Idiomas disponibles
Idiomas disponibles
Checks on load hook
(see Fig. 4 and Table 1)
Opening dimension C 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 C 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 C nominal mm
Dimension C 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, Thiele or Rud.
0,25
0,5
PCB-S2
PCB-S2
24
25,5
26,4
28,0
15
19
13,5
17,1
0,25
0,5
PCB-S2
PCB-S2
4,0
5,0
3,6
4,5
60,0
75,0
61,8
77,2
Fig. 3 The chain must not be twisted
1
2
PCB-S2
PCB-S2
30
38,5
33
42,3
25
33,5
22,5
30,2
1
2
PCB-S2
PCB-S2
6,3
8,0
5,7
7,2
95,0
120,0
98,0
123,5
4
C
Fig. 4 Load hook
3
5
PCB-S2
PCB-S2
41,5
47
45,5
51,7
39
44,5
35,1
40,0
3
5
PCB-S2
PCB-S2
7,1
9,0
6,4
8,1
105,0
135,0
108,1
139,0
10
PCB-S2
55
60,5
62
55,8
10
PCB-S2
9,0
8,1
135,0
139,0
