they take up very little space.

We use standard truck chassis from well-known manufacturers for our truck cranes. This means that the drive train is cheaper and easier to maintain for our customers. Basically, the cranes are unbeatable when it comes to maintenance and repair. “

Both the HK 4.050-1 and the HK 4.070-1 are available for Volvo and Scania chassis. The smaller model can also be mounted on Mercedes and MAN chassis. The engines used in the body are manufactured by Mercedes (HK 4.070-1) and Cummins (HK 4.050-1) and deliver 129 kW for the 70 model and 101 kW for its smaller siblings. Thanks to an innovative exhaust gas treatment system, the two engines comply with the EU emissions standard level V. In addition, the superstructure and carrier engines of the Model 70 can be refueled from the same side – a small detail that makes the crane operator’s daily work easier.