15
Check measurement of chain (See Fig. 7 and table 3)
Inspect the 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), take
check measurements of the internal length of 5 links (pitch dimension 5xP according to Table
3).
Fig 7 Checking chain dimensions
Table 3 Chain dimensions
Max. load
t
0.25
0.5
1
1.5
3
6
9
Model
SLB
025
SLB
050
SLB
100
SLB
150
SLB
300
SLB
600
SLB
900
Link diameter nominal
mm
4,0
5,0
6,0
7,1
10,0
10,0
10,0
Link diameter min
mm
3,6
4,5
5,4
6,4
9,0
9,0
9,0
Pitch dimension (5xP)
nominal
mm
60,0
75,0
90,0
105,0
140,0
140,0
140,0
Pitch dimension (5xP)
max
mm
61,8
77,2
92,7
108,1
144,2
144,2
144,2
The 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
Chains must
not
be repaired
– they must be replaced by new original chain. If it is desired to
lengthen the chain, it must be replaced by a new and longer chain.
