The crane can lift a maximum of 300t (350 ton) and has a maximum load moment of 951 tm (6,970 ft kip). The crane has a 64 m (209 ft) main boom, and what it claims is the longest system length – 125m (412 ft) – of any six-axle mobile crane.

The crane can lift loads in the 140t – 220t (150 US ton – 240 US ton) class with partial counterweight, as an alternative to medium and large five-axle mobile cranes.

For transport with 16t axle loads, the AC300/6 can carry Superlift, a 20 m (65 ft) telescopic folding jib, counterweight of up to 18.2 t (20 ton), a three-sheave hook block, and the second hoist with a width of 3m (9.8 ft) and height of 4m (13 ft). When working with the folding jib, the AC300/6 can reach a maximum height of 84m (275 ft).

The AC 300/6 reaches up to 114 m (377 ft) with its rigid boom extension, while a height all the way up to a maximum of 125.7 m (412 ft) can be achieved with the luffing fly jib. Thanks to its patented ‘swan neck’ luffing jib, which can offset into itself, the crane can reach around projecting edges of buildings or other structures up to 100m (328ft) high.

Luffing jibs and rigid boom extensions can be combined in many different ways with a multifunctional modular system principle that, as a standard, consists of nine parts that can be combined for a rigid extension of up to 51 m (167 ft) or a luffing extension of up to 72 m (236 ft). Additionally, there is an optional two-part, 3 m (9.8 ft) -long assembly jib with optional heavy duty head, which combined with the luffing jib allows for increased lifting capacities of up to 69 t (76 ton) for short luffing jib lengths. During road travel, an 11.4 m (37 ft) long folding jib, with the ability of being extended up to 20 m (65 ft) and manually offset by 20 and 40 degrees, can be carried.

Demag has re-engineered the AC 300/6’s luffing jib set-up procedure so that an auxiliary crane is only needed for luffing jib preassembly, but not for installation. Apart from luffing jib pre-assembly and installation onto the boom head, the remaining setup steps can be carried out alone by a skilled crane driver, it said.

The AC300/6 has the fully-automatic counterweight system from the AC250-1. The fully-hydraulic setup procedure can be carried out manually or automatically from the crane cab, at the operator’s option. The maximum counterweight is 116.7 t (128 ton). No hydraulic / electrical lines need to be connected manually. 55.2 t (60.8 tons) can be transported within the vehicle width of 3 m (9.8 ft), and 18.2 t (20 tons) can be transported during road travel.

The AC 300/6 measures 16.4m (54 ft), the AC 300/6 is the smallest 6-axle and most compact 300t (350 ton) mobile crane. Demag claims it is the only 300 t (350 ton) mobile crane with a front overhang of less than 2 m (6.5 ft), which means it can also be operated in Great Britain and Italy without additional accompanying personnel.

The crane has variable outriggers with four standard outrigger bases: 8.5 m (27.9 ft), 7 m (23 ft), and 5.5 m (18 ft), as well as direct support at a width of 2.7 m (8.9 ft).

Diverse individually configurable axle load options fulfill worldwide country-specific permit regulations. For Europe, with a 12 t (13.2 ton) axle load / 72 t (79.3 ton) maximum permissible weight, the AC300/6 can be configured as follows: 12 x 8 x 10 Drive scheme, 16.00R25 tires, and hook block.


The Terex-Demag AC 300/6 The Terex-Demag AC 300/6