Tadano GT-550E-2, Operation And Maintenance Manual

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21
How to Read Performance Data Plate How to Read Performance Data Plate
Boom Lift
See the applicable section of the rated lifting capacity table and
find the rated lifting capacity value that corresponds to the boom
length and load radius
(1) Use the section of the rated lifting capacity table that
corresponds to the status of the outriggers, front jack and
working area.
(2) Take rated lifting capacity value W (tons) that corresponds
to the desired telescoping mode, load radius R (m) and boom
length L (m).
Outriggers fully extended ĂĂĂ
Load
radius(m)
γγ
m
boom
γγ
m
boom •
Lm boom
γγ
m b o o m
γ
γ
R W
γ
Telescoping
mode
ĉ
,
Ċ ĉ ĉ
ƹ The rated lifting capacity values for boom lift assume a
boom with jib and single top stowed.
ƹ The rated lifting capacity values for boom lift are based on
the load radius. The load radii shown in the rated lifting capacity
table include the deflection of the boom under the mass of a
load. When determining capacity from the table, therefore, find
the rated lifting capacity value based on the actual measured
load radius.
ƹ
When the actual boom length exceeds the length specified
for a certain boom extension, check the rated lifting capacity
value for the specified length and for one stage longer, and use
the smaller of the two. (The value may be different from that
indicated by the AML)
ƹ
When the front jack is not extended, note that the lifting
capacity in the over-front area is poorer than in the over-rear
and over-side areas. Keep this in mind when swinging the load
from the over-rear or an over-side area to the over-front area.
ƹ
The mass of load handling devices such as hook blocks
and slings, shall be considered part of the load and must be
deducted from rated lifting capacities.
Jib Lift
See the applicable section of the rated lifting capacity table and
find the rated lifting capacity value that corresponds to the boom
length and load radius.
(1) Use the section of the rated lifting capacity table that
corresponds to the status of the outriggers, front jack,
working area, boom length and boom telescoping mode.
(2) Take rated lifting capacity value W (tons) that corresponds
to the desired jib length L (m), jib offset angle (°) and boom
angle (°).
Outriggers fully extended ĂĂĂ
Boom
angle
Telescoping mode Ċ ĂĂĂ
Lm Jib
e offset 25' offset 45* offset
R R R
γ
γ
©
W
γ
ƹ
The mass of load handling devices such as 4.5-ton hook
and slings, shall be considered part of the load and must be
deducted from rated lifting capacities.
Single Top Lift
For operations with the single top mounted, use the boom lift
section of the rated lifting capacity table to find the allowable
load. Find the rated lifting capacity value based on boom
length and load radius. From that value, subtract the mass of
the main hook block. The resultant value is the rated lifting
capacity for a single top lift. However, remember that the
maximum rated lifting capacity for a single top lift is 4,500 kg.
When the result of the above calculation (< table value > - <
main hook block mass >) is over 4,500 kg, always regard the
rated lifting capacity as 4,500 kg.
Single Top Lift
maximum rated lifting capacity for a single top lift is 4,500 kg.
n (< table value > - <
main hook block mass >) is over 4,500 kg, always regard the
rated lifting capacity as 4,500 kg.