Magni RTH 8.51 - The tallest rotating telescopic handler in the world

• Magni introduces the RTH 8.51, the tallest rotating telescopic handler worldwide, surpassing the RTH 6.51 with over 2,000 kg more lifting capacity.

• The machine features three innovative reach modes (Max Outreach, Max Capacity, and Full Power) that optimize lifting performance, stability, and safety.

• With a maximum working height of 51 meters and compatibility with over 60 attachments, it rivals compact off-road cranes and aerial platforms in versatility and reach.

• The optional Twin Power system allows full electric operation when stabilized, reducing environmental impact and noise for sensitive or indoor jobs.

Peerless versatility, performance and safety

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The new RTH 8.51 replaces the previous world record holder, the RTH 6.51, setting new standards for lifting capacity and versatile application.

The innovative new RTH 8.51 is based on a winning engineering concept: by carefully optimising its materials and structural parts, our engineers were able to maintain the same dimensions and weight as the RTH 6.51, but increase its maximum lifting capacity by more than 2,000 kg.

Reach modes: M1, M2, M3

The new RTH 8.51 integrates the 3 reach modes featured on the other models in the range into a single unit, a first in the category:

• M1 - Max Outreach Mode

The RTH boom “Max Outreach Mode”, standard on all Magni rotating telescopic handlers, features a unique extension sequence, with the smaller, end sections extended first and the larger sections kept until last.
This extension mode increases both the range and the load capacity of the boom’s horizontal reach. It also provides greater load capacity at maximum height.

M2 - Max Capacity Mode

The boom extension “Max Capacity Mode” is a leading-edge characteristic provided on RTH 8.35, 8.39 and 8.46 models. It extends the boom sections in a specific order, starting with the largest and finishing with the smallest sections. This configuration optimises load capacity in the early stages of extension, thus enabling the boom to handle bigger loads than Max Outreach Mode. This mode is therefore ideal for operations which require lifting of heavy loads within a short operating range.

M3 - Full Power Mode

The new “Full Power Mode” revolutionises the operation of Magni telescopic handlers, deactivating boom extension and retraction when the working position is reached in order to increase load capacity and improve operating stability. Available on 6- and 8-tonne RTH models, this feature, when combined with Magni winches or winch booms, provides load capacity performance comparable with that of off-road cranes for a given reach.

This mode allows boom extension to be blocked to reduce the impact of the dynamic forces generated by friction on the chains. In practice, extension is deactivated while rotation and lifting are still enabled, in exactly the same way as on telescopic boom cranes.

The main benefit of this function is the significant increase in load capacity, achieved by eliminating the dynamic effects generated by the boom extension system. What’s more, once these forces have been eliminated the horizontal boom can be extended further, increasing reach capacity.

These modes enable the operator to adapt the machine's performance to the application, thus maximising both safety and efficiency.
According to preliminary comparative studies, in M1 mode the RTH 8.51 delivers up to 60% better lifting performance at maximum reach than the 6.51.

Performance that challenges off-road cranes

With a maximum working height of 51 metres, the Magni RTH 8.51 is the world's tallest rotating telescopic handler, offering performance that rivals that of compact off-road cranes, while retaining the unique versatility of interchangeable attachments. At the same time, thanks to its full range of platform attachments, including the new TP 4.5.10 (premiered at Bauma 2025), the machine can reach a working height of 63 metres, making it a viable alternative to even the tallest aerial platforms on the market.

The RTH 8.51 is compatible with more than 60 attachments, enabling it to satisfy the requirements of any sector, including:

• cladding panel installation using vacuum handler attachments

• green area maintenance with tree cutter attachments

• special operations made possible by a wide range of specific solutions for any need

The sustainable choice: the Twin Power system

The RTH 8.51 can be equipped with Magni TH’s exclusive Twin Power system, which - once the machine is stabilised - enables it to operate in full electric mode by connecting to a 400V power socket. This is an ideal solution for reducing environmental impact and noise in sensitive and indoors applications.

With the new RTH 8.51, Magni TH has set a new benchmark for rotating telescopic handlers: a machine that encompasses the very best engineering, and with a view to the future.