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Use the following chart to determine when the hook must be replaced. Replacement of the hook
is necessary if any of the previous page problems are found or the maximum dimensions on the
charts that follow are reached.
Hook throat opening
Hook lower profile
Chain Inspection
Inspect chain before each use. Between regular inspections visually check on a daily basis the following:
• Clean chain before inspection using a non-caustic/non-acid solvent
• Lubrication of the chain may be necessary if it binds up or is noisy
• Chain feeds smoothly into and from the hoist and does not emit cracking noise when hoisting a load
• Visually examine link by link for any nicks, gouges, weld splatter, corrosion, or distorted links pay close
attention to chain's contact points, which may show excessive wear.
• Test hoist with load and observe operation of chain over load sheaves.
Size
Standard
Max K
K (mm)
(mm)
0.5 ton
28
30.5
1 ton
32
34.4
1.5 ton
36
39
2 ton
36
39
3 ton
46
49.5
5 ton
46
51
10 ton
57
65
20 ton
82
101
30 ton
106
125
Size
Standard
Min H
H (mm)
(mm)
.5 ton
19.2
17.2
1 ton
21
18.4
1.5 ton
29
26.1
2 ton
29
26.1
3 ton
35
31.6
5 ton
45
39.5
10 ton
55
49
20 ton
88.5
79.5
30 ton
88.5
79.5
EN pg.14
Standard
Min T
T (mm)
(mm)
15
13.7
15.6
14
21
19.3
21
18.9
24
21.5
32
28.8
41
37
60
54
60
54
Chain wear
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