Liebherr LG 1750 Specification

About the Liebherr LG 1750

The LG 750 lattice boom mobile crane has the flexibility of a 750te crawler crane combined with the mobility of a high speed mobile crane. Liebherr uses the crane turntable and boom systems from the LR 1750 crawler crane for the LG 1750, together with an eight-axle chassis of the very latest design with speed-dependent rear-axle steering.

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Technical Summary for the Liebherr LG 1750

Max Load Capacity750 tonnes
Main Boom From21 metres
Main Boom Up To140 metres
Additional Jib From12 metres
Additional Jib Up To105 metres
Ballast / Counterweight As Travels20 tonnes
Additional Ballast / Counterweight230 tonnes
Total Ballast / Counterweight250 tonnes
Number Of Axles8 axles
Axle Load12 tonnes per axle
Total Axle Load96 tonnes
Axleload calculation based on 20te counterweight and hook block.
Technical information provided here for the Liebherr LG 1750 is indicative only. Please note the content of the “Disclaimer” notice applicable to this website and contact us to confirm the detailed technical specification for the Liebherr LG 1750.

Dimensions As Travels for the Liebherr LG 1750

HeightWidthLength
4 metres3 metres18.912 metres
Technical information provided here for the Liebherr LG 1750 is indicative only. Please note the content of the “Disclaimer” notice applicable to this website and contact us to confirm the detailed technical specification for the Liebherr LG 1750.

Outrigger Base for the Liebherr LG 1750

Outrigger SetupWidthLength
Fully Rigged16.006 metres16.007 metres
Half Rigged- metres- metres
Technical information provided here for the Liebherr LG 1750 is indicative only. Please note the content of the “Disclaimer” notice applicable to this website and contact us to confirm the detailed technical specification for the Liebherr LG 1750.

Hook Block for the Liebherr LG 1750

Possible Load (te)No. Of SheavesNo. Of LinesWeight (kg)
600 / 3122 x 112 x 228.2 / 11 - 16
400 / 2152 x 72 x 145.5 - 7.5 / 7 - 15
320 / 1602 x 52 x 104 - 7 / 5 - 12
2005112 - 7
125271.5 - 5.5
16-11.1
Technical information provided here for the Liebherr LG 1750 is indicative only. Please note the content of the “Disclaimer” notice applicable to this website and contact us to confirm the detailed technical specification for the Liebherr LG 1750.

Crane Carrier for the Liebherr LG 1750

FrameSelf-manufactured, torsion-resistant box-type design of high-tensile grain refined structural steel.
OutriggersFour hydraulically unfolding swing-out outriggers with hydraulic supporting rams.
Engine8-cylinder Diesel, make Liebherr, type D9508 A7, watercooled, output 500 kW (680 h.p.) at 1900 min-1, max. torque 3000 Nm at 1100 min-1 – 1500 min-1. Exhaust emissions acc. to 97/68/EG stage 3 and EPA/CARB Tier 3. Fuel reservoir: 600 l.
TransmissionAutomatic transmission with converter control clutch, make ZF, type TC-TRONIC with 12 forward speeds and 2 reverse speeds, transfer case with lockable longitudinal differential.
AxlesRobust crane carrier axles. All axles steered, axles 1, 2, 4 and 6 are driven planetary axles, axle 4 with longitudinal differential, axles 4 and 6 with tranverse differential.
SuspensionAll axles with hydropneumatic suspension with automatic levelling control. Axle pressure equalization between the axle pairs 1 + 2, 3 + 4, 5 + 6 and 7 + 8. The suspension can be blocked hydraulically.
Tyres16-fold, all axles equipped with single tyres. Tyre size: 505/95 R 25 (18.00 R 25).
SteeringZF semi-integral power steering, 2-circuit system with hydraulic servo mechanism and additional axle-driven emergency pump acting on the mechanically interlinked axles 1 – 4. Axles 5 – 8 are steered electrohydraulically during road displacement and from 30 km/h, axles 5 + 6 are set to straight displacement and locked. Axles 7 + 8 are “actively” steered up to 60 km/h dependent on the cramp of the front axle and beyond 60 km/h, set to straight displacement and axle 7 is locked in addition. Steering in accordance with EC recommendation 70/311 EEC.
BrakesService brake: All-wheel servo-air brake, 2-circuit system. Additional brakes: Exhaust pipe retarder, retarder in the TC-TRONIC transmission, TELMA-type eddy-current brake (optional). Hand brake: Spring-loaded brake, acting on all wheels of the 3rd , 6th and 8th axle. Brakes acc. to EG directives 71/320 EEC.
Driver’s CabSpacious cab of sheet steel, on rubber shock absorbers. Safety glas windows.
Electrical SystemModern data bus technology, 24 Volt DC, 2 batteries of 170 Ah each.
Technical information provided here for the Liebherr LG 1750 is indicative only. Please note the content of the “Disclaimer” notice applicable to this website and contact us to confirm the detailed technical specification for the Liebherr LG 1750.

Crane Superstructure for the Liebherr LG 1750

Crane DriveDiesel-hydraulic by pump distribution gear with 6 axial piston variable displacement pumps with capacity control within closed oil circuits.
HoistHydraulically driven cable drums by axial piston variable displacement motor and planetary gear with spring-loaded, hydraulically releasable static brake. Wearfree braking function during lowering by closed oil circuits. Winch 2 – hoist gear, winch 4 – derrick gear. Additional auxiliary winch for reeving of cables
Slew1 slewing gear (optionally 2), hydraulically powered by axial piston variable displacement motors and planetary gear with spring-loaded, hydraulically releasable static brake. Wearfree braking function by closed oil circuits.
Telescopic Boom-
Crane CabSpacious, all-steel construction cabin, swivelling sideways and tiltable backwards, with operating and control instruments. Self-contained warm-water heating (optionally air-conditioning system).
Technical information provided here for the Liebherr LG 1750 is indicative only. Please note the content of the “Disclaimer” notice applicable to this website and contact us to confirm the detailed technical specification for the Liebherr LG 1750.
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