Liebherr L 556 - Manual (Page 46)

46 // Quarrying
To mechanically dig and break out hard
rock, high penetration and pushing forces
are required. The Liebherr crawler tractors
PR 754 and PR 764 offer the ideal
prerequisites with their 44 and 55 ton
operating weights in conjunction with
the innovative hydrostatic drive concept.
Transmission of the engine power is
constant through a positive connection
without slip via both tracks, which means
that the material is worked loose evenly
and efficiently pushed away.
The latest generation Liebherr diesel
engines combine high performance with
frugal operation. Thanks to the consistently
low engine speed, fuel is saved and a high
service life of the components is achieved.
Additional clear economical advantages
speak in favor of Liebherr. As with all
Liebherr equipment, the PR 754 and
PR 764 models also benefit from being
user-friendly. This reduces maintenance
costs and downtime.
Tough and sturdy, Liebherr crawler
tractors are configured for long life time in
terms of construction and material quality.
Parts that are subject to particularly heavy
loads are made of very strong materials,
and sensitive areas are optimally protected.
All of these factors make Liebherr crawler
tractors reliable machines with the highest
level of availability.
Liebherr crawler tractors offer operators a
generously proportioned workspace,
designed with the latest ergonomic
aspects in mind. The spacious and
comfortable cabin enables an optimal
overview of the working area and the work
equipment. With the intuitive single joystick
control, the machine can be controlled
deftly and safely at all times.
The articulated trucks are manufactured
in Kirchdorf, Germany, and are designed
for maximum efficiency and reliability. Key
components are manufactured in-house
to ensure consistently high quality and
durability.
The TA 230 Litronic, with a transport
capacity of up to 33 tons, is configured
for maximum work performance. The large
dump body combined with the robust
drivetrain guarantee efficiency in mining.
Even in the tough conditions encountered
in a quarry, the truck impresses with very
good driving characteristics, and it is
always safe when it is on the move thanks
to its enormous retarder performance.
The TA 230 Litronic achieves fast turnover
rates with its intelligent drive concept.
Simple transportability enhances the
machine's flexibility, increasing its
workload. Maintenance-free bearing
points and optimally accessible service
points reduce maintenance costs and
downtimes.
The TA 230 Litronic features proven
Liebherr components, such as its diesel
engine, hydraulic cylinder, ball slewing ring
and our own electronics. This means the
machine is ready for the tough operations
encountered in quarrying and responds
with absolute operational reliability and
high availability.
The Liebherr crawler tractor PR 764 digs
and breaks out hard rock.