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Dragline Productivity

A family-owned enterprise, A2C, has been working in

the field of sand and gravel extraction and further pro-

cessing for over 50 years.

Around 1.2 million tons are extracted from gravel

pits in the region of Île-de-France and supplied to con-

crete and prefabricated part plants.

The material for this is classically extracted using the

55 t duty cycle crawler crane using a dragline bucket.

With the attached 2.5 cyd dragline bucket, the driver

only needs 40 seconds to retrieve the gravel from a depth

of up to 10 m.

A new Sennebogen 655 duty cycle crawler crane has

recently started digging tons of sand and gravel in the

Île-de-France region of France. The French sales and

service partner, Sygmat, delivered the 55 t material

handler to the customer A2C matériaux.

Reliable, robust technology for

dragline bucket operation

The Sennebogen 655 HD's sturdy mechanical compo-

nents are particularly well-suited to dynamic tasks.

They include wide, robust sheaves which reliably

guide ropes and can withstand huge loads. A second

slewing gear comes into its own particularly when the

655 HD is used with a dragline bucket. As well as pro-

viding extra torque it also saves huge amounts of time

when emptying the bucket.

The newly-designed fair-lead keeps lateral movement

in the luffing rope to a minimum due to a pulley rope

guide in the lower boom section.

The dragline is equipped with a 261 kW diesel engine

that reliably drives the two 16 t free-fall winches. An

robust slewing ring and two strong slewing drives com-

bined with the 24.3 m long lattice boom make the ma-

chine suitable for gravel extraction

• cw

Contractors World International Vol 7 No 1


Contractors World International