Liebherr LR 1250 User Manual

Technical data
Hydraulic lift crane

LR 1250

Dimensions

Basic machine with undercarriage

2150

R 8700

3500

19200

1500

7520
8700

9700

3740

7600

1830

R 6200

1600

4600

1200

1200

6050
3000

1345

520

7000

5800

narrow track width

Operating weight

The operating weight includes the basic machine with crawlers,
2 main winches 120 kN including wire ropes (260 m and
495 m) and 20 m main boom, consisting of A-frame, boom
foot (10 m), boom head (7 m) and boom extension (3 m),

82.3 t basic counterweight, 36 t carbody counterweight and
250 t hook block.

Total weight approx. 210 t

Ground pressure

Ground bearing pressure 1.16 kg/cm

2

Equipment

Main boom (No. 2320.xx) max. length 86 m
High reach (No. 2320.x x and 1916.xx) 117 m
Luffing jib (No. 1916.xx) max. length 95 m
Max. combination main boom 53 m
luffing jib 95 m
Fixed jib (No. 1008.xx) 11 m – 26 m
Auxiliary jib 24 t (option 36 t)

Remarks

1. The lifting capacities stated are valid for lifting operation only
(corresponding with crane classification according to F.E.M.

1.0 01. cr ane gr oup A1).

2. Crane standing on firm, horizontal ground.

3. The weight of the lifting device (hoisting ropes, hook block,
shackle etc.) must be deducted form the gross lifting capacity to
obtain a net lifting value.

4. Additional equipment on boom (e.g. boom walkways, auxiliary jib)
must be deducted to get the net lifting capacity.

5. For max. wind speed please refer to lift chart in operator‘s cab
or manual.

6. Working radii are measured from center of swing and under load.

7. The lifting capacities are valid for 360 degrees of swing.

8. Calculation of stability under load is based on DIN 15019 / part 2 /
chart 1 and ISO 4305 Table 1 + 2, tipping angle 4°.

9. The structures are calculated according to F.E.M. 1.001 - 1998
(EN 13001-1; EN 13001-2).

2 LR 1250

Transport dimensions and weights

Basic machine and main boom (No. 2320.xx)

3150

11575

8700

Option

10300

1400

3000

3300

3220

970

1345

2500

2260

Basic machine

with A-frame, 2x 120 kN crane winches without boom foot, hoist
ropes, basic counterweight and crawlers

Width 3000 mm

Weight 42500 kg

Weight of hoist rope 3.42 kg/m

Crawler 2 x

Track pads 1200 mm

Width 1200 mm

Weight 19800 kg

Boom foot (No. 2320.25)

Width 2430 mm

Weight

incl. winch and rope 5600 kg

without winch 4000 kg

Weight

Boom section (No. 2320.23) 3 m

Width 2430 mm

Weight with HPT

Weight with HPT

1)

830 kg

1)

and NDL2) 920 kg

6150

12150

8050

1) Pendant straps for m ain boom s 2) Pendant s traps fo r jib

Boom transport option

*) Including pendant straps

2260

2260

2950

Boom section (No. 2320.23) 6 m

Width 2430 mm

Weight with HPT

Weight with HPT

1)

1295 kg

1)

and NDL

2)

1455 kg

Boom section (No. 2320.23) 12 m

Width 2430 mm

Weight with HPT

Weight with HPT

1)

2340 kg

1)

and NDL2) 2690 kg

Boom head (No. 2320.23)

Width 2430 mm

Weight with HPT

1)

4300 kg

Boom transport option

(No. 2320.xx /1916.xx) 12/12 6/6 3/3 m

Length 12250 6250 3250 mm

Weight* 3940 2145 1475 kg

LR 1250 3

Transport dimensions and weights

Luffing jib (No. 1916.xx)

Luffing jib head (No. 1916.21)

2200

7750

1950

115 0

Width 2010 mm

Weight* 1550 kg

L-boom jib section (No. 1916.22) 1 m

Width 2010 mm

Weight* 460 kg

3150

6150

12150

10850

12220

1850

1850

1850

3150

2300

Luffing jib section (No. 1916.18) 3 m

Width 2010 mm

Weight* 475 kg

Luffing jib section (No. 1916.18) 6 m

Width 2010 mm

Weight* 690 kg

Luffing jib section (No. 1916.18) 12 m

Width 2010 mm

Weight* 1250 kg

Luffing jib foot with A-frames (No. 1916.22)

Width 2010 mm

Weight* 6300 kg

L-boom
section tapered

Width 2430 mm

Weight* 1700 kg

(No. 2320/1916.20) 12 m

Fixed jib (No. 1008.xx)

6500

3120

6120

6620

*) Including pendant straps

1020

1020

1020

1850

Fixed jib head (No. 1008.20)

Width 1090 mm

Weight* 920 kg

Fixed jib section (No. 1008.17) 3 m

Width 1090 mm

Weight* 300 kg

Fixed jib section (No. 1008.17) 6 m

Width 1090 mm

Weight* 455 kg

Fixed jib foot with A-frame (No. 1008.20)

