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STANDARDCONFIGURATION
CRANE - SUPPLEMENTAL DATA
Boom and Fixed Jib
9. The total load that can be lifted over an auxiliary sheave
is the value for 1,500 lbs deducted from rated load for
the boom without auxiliary sheave, but it should not
exceed auxiliary maximum hoist loads.
10. The total load that can be lifted over a jib is limited by
rated jib loads.
11. Boom lengths that can attach auxiliary sheave are from
78 ft (24 m) to 276 ft (84 m).
12. Boom lengths for jib mounting are 98 ft (30 m) to 256 ft
(78 m).
13. In case of 40 ft (12.2 m) jib length with offset angle 10 degrees
and one part of line on hook, additional parts required-contract
KOBELCO CONSTRUCTION MACHINERY U.S.A. INC.
14. The boom should be erected over the front of the
crawlers, not laterally. When erecting and lowering
the luffing boom at length of 256 ft (78 m) or over, the
blocks for erection must be placed at the end of the
crawlers.
15. The minimum rated load is as shown below
Crane boom 9,700 lbs (4.4 t)
Fixed jib
5,900 lbs (2.7 t)
16. Least stable position is over the side.
1. Rated loads included in the charts are the maximum
allowable freely suspended loads at a given boom length,
boom angle and load radius, and have been determined
for the machine standing level on firm supporting surface
under ideal operating conditions. The user must limit or
derate rated loads to allow for adverse conditions (such as
soft or uneven ground, out-of-level conditions, wind, side
loads, pendulum action, jerking or sudden stopping of
loads, inexperience of personnel, multiple machine lifts,
and traveling with a load).
2. Rated loads do not exceed 75% of minimum tipping
loads. Rated loads based on factors other than machine
stability such as structural competence are shown by
asterisk * in the charts.
3. The machine must be reeved and set-up as stated in the
operation manual and all the instruction manuals. If these
manuals are missing, obtain replacements.
• Boom backstops are required for all boom lengths.
• The crane must be leveled to within 1% on a firm
supporting surface.
• Counterweights and carbody weights must be installed
according to the instruction.
4. Do not attempt to lift where no ratings are shown as
crane may tip or collapse.
5. Attempting to lift more than rated loads may cause
machine to tip or collapse. Do not tip machine to
determine capacity.
6. Weight of hooks, hook blocks, slings and other lifting
devices are a part of the total load. Their total weight
must be sub-tracted from the rated load to obtain the
weight that can be lifted.
7. When main hook installed to the boom point, deduct
main hook weight from fixed jib chart.
8. When lifting over boom point with jib or auxiliary
sheave, rated loads for the boom must be deducted as
shown below.
Aux. sheave for luffing boom
Deductions : lbs
1,500
Fixed jib
Jib length : ft
40
60
80
100
Deductions : lbs
7,055
8,010
8,965
9,920