The AT 40 is the newest addition to the Franna pick and carry portfolio, incorporating the latest technology with engineering excellence. With a huge maximum lift capacity of 40 tonne (44 USt), this articulated crane boasts 44% more load moment than the MAC 25. The 3-axle design eliminates the need for a removable counterweight and the third axle control system raises axle 3 when operating on a work site, providing similar turning circle as the MAC 25. Maximum road speeds of up to 75 km/h allows the operator to move swiftly and safely from job to job.

Additional features include a full width isolated cabin, articulating counterweight and increased cabin storage.

Dynamic LMI (Patent Protected)

First released in 2013, Franna’s patented Dynamic LMI remains as a pillar of safety, underpinning the electronic control and user experience offered today. The system is designed to offer ‘real-time’ calculation of rated capacity taking into account boom configuration, as well as chassis articulation, pitch and roll, enabling continual assessment of structural limitations, forward stability and side stability. 

Increased resolution of rated capacity is made possible by finer measurement of articulation pitch and roll angles, allowing for improved machine capability compared to previous generation LMI systems. When operated on a jobsite over undulating terrain, the rated capacity will be updated continually, providing instantaneous information on the percentage utilisation of the machine (0-100% of available capacity). When operating on a side slope or undulating terrain, operators are no longer required to manually calculate a reduction of rated capacity; the Franna Dynamic LMI does that.

Other operational aids include:

• Operator settable maximum working height
• Maximum working radius
• Percentage of rated capacity

These features further enhance the safe operation of the machine when site conditions get tough and are available in retrofit form for all Mercedes powered Franna cranes.