Width 2200 mm

Weight* 1950 kg

4 LR 1250

Transport dimensions and weights

Counterweight

Counterweight 1 x

640

6050

400

Width 1660 mm

Weight 12000 kg

Counterweight 1 x

Width 1660 mm

Weight 10000 kg

5790

1905

2800

Mid fall (option)

750

2000

480

825

2060

Counterweight 12 x

Width 1360 mm

Weight 5000 kg

Carbody counterweight 2 x

Width 3340 mm

Weight 9800 kg

Carbody counterweight 2 x

Width 3340 mm

Weight 8300 kg

Mid fall section (No. 1916.xx) 0.5 m

Width 750 mm

Weight 715 kg

Hooks

2230

2100

1800

1600

1100

770

770

770

800

400

250 t hook block - 11 sheaves

Width 1030 1250 mm

Weight 2300 3200 kg

160 t hook block - 7 sheaves

Width 640 760 880 mm

Weight 1500 2250 3000 kg

100 t hook block - 5 sheaves

Width 540 670 770 mm

Weight 1300 1800 2300 kg

40 t hook block - 1 sheave

Width 300 400 500 mm

Weight 700 1100 1500 kg

12.5 t single hook

Width 400 mm

Weight 600 kg

LR 1250 5

Technical description

Engine

Power rating according to ISO 9249, 270 kW (362 hp) at 2000 rpm
Engine type
Fuel tank
indicator and reserve warning
Engine complies with NRMM exhaust certification EPA/CARB Tier 4i or
97/68 EC Stage IIIB.

Liebherr D 936 A7 SCR
800 l capacity with continuous level

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
Oil tank capacity

max. 350 bar
650 l

Luffing jib winch

Main winches

Line pull (1st layer) max. 175 kN
Line pull (7th layer)
Rope diameter
Drum diameter
Rope speed
Rope capacity in 7 layers
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.

120 kN

26 mm

580 mm

0 – 136 m/min

489 m

Crawlers

Propulsion through axial piston motor, hydraulically released spring
loaded multi–disc brake, crawler tracks, hydraulic chain tensioning
device.
Track pads
Drive speed

1200 m m
0 – 1.6 km/h

Line pull max. 105 kN
Rope diameter
Jib luffing

20 mm
51 sec. from 15° to 78°

Boom winch

Line pull max. 217 kN
Rope diameter
Boom up

24 mm
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.

Control

The hear t 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¬TELEMATIC S¬MODULE

Noise emission

Noise emissions correspond with 2000/14/EC directive on noise
emission by equipment used outdoors.

6 LR 1250

Boom combinations

7.0 m (23 ft)
No. 1916.21

1.0 m (39.4 inch)
No. 1916.22

12.0 m (40 ft)
No. 1916.18

12.0 m (40 ft)

No. 1916.18

7 m (23 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

12.0 m (40 ft)
No. 1916.18

12.0 m (40 ft)
No. 1916.18

6.0 m (20 ft)
No. 1916.18

5.5 m (18 ft)
No. 1008.20

6.0 m (20 ft)

No. 1008.17

6.0 m (20 ft)
No. 1008.17

3.0 m (10 ft)
No. 1008.17

5.5 m (18 ft)
No. 1008.20

7.0 m (23 ft)
No. 2320.23

12 m (40 ft)

No. 2320.23

7.0 m (23 ft)
No. 1916.21

12.0 m (40 ft)
No. 1916.18

12.0 m (40 ft)
No. 1916.18

12.0 m (40 ft)
No. 1916.18

12.0 m (40 ft)

Mid fall 0.5 m (1.64 ft)

No. 1916.18

No. 1916.32

12.0 m (40 ft)
No. 1916.18

12.0 m (40 ft)
No. 1916.18

6.0 m (20 ft)
No. 1916.18

3.0 m (10 ft)
No. 1916.18

7.0 m (23 ft)
No. 1916.22

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

6 m (20 ft)

No. 2320.23

3 m (10 ft)

No. 2320.23

10 m (33 ft)

No. 2320.25

Main boom No. 2320.xx 86 m

12.0 m (40 ft)

Tap ere d

No. 2320/1916.20

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

6.0 m (20 ft)
No. 2320.23

3.0 m (10 ft)
No. 2320.23

10.0 m (33 ft)
No. 2320.25

Max. combination 117 m

Main boom

No. 2320.x x 43 m

Tapered

No. 2320/1916.xx 12 m

Luffing jib

No. 1916.xx 62 m

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

6 m (20 ft)

No. 2320.23

10.0 m (33 ft)
No. 2320.25

Max. combination 97.0 m

Main boom

No. 2320.x x 71 m

Fixed jib

No. 1008.x x 26 m

7.0 m (23 ft)
No. 2320.23

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

12 m (40 ft)

No. 2320.23

10.0 m (33 ft)
No. 2320.25

Max. combination 148 m

Main boom

No. 2320.x x 53 m

Luffing jib

No. 1916.xx 95 m

Main boom

No. 2320.xx 56 m

Luffing jib

No. 1916.xx 74 m

LR 1250 7

Self assembly system

Unloading of basic machine

Unloading and assembly of boom foot

Unloading and assembly of crawlers

Unloading and assembly of carbody counterweight

Unloading and assembly of boom

Unloading and assembly of counterweight

8 LR 1250