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SPECIFICATIONS
21
Supplemental Data
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 de-
rate 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.
•
The crane must be leveled to within 1% on a firm
supporting surface.
•
Boom backstops are required for all boom length.
•
Gantry must be fully raised position for all operations.
•
Counterweights a carbody weights are fully installed.
4. Do not attempt to lift where no radius on load is listed 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
rated loads.
6. Weight of hooks, hook blocks, slings and other lifting
devices are a part of the total load. Their total weight must
be subtracted from the rated load to obtain the weight that
can be lifted.
7. When lifting over boom point with jib or auxiliary sheave,
rated loads for the boom must be deducted as shown
below.
Aux. Sheave for Crane Boom & Luffing Boom
Deductions (Lbs)
700
Fixed Jib
Jib length (ft)
40
60
80
100
Deductions (Lbs)
7,055 8,010 8,965 9,920
8. The total load that can be lifted over a jib is limited by rated
jib loads.
9. Boom lengths for jib mounting are 90 ft (27.4 m) to 250 ft
(76.2 m)
10. 40 ft (12.2 m) jib length with offset angle 10 degrees, one
part of line on hook is not allowed.
11. The total load that can be lifted over an auxiliary sheave is
the value for 700 lbs deducted from the rated load for the
boom without auxiliary sheave, but it should not exceed
auxiliary maximum hoist load.
12. Boom lengths that can attach auxiliary sheave are from
50 ft (15.2m) to 290 ft (88.4m).
13. The boom should be erected over the front of the
crawlers, not laterally. When erecting and lowering the
crane boom at a length of 290 ft (88.4 m) or over and the
crane boom with fixed job at a length of 250 ft (76.2 m),
the blocks for erection must be placed at the end of the
crawlers.
14. The maximum rated load is 5,200 lbs (2.4t).
15. Least stable position is over the side.
16. Maximum hoist load for number of reeving parts of line for
the hoist rope.
Main Boom Hoist Loads
No. of Parts of line
1
2
3
4
5
Maximum Loads (lbs)
29,700 59,500 89,200 119,000 148,800
No. of Parts of line
6
7
8
10
12
Maximum Loads (lbs)
178,500 208,300 238,000 297,600 352,700
No. of Parts of line
14
16
18
20
22
Maximum Loads (lbs)
403,400 451,900 500,400 529,100 550,000
Maximum Load for Jib
No. of Parts of line
1
2
Maximum Loads (lbs)
29,700 59,500
Maximum Load Auxiliary Sheave
No. of Parts of line
1
2
Maximum Loads (lbs)
29,700 59,500
17. Weight of recommended hook block
Hook Block
275 t
165 t
110 t
77 t
39 t
Ball hook
Weight (lbs)
9,260
5,075 3,970 2,650 1,990
1,000
WARNING:
If the weight of the hook block used is lighter than
the above recommended weight, the jib may turn over backward
or will be difficult to lower the empty hook block.
18. When operating the machine with the nesting roller (option)
equipped to the boom insert, following amount of loads must
be reduced from the rating chart.
Boom length (ft)
50, 60 70 80-120 130-190 200-260 270-300
Reduced amount (lbs)
0
100
200
300
400
500
19. Rated loads listed apply only to the machine as originally
manufactured and designed by KOBELCO CONSTRUCTION
MACHINERY CO., LTD. Modifications to this machine or use
of equipment other than that specified can reduce operating
capacity.
20. Designed and rated to comply with ANSI Code B30.5.
Operation of this equipment in excess of rated loads or disregard
of instructions voids the warranty.