Idiomas disponibles
Idiomas disponibles
Checks on load hook
(see Fig. 4 and Table 1)
Opening dimension E on the hooks is important. A hook with too
large a maximum dimension has been exposed to overloading
or overheating. It therefore does not have the necessary load
capacity. The hooks may also have been exposed to long-term
wear (dimension K).
Hooks must be discarded and replaced if:
•
The maximum E value is exceeded (according to Table 1)
•
The minimum K value falls short (according to Table 1)
•
The hook shows signs of cracking
•
The hook is deformed or otherwise damaged
Defective hooks must be replaced before using the chain block
again.
Table 1 Load hook
WLL t
Model
Dimension E nominal mm
Dimension E max mm
Dimension K nominal mm
Dimension K min mm
Checks on load chain
(see Fig. 5 and Table 2)
Inspect the load chain over its whole length to detect any deformed or otherwise damaged links. Make a check measurement of suspect links.
Measure the worn areas Also, every 300 mm (normally), make check measurements of the internal length of 5 links (pitch dimension 5xP – ac-
cording to Table 2).
Fig 5 Checking load chain dimensions
Table 2
Load chain
Max. load t
Model
Link diameter nominal mm
Link diameter min. mm
Pitch dimension (5xP) nominal mm
Pitch dimension (5xP) max. mm
The load chain must be discarded and replaced if:
•
cracks are detected on any link
•
any link is deformed or otherwise damaged
•
The minimum value of any link's diameter falls short
•
the maximum value of the pitch dimension is exceeded at any point
•
the chain is damaged by overheating or has been affected by weld splatter
Load chains must not be repaired – they must be replaced by new chain. If it is desired to lengthen the chain, it must be replaced by a new and
longer chain.
Replacement of the chain shall be performed professionally by an authorized repairer and the chain must meet the requirements stated in the
standard EN 818-7, Grade T from the following manufacturers: Chaineries Limousines, Pewag, Kito Chain, Retezarna or Rud.
FIG. 3 The chain must not be twisted
0,25
0,5
PACB-S1
PACB-S1
35,5
42
40,82
48,3
12,9
15,6
11,6
14,0
0,25
0,5
PACB-S1
PACB-S1
3,0
4,0
2,7
3,6
45,0
60,0
46,35
61,8
4
E
Fig. 4 Load hook
1
2
PACB-S1
PACB-S1
49,5
58,5
56,92
67,27
20,0
26,5
18,0
23,8
1
2
PACB-S1
PACB-S1
5,6
8,0
5,04
7,2
78,5
120
80,86
123,6
K
3
PACB-S1
61,9
71,18
31,2
28,0
3
PACB-S1
7,1
6,39
100,5
103,52
