Furukawa Unic URW370C4U Series, Operation & Maintenance Manual

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7-5
DEFINITION OF TERMS
◆
Since the rated load varies according to how the outriggers are extended, the rated load
has been set for respective extended conditions.
Figure below shows the cases where the outriggers are extended to “maximum”, “halfway”,
and “minimum”.
Outriggers extended halfway Outriggers extended to minimum
●
(5940mm)
(5900mm)
(5720mm)
19.5ft
18.7ft
19.4ft 17.0ft
15.3ft
(4840mm)
15.6ft
15.9ft
(4750mm)
(5170mm)
(4080mm)
13.4ft
13.4ft
(4670mm)
(4080mm)
Outriggers extended to maximum
Front
Rear
Mark
(2nd)
Rear
Front
Rear
Front
●
Mark
(1st)
'Outriggers extended to maximum' means that the inner box is extended to a position where
the 2nd mark is visible.
'Outriggers extended halfway' means that the inner box is extended to a position where the
1st mark is visible.
'Outriggers extended to minimum' means that the inner box is extended to a position where
the 1st mark is invisible.
When each of 4(four) outriggers is set to different extension, operate the crane by using the
worst extended capacity.
. 3
URW506C4U
URW547C4U