Lifting capacity of the excavator
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Lifting capacity of the excavator
Constructive calculation of lifting capacity
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The lifting capacity of the excavator is based on ISO 10567 and does not exceed 75 % of the static tipping
load or 87 % of the hydraulic lifting capacity of the machine.
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The lifting capacity is measured at the front pin part of the arm with the arm fully extended. The arm is fully in
the dump position. The boom cylinder is the operating cylinder.
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The lifting conditions are:
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As well as the lifting conditions, the length of the arm also affects the permitted lifting capacities and the sta-
bility of the machine. Compare the dimensions of the machine arm with the details given in the lifting capacity
tables, in order to use the correct lifting capacity table for your machine.
Lifting attachment
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The machine may not be deployed for lifting operation unless there is a pipe safety valve installed on the boom
cylinder and on the arm cylinder according to EN 474-5. An additional pipe safety valve in accordance
with EN 474-1 must be installed before using the dozer for lifting operation support.
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When the overload warning function is enabled, the machine may be used for lifting operation only. For more
information, see chapter Accessories, section KUBOTA Pipe safety valve (page 161).
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The lifting attachment is to be attached to the implement or to other parts of the excavator in such a manner
as to exclude the possibility of the lifting rope accidentally unhooking.
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Attachment to the implement or the equipment must be such as to guarantee the optimum field of vision be-
tween the operator and the guide [the person who fastens the lifting rope to the lifting attachment].
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The lifting attachment is to be positioned so that the lifting rope is not deflected from its vertical direction of
tension by other parts of the machine.
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The lifting attachment must be formed and positioned in such a manner as to exclude the possibility of the
lifting rope accidentally slipping.
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Care must be taken when positioning the lifting attachment that there is no risk of restriction (e.g. becoming
caught on something) during normal operation of the excavator or when working on any particular object.
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Load suspensions (e.g. hooks) may only be welded on by suitably qualified personnel. For this type of work,
please contact your KUBOTA dealer.
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At every point of the implement or the boom, the lifting attachment must withstand a load of two-and-a-half-
times its rated lifting load.
1.
Swivel up to 360°
2.
Over front end, dozer down
Dimensions for the arm, see table "Design of arm" in the section "Dimensions" (page 36).
