Liebherr R946 User Manual

Crawler excavator R 946

Operating Weight: 38,400 – 41,950 kg
Engine Output: 200 kW / 272 PS
Bucket Capacity: 1.25 – 2.50 m³

R 946

Operating Weight:
Engine Output:
Bucket Capacity:

38,400 – 41,950 kg

200 kW / 272 PS

1.25 – 2.50 m³

R 946 Litronic

2

Performance

Thanks to its innovative Advanced excavator system
technology, the R 946 crawler excavator has performance
features that are truly unique. Characteristic elements of
this system technology include the particularly effective
and energy-efficient Positive Control twincircuit hydrau­lic system, which was specifically designed for machines
with a high level of superimposed functions and opera­tional movements. The electronic pump control arrange­ment sets this technology apart, creating a new standard
for performance and quantity control that entirely match­es the operator’s needs.

Reliability

Liebherr provides customers with solutions that lead the
way for the future, solutions for maximum equipment
reliability and availability, solutions which satisfy the
most extreme demands for performance and quality.
With more than 50 years experience in the construction
of hydraulic excavators, we have an advantage in design
and consultation that clearly sets us apart.

Comfort

In the cab the driver can look forward to a workplace
designed in accordance with the very latest findings in
ergonomic science, with emphasis on comfort and ease
of operation. The optimised arrangement of the hydrau­lic hoses means that the driver has en even wider field of
vision, and the heating and climate control system fitted as
standard means pleasant working conditions inside, what­ever the weather. Liebherr crawler excavators are also par­ticularly easy to service – maintenance tasks can be carried
out easily and rapidly at readily accessible service points.

Economy

Crawler excavators from Liebherr guarantee maximum
productivity. The optimum interplay of hydraulics and
electronics means that individual movements and super­imposed movements alike can be carried out particularly
efficiently. And, perhaps last but by no means least, the
perfect harmonisation of all the components means that
energy expenditure during operation can be kept to an
absolute minimum.

R 946 Litronic

3

R 946 Litronic

4

Modular quick-change system
made by Liebherr

• Likux – connects all hydraulically

mounted tools without having to leave
the operator’s cab, maximum produc­tivity due to tool change being
performed in a matter of seconds

• The suitable digging tool for every

application. Your machine is a multi­functional tool carrier and will pay
for itself very quickly indeed

• Mechanic and hydraulic Liebherr

quick-change adapter

Performances

Thanks to its innovative excavator system technology, the R 946 crawler exca­vator has performance features that are truly unique. Characteristic elements
of this system technology include the particularly effective and energy-efficient
Positive Control twin-circuit hydraulic system, which was specifically designed for
machines with a high level of superimposed functions and operational movements.
The electronic pump control arrangement sets this technology apart, creating
a new standard for performance and quantity control that entirely matches the
operator’s needs.

Integrated excavator system technology

High-tech for high
performance

Positive Control
twin-circuit hydraulic
system

Power and speed

Faster work cycles

Among the high-tech equipment on the Advanced
version of the R 946 is the newly-developed inte­grated excavator system technology. This is based on
the Positive Control hydraulic system, controlled by
Liebherr electronics and the system software. The
sensors located at strategic points on the machine
form the basis for an intelligent system that allows for
fast and fluent working.

When travelling straight or in a curve, and during
levelling work, the two pump circuits of the hydrau­lic system are separated or grouped together, as the
need arises. Separation of the systems means that
different consuming components can be supplied
with different load pressures independently, and
saving energy too. By contrast, grouping the pump
circuits allows for maximum speeds with individual
or superimposed movements, and that means opti­mum energy utilisation.

The R 946 achieves particularly fast work cycles,
thanks, for example, to the powerful slewing drive of
the superstructure, the rapid slewing rates, and the
creation of high slewing torque.

Wide range of operational
possibilities

• Large number of equipment variants

• Versatile selection of undercarriage

variants

• Broad operational spectrum, from

earthmoving, to grading work, to
demolition

Operating
pressure

With an operating pressure of 380 bar, the R 946
achieves higher hydraulically limited load capaci­ties and higher digging forces, of up to 229 kN,
and break-out forces of up to 238 kN; perfect for
more difficult operational situations such as canal
or pipeline construction.

Liebherr Diesel Engine

• Specically designed for construction equipment

• Maximum output at low engine speed

• Long life expectancy

• LIDEC-Engine Control – Liebherr Diesel Engine Control

• State-of-the-art technology with common rail injection

system

• Electronically regulation of injection-amount and-timing

• Complies with emission standard IIIB / Tier 4i

R 946 Litronic

5

R 946 Litronic

6

LiDAT data transfer system

• Complete eet management,
all from one source

• Optimized economical performance of

the machine park thanks to detailed
view of the distribution of operating
states and times

• Reports on capacity commitment and

the use of the machine park can be
called up daily via the Web portal

• Precise location of the machine

• Regional delimitation and xed down-

times increase safety and reliability

Reliability

Liebherr provides customers with solutions that lead the way for the future,
solutions for maximum equipment reliability and availability, solutions which
satisfy the most extreme demands for performance and quality. With more than
50 years experience in the construction of hydraulic excavators, we have an
advantage in design and consultation that clearly sets us apart.

High stability undercarriage

Better force distribution

The undercarriage concept leads to increased per­formance with improved service life. Thanks to the
connection of the middle section being extended as
far as the ends of the chassis beams, known as the
X-design, the forces are better distributed, which
increases the service life of the undercarriage.

Technology with perspective

Quality right down
to the last detail

Perfect optimisation

The at-a-glance layout of the hydraulic, lubrication,
and electricity lines makes for optimum functional
reliability and maximum availability of the unit. Best
possible corrosion protection is guaranteed thanks
to components and modules being finalpainted and
surface treated before assembly.

Individual components of the drive train, manufac­tured in-house, such as diesel engine, traction drive,
rotary actuators, operating pump and hydraulic
cylinder are perfectly optimised with one another.
As components of a total system designed for long
operational life, they guarantee maximum possible
reliability.

Safety of functionality

Safety of functionality
ROPS cab structure

The cab is equipped with an integrated roll-over
protection system (ROPS) in accordance with
ISO 12117-2, guaranteeing driver safety in any
situation.

Key technologies –
Made by Liebherr

• Perfect matching of the components

to construction machine operations

• Engine, hydraulic pumps, transfer

gears, travel drives, slewing drives,
slewing rings, and electronic compo­nents – all from the same source

• Main steel components, such as
undercarriage, equipment modules,
and slewing superstructure, all
designed by Liebherr

Automatic control
of functionality

The operator can entirely focus on his job, be­cause the integrated on-board electronic continu­ously performs a comparison with pre-determined
target data. Eventual deviations from the target
parameters are shown on the display.

Spare parts service

• Any spare parts required are

available within 24 hours – world­wide. And that means high opera­tional readiness of the machines,
wherever, whenever

• Over 80,000 spare parts in stock

at all times

R 946 Litronic

7

R 946 Litronic

8

Touch-screen display

• 7-inch touch-screen
with colour display

• Wide range of adjustment, check,

and monitoring possibilities

• Tough, reliable design
(sealing tightness class IP 65)

• Video capacity with high resolution,

reproduces the image from the rear
area monitor camera in best possible
quality