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Lu ng Boom/Jib - SPECIFICATIONS
Luffing boom maximum lift capacity
330,600 lbs (149,958 kg)
@ 22’ operating radius
Luffing jib maximum lift capacity
176,300 lbs (79,968 kg)
@ 32’ operating radius
Maximum luffing boom length
200’ (61.0 m)
Maximum luffing jib length
200’ (61.0 m)
Working weight
Approx. 508,175 lbs
(230,500 kg)
Ground bearing pressure
Approx. 15.6 psi
(107.6 kPa)
Calculations to determine working weight, ground bearing pressure, and
gradeability include the weight of the upper and lower works of the crane,
counterweights, and carbody weights, 70’ boom + 70’ jib, and hook block.
General Description
78
Lu ng Attachments
Luffing boom:
The welded lattice construction uses tubular, high-tension
steel chords with pin connections between sections.
Basic boom length
70’ (21.3 m)
Boom tip section (with pin connected boom
point sheave)
3.3’ (1.0 m)
Boom insert section
10’ (3.1 m)
20‘ (6.1 m)
40’ (12.2 m)
Boom base section
25’ (7.6 m)
Luffing taper boom
11.7’ (3.6 m)
Maximum boom length
200’ (61.0 m)
Luffing boom insert (optional):
Optional boom inserts are available to provide extension
capabilities. They are robotic welded, laser aligned,
lattice constructed with tubular, high-tension steel chords
and pin connections.
Boom insert
10’ (3.1 m), 20’ (6.1 m), 40’ (12.2 m)
Luffing jib (optional):
Luffing jib inserts are available to provide extension capabilites.
The optional luffing jib employs welded lattice construction with
tubular, high-tension steel chords with pin connections
between sections.
Basic luffing jib length
70’ (21.3 m)
Luffing jib insert
10’ (3.1 m),
20’ (6.1 m),
40‘ (12.2 m)
Jib tip section
30’ (9.1 m)
Jib base section
30’ (9.1 m)
No. of point sheaves
2
Maximum luffing jib length
200’ (61.0 m)
Working Speed
Hoist line speed (front and rear drums)
360 ~ 10 ft/min (110 ~ 3 m/min)
Lowering line speed (front and rear drums)
360 ~ 10 ft/min (110 ~ 3 m/min)
Boom hoist line speed (front and rear drums)
72 ~ 6.6 ft/min x 2 (22 ~ 2 m/min x 2)
2 minutes: 250’ (76.2 m) boom raise 0 to 80 degrees
Boom lowering line speed (front and rear drums)
72 ~ 6.6 ft/min x 2 (22 ~ 2 m/min x 2)
Swing speed (max.)
2.2 rpm
Travel speed (high/low)
0.69/0.44 mph (1.0/0.5 km/h)
Line speed based on single line, no load, and first layer of rope on the
drum.
Auxiliary sheave:
One (1) sheave with rollers is required during erection of
luffing jib.
Diameter of wire rope:
Hoist rope
26 mm
Luffing jib rope (10 part)
22 mm
Boom hoist rope (16 parts)
26 mm
Boom suspension rope
38 mm
Luffing jib suspension rope
38 mm
Strut suspension rope
38 mm
Luffing jib center hitch suspension
26 mm
(luffing jib length of 170’ (51.8 m) or longer)
Luffing boom hoist reeving:
Sixteen (16) parts of 26 mm dia. high strength wire rope.
Luffing jib hoist reeving:
Ten (10) parts of 22 mm dia. high strength wire rope.
Luffing jib hoist drum:
Hoist drum
(3rd drum on straight crane)
Powered by hydraulic motor
through planetary reducer.
Drum
Single drum grooved for 22 mm
dia. wire rope.
Brake
A spring set, hydraulically released
multiple-disc brake is internally
configured in the hoist motor and
is operated through a counter-
balance valve.
External ratchet for locking drum.