248 HYLAB 5 crawler crane at CONEXPO
Lexington, Ky (March, 2005) - Link-Belt is exhibiting its 248 HYLAB 5
200 Ton (181.44 mt) lattice boom crawler at CONEXPO 2005. Introduced to
the North American market last year, the crane features enhancements
from the previous model that include increased lift capacities, a new,
larger operator station, a new SML-10 rated load indicator and slab-type
counterweights with a new removal system. New also to the 248 H5 is a
remote hydraulic oil cooler and more engine horsepower with the new
Mitsubishi 6D24-TLA2h (Tier 2) 263 hp (196 kw) diesel engine. The 248 H5
attachment now incorporates bar-type boom pendants that store easily on
To maximize value, the 248 H5 comes standard with selectable freefall
on front and rear hoists along with an automatic brake mode function.
The outstanding lift capacity coupled with the 248’s proven
transportability and quick unassisted set-up time makes this one of the
most significant crawler cranes ever introduced to the market.
“We’ve made a great crane even better,” says Pat Collins, senior
product manager, lattice boom cranes. “The 248 owners’ group will
quickly pick up on the features we’ve added to make the 248 H5 stand out
in a class all by itself.”
Link-Belt’s HYLAB (HYdraulic LAttice Boom) Series of lattice boom cranes
with hydraulic controls was first introduced in 1987 and today has more
that 2000 units operating worldwide. Today’s new HYLAB 5 series crane
enjoys a legacy of proven customer satisfaction with bulletproof
reliability, low operating costs and outstanding productivity. The HYLAB
5’s continue to lead the industry in bringing to market enhanced
features that set the standard for crawler crane performance.
200 Ton Crawler Crane That Self-Strips to Less Than 84,000 Pounds
Link-Belt leads the way again in designing transportable, big
capacity crawler cranes. The built-in self-stripping features allow the
248 H5 to quickly remove boom, counterweight and tracks unassisted. The
remaining upper and carbody plus the 20 ft (6.09 m) base and 10 ft (3.04
m) rigging section weighs less than 84,000 lbs (38 101 kg) and this load
can be permitted in all of North America. Individual tracks weigh 36,410
lbs (16 515 kg) each and are light enough to be combined with boom and
jib sections and hauled as legal loads. Modular counterweight pieces are
designed to facilitate highway transport when loaded with boom sections.
New self-storing bar-type pendants for boom support are easily stored on
each boom section along with the pins for ease of transport and
assembly. The entire "strip down" or "erection" procedure can be
accomplished in two hours or less, without a helper crane.
The following features permit quick and easy self-assembly or
- A new hydraulic counterweight removal system takes the
counterweight all the way to the ground.
- Hydraulic track drive system requires only quick disconnect
hoses to be disconnected before removing side frames – no
mechanical drive shafts or couplers.
- Hydraulic carbody jacks support the unit during track
removal and are designed to raise the carbody to a 44" (111.76
cm) clearance height that allows a lowboy to back under for
loading or unloading.
- Standard mast or optional 10’ (3.04 m) boom section with
sheaves allows the machine to load or unload track units,
counterweights, and boom sections, as well as handling assembly
and disassembly of the crane itself.
Superior Reach and Capacity
The 248 H5 has 280 ft (85.34 m) of main boom. The 30 ft to 100 ft
(9.14 m to 30.48 m) fixed jib design can be installed as a fixed jib on
the conventional boom or as a fixed jib on the luffing jib to optimize
the "up and over" capability of this crawler crane. Equipped with the
luffer, the 248 H5 is capable of working with 190 ft (57.91 m) of
standard boom, plus 160 ft (48.77 m) of luffing jib.
Low Ground Bearing Pressure
Link-Belt has chosen a design philosophy that calls for a low center
of gravity, a large crawler base, wide shoes, and a variety of
counterweight options. The 28.5 ft (8.69 m) long by 23.5 ft (7.16 m)
wide lower with 44 in (111.76 cm) track shoes, coupled with 92,000 lbs
(41 731 kg) of standard counterweight, results in capacities that are
very competitive. The resulting ground bearing pressure, 11 psi, is
extremely low – 30% lower than its closest competition
Field Proven Hydraulic Power Flow System
The upper design incorporates Link-Belt's proven state-of-the-art
variable displacement hydraulic power system first introduced with the
HYLAB crawler cranes in 1987. With this system, load hoist and lowering
speeds are directly proportional to hoist lever movement. Boom hoist
speed is controlled in a similar manner.
Independent speed control of each function gives unprecedented
ability to spot and place loads. In addition, Link-Belt's exclusive
"fine inching control" mode can be selected for ultra-precise work. True
gravity freefall combined with maximum line speeds in excess of 550 fpm
(168 m/min) are available for high-speed crane work. Hoist drums are
extra wide and have a large diameter to provide more than adequate rope
storage for crane operation. Parallel grooved laggings allow even
spooling of the cable.
Selectable automatic drum brakes are an integral part of the hoist
drum system; they are automatically applied whenever the hoist control
levers are placed in the neutral position. For faster cycle times and
increased productivity, the automatic brake system can be switched off
and the machine operated in the freefall mode. Controlled by foot
pedals, the large drum brakes are designed for steel erection, pile
driving, concrete bucket handling, and other high-speed work, yet are
still smooth enough to ensure precise placement of the load.
Meets OSHA Requirements for Personnel Handling
The 248 H5 was designed to meet OSHA Ruling 29 CFR (October 3, 1988
and April 18, 1989) regarding anti-two block and automatic brake systems
on cranes used to handle personnel. This ruling states that "any cranes
or derricks which are used to hoist personnel shall be equipped with a
device which prevents the load hook block from contacting the boom tip.
"All HYLAB cranes including the new 248 H5 feature anti-two block
systems as standard equipment. When activated, this device automatically
and smoothly disengages the hoist function, applies the main hoist brake
and activates a warning buzzer to alert the operator.
More Standard Features
Another standard feature of the 248 H5 is the SML-10 rated capacity
limiter (RCL). Using various sensing devices, the SML-10 monitors lift
functions and provides a continuous reading of the crane’s rated
capacity. The readings continuously change as the crane moves through
the lift. These readings include information concerning certain
geometrical data such as main boom angle, jib angle, radius, and weight
of the load on the hook.
Other standard features of the 248 H5 include high capacity BTU
heating and cooling, a new wider, bigger cab, a new Mitsubishi
6D24-TLA2h (Tier 2) 263 hp (196 kw) diesel engine, an audio-visual swing
alarm, pilot operated hydraulic controls, hydraulic carbody jacks, and
oil filled and sealed track rollers.