Liebherr LR1200 SX Litronic - Manual (Page 6)

6 LR 1200 ANSI/ASME B 30.5
Technical description
Engine
Power rating according to ISO 9249, 270 kW (362 hp) at 2000 rpm
Engine type
Liebherr D 936 A7 SCR
Fuel tank 211 gal capacity with continuous level
indicator and reserve warning
Engine complies with NRMM exhaust certification EPA/CARB Tier 4i or
97/68 EC Stage IIIB.
Luffing jib winch
Line pull max. 23,605 lbf
Rope diameter 20 mm
Jib luffing 51 sec. from 15° to 78°
Boom winch
Line pull max. 48,784 lbf
Rope diameter 24 mm
Boom up 130 sec. from 15° to 86°
Swing
Consists of rollerbearing with external teeth, swing drive with fixed
axial piston hydraulic motor, spring loaded and hydraulically released
multi–disc holding brake, planetary gearbox and pinion.
Both swing modes are possible – speed control or free swing.
A multi–disc holding brake acts automatically at zero swing motion.
Swing speed from 0 – 3 rpm continuously variable.
Main winches
Line pull (1st layer) max. 39,345 lbf
Line pull (7th layer) 26,980 lbf
Rope diameter 26 mm
Drum diameter 22.8 inch
Rope speed 0 – 446 ft/min
Rope capacity in 7 layers 1604 ft
The winches are outstanding in their compact design and easy
assembly.
Propulsion is via a planetary gearbox in an oil bath.
Load support by the hydraulic system; additional safety factor provided
by a spring loaded, multi–disc holding brake.
The main winches use pressure controlled, variable flow hydraulic
motors. This system features sensors that automatically adjust oil flow
to provide max. winch speed depending on load.
Option – winch with free-fall system:
Clutch and braking functions on the free-fall system are provided by a
compact designed, low wear and maintenance-free multi–disc brake.
Crawlers
Propulsion through axial piston motor, hydraulically released spring
loaded multi–disc brake, crawler tracks, hydraulic chain tensioning
device.
Track pads
47.2 inch
Drive speed 0 – 1 mph
Noise emission
Noise emissions correspond with 2000/14/EC directive on noise
emission by equipment used outdoors.
Control
The heart of the hydraulic crawler cranes is the Liebherr control system
which has been developed and manufactured in-house.
It includes all control and monitoring functions and is designed to
withstand extreme environmental conditions and heavy duty
construction tasks. Complete machine operating data as well as
warning signals and irregularities are clearly displayed on the high
resolution monitor in the operator‘s cab in the required language.
The electro-hydraulic proportional control allows several movements to
be performed simultaneously. This ensures that all categories of loads
can be positioned with utmost precision.
Option:
s¬ '3-'023¬TELEMATICS¬MODULE
Hydraulic system
A double axial displacement pump supplies the open loop hydraulic
system, allowing all functions to be operated simultaneously. To
minimize peak pressure an automatic working pressure cut–off is
integrated in the pump.
All filters are electronically monitored.
The use of synthetic environmentally friendly (biodegradable) oils is
possible.
Working pressure
max. 350 bar
Oil tank capacity 650 l