Liebherr LB 36 User Manual download pdf (Page 14)

14 LB 36

Technical description

Hydraulic system

The main pumps are operated by a distributor gearbox. Axial piston

displacement pumps work in open circuits supplying oil only when

needed (ow control on demand).

The hydraulic pressure peaks are absorbed by the integrated

automatic pressure compensation, which relieves the pump and

saves fuel.

Pumps for working tools 2x 350 l/min

Separate pump for kinematics 180 l/min

Hydraulic oil tank 800 l

Max. working pressure 350 bar

The cleaning of the hydraulic oils occurs via an electronically

monitored pressure and return ﬁlter.

Any clogging is shown on the display in the cab.

The use of synthetic environmentally friendly oil is also possible.

Swing

Consists of triple-row roller bearing with external teeth and two

swing drives, ﬁxed axial piston hydraulic motor, spring loaded and

hydraulically released multi–disc holding brake, planetary gearbox

and pinion. Selector for 3 speed ranges to increase swing precision.

Swing speed from 0 – 2 rpm is continuously variable.

Auxiliary winch

Line pull effective (1

layer) 100 kN

Rope diameter 20 mm

Line speed 0-89 m/min

Crawlers

Propulsion through axial piston motor, hydraulically released spring

loaded multi–disc brake, maintenance-free crawler tracks, hydraulic

chain tensioning device.

Drive speed 0 – 1.4 km/h

Track force 814 kN

Width of 3-web g rouser s 1000 mm

Transport width 3600 mm

Option:

Width of 3-web grousers 900 mm

Transport width 3500 mm

2-speed hydraulic motor for higher travel speed

Control

The control system – developed and manufactured by Liebherr – is

designed to withstand extreme temperatures and the many heavy–

duty construction tasks for which this machine has been designed.

Complete machine operating data are displayed on a high resolution

monitor screen. A GSM/GPRS telematics module allows for remote

inquiry of machine data and operational conditions. To ensure clarity

of the information on display, different levels of data are shown in

enlarged lettering and symbols.

Control and monitoring of the sensors are also handled by this high

technology system. Error indications are automatically displayed on

the monitor in clear text. The machine is equipped with proportional

control for all movements, which can be carried out simultaneously.

Two joysticks are required for operation. Pedal control can be

changed to hand control.

Option:

PDE

: Process data recording

Noise emission

Noise emissions correspond with 2000/14/EC directive on noise

emission by equipment used outdoors.

Rope crowd system

Crowd force push/pull 400/400 kN

Line pull (effective) 200 kN

Rope diameter 28 mm

Travel 18.50 m

Line speed 0-70 m/min

The winches are noted for compact, easily mounted design.

Propulsion is via a maintenance-free planetary gearbox in oil bath.

Load support by the hydraulic system; additional safety factor by

a spring–loaded, multi–disc holding brake. All line pull values are

effective values. The efﬁciency factor of approx. 25% has already

been deducted.

Engine

Power rating according to ISO 9249, 390 kW (523 hp) at 1900 rpm

Engine type Liebherr D 856 A7 SCR

Fuel tank 700 l capacity with continuous level

indicator and reserve warning

Engine complies with NRMM exhaust certication EPA/CARB Tier 4i

and 97/68 EC Stage III B.

Kelly winch with freewheeling

Line pull effective (1

layer) 300 kN

Rope diameter 34 mm

Line speed 0-71 m/min

Option:

Line pull effective (1

layer) 400 kN

Rope diameter 38 mm

Line speed 0-59 m/min

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Liebherr LB 36 User Manual Page 14

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