Hitachi Sumitomo SCX1500A-3 Crawler Crane
by: Steven Downes
Presented here is the 1:50th scale Hitachi Sumitomo SCX1500A-3
crawler crane which has been produced in China. The model is highly
detailed and comes in component form, just like the real crane
allowing it to be displayed in transport configuration.
The SCX1500A-3 is rated at 150 ton at 4.5 meter and is powered
by a new generation Izuzu Stage IIIB compliant diesel engine. It is
suitable for civil engineering, material handling and construction
applications with a boom length from 15 to 75 meters and an
optional jib length between 10 and 28 metres.
The 1:50th scale model is presented with the minimum 15 meter
boom configuration and all the parts needed to erect the crane,
from individual track frames, counterweights, undercarriage weights
and mast sections.
The rear counterweight sections consist of the main base plate
which bolts onto the superstructure along with five main sections
and an upper section which also has cast simulated lifting eyes.
Two additional undercarriage ballast plates are also included and
connect to the undercarriage once assembled.
The two boom sections included in the box allow the crane to be
constructed into the heavy lift version of the crane, with metal
latticework looking very authentic and strong. The two boom
sections are connected together with plastic pins which are tight
enough to stay in position.
Out of the box, the main body and undercarriage frame are
connected together and four pivoting arms are connected to the
undercarriage to allow the model to simulate the self fixing of the
track frames. Four pads are provided which located with the four
jacking legs which are adjustable by rotating them, raising the
entire crane body.
The track frames connect easily to the undercarriage with four
long plastic pins locking them into position. The all metal
construction of the track frames and individually linked track pads
gives the model a nice heavy feel with very nice cast detailing on
each track pad and tensioned idlers keeping the tracks taut while
allowing them to rotate smoothly.
The insides of the track frames have integrated steps allowing
easy access up to the upper carriage while the front surfaces have
good structural detailing.
Once the track frames are positioned, the undercarriage ballast
plates lock into place onto the pivoting arms used to raise the
crane. Once fitted, the rear counterweight tray can be positioned
and again locks into position using two plastic pins. The printing
of the Hitachi Sumitomo name and safety warning labels is crisp and
clear, as are the graphics on the sides of the body.
The entire cabin is fastened to the upper carriage on a rotating
joint, allowing the cab to rotate through 90 degrees with front and
side access platforms, scaled grab rails with rear view mirror,
front and roof windscreen wipers and printed window seals all
adding to the level of realism. The cabin interior has been
authentically modelled with the driver's seat, control housing and
controls visible through the clearly glazed windows.
Three winding keys are included and locate into the holes in the
side of the upper body. The side panel casting has some very crisp
detailing with all the panels highlighted with very nicely inset
door handles which look authentic. Metal grab rails are located
along the upper edge of the body with access steps leading up to
the upper works, again fitted with authentically scaled safety
railings which also include clip on safety mirrors.
The rear counterweight sections fit onto each other and once
assembled, two plastic rods pass through the holes to keep them in
position. Metal walkways are integrated into the body castings and
run along the length of the upper works, all having a finely
textured anti-slip upper surface.
Assembly of the boom is straight forward with single piece
pulleys used on the A-frame. The instructions suggest using only
four passes of the rope to allow the boom to move easily during
raising and lowering and this works very well, with the rear most
winch controlling the movement while preventing the boom from
lowering on its own.
Two main lifting winches are installed and pre-wound with rope
with the front-most winch used to operate the hook block which has
a five sheaves, again produced as a single piece. Reeving the hook
does take a little patience as the rope needs to pass under the
small metal guides but once rigged, the hook is fairly heavy and
has enough weight to allow it to lower as the winch is
The paint finish is of a very high quality and finish with an
even coat allowing all the casting detail to be seen. The graphics
on the body sides are authentically applied with small safety
labels on the counterweight tray and direction arrows found on the
The model is produced primarily of metal and has a nice heavy
feel with plastic only used for for small detailing parts like the
self fit mirrors, access ladder and the pins used for assembly.