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FOREWORD
12
HOISTING INSTRUCTIONS
Hoisting
WARNING! Heavy parts (25 kg or more)
•
If a part cannot be smoothly removed from the machine by
hoisting, the following checks should be made:
1.
Check for removal of all bolts fastening the part to the
relative parts.
2.
Check for existence of another part causing interface
with the part to be removed.
Wire Ropes
1.
Use adequate ropes depending on the weight of parts to
be hoisted, referring to the table below:
Wire ropes
(Standard "Z" or "S" twist ropes without galvanizing)
Rope diameter
mm
10
11.2
12.5
14
16
18
20
22.4
30
40
50
60
★ The allowable load value is estimated to be 1/6 or 1/7 of
the breaking strength of the rope used.Sling wire ropes
from the middle portion of the hook.
2.
Slinging near the edge of the hook may cause the rope to
slip off the hook during hoisting, and a serious accident
00-8
B
must be lifted with a hoist etc.
In the DISASSEMBLY AND
ASSEMBLY section, every
part weighing 25 kg or more is
indicated clearly with the
symbol.
Allowable load
kN
tons
9.8
1.0
13.7
1.4
15.7
1.6
21.6
2.2
27.5
2.8
35.3
3.6
43.1
4.4
54.9
5.6
98.1
10.0
176.5
18.0
274.6
28.0
392.2
40.0
can result. Hooks have maximum strength at the middle
00
portion.
3.
Do not sling a heavy load with one rope alone, but sling
with two or more ropes symmetrically wound on to the
load.
WARNING! Slinging with one rope may
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4.
Do not sling a heavy load with ropes forming a wide
hanging angle from the hook. When hoisting a load with
two or more ropes, the force subjected to each rope will
increase with the hanging angles. The table below
shows the variation of allowable load (kg) when
hoisting is made with two ropes, each of which is
allowed to sling up to 1000 kg vertically, at various
hanging angles. When two ropes sling a load vertically,
up to 2000 kg of total weight can be suspended. This
weight becomes 1000 kg when two ropes make a 120°
hanging angle. On the other hand, two ropes are subject
to an excessive force as large as 4000 kg if they sling a
2000 kg load at a lifting angle of 150°.
HOISTING INSTRUCTIONS
cause turning of the load
during hoisting, untwisting of
the rope, or slipping of the
rope from its original winding
position on the load, which
can result in a dangerous
accident
PC200/220LL-8
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