Quality Inspection for Low Profile Chain Hoist - Hoist Chain – Chigong
Quality Inspection for Low Profile Chain Hoist - Hoist Chain – Chigong Detail:
Category
Lifting and lashing, hoisting chain,short link chain, round link chain lifting,Grade T chain, Grade DAT chain,Grade DT chain, DIN EN 818-7short link chain for lifting purposes,fine tolerance hoist chain,alloy steel chain
Application
Lifting and lashing, loads lifting, loads binding
Figure 1: hoist chain / links
Key
| 1 | Traverse centre line of the link | l | is the multiple pitch length |
| p | is the pitch | dm | is the material diameter as measured |
| ds | is the weld diameter | e | is the length dimensionally affected by welding |
| w3 | is the internal width at the weld | w2 | is the external width over the weld |
Table 1: hoist chain / link dimensions (mm)
|
Nominal size dn |
Material diameter tolerance |
Pitch |
Width |
Gauge length of 11 x pn |
Weld diameter ds max. |
|||
|
pn |
tolerance1) |
internal w3 min. |
external w2 max. |
l |
tolerance1) |
|||
|
4 |
± 0.2 |
12 |
0.25 |
4.8 |
13.6 |
132 |
0.6 |
4.3 |
|
5 |
± 0.2 |
15 |
0.3 |
6.0 |
17.0 |
165 |
0.8 |
5.4 |
|
6 |
± 0.2 |
18 |
0.35 |
7.2 |
20.4 |
198 |
1.0 |
6.5 |
|
7 |
± 0.3 |
21 |
0.4 |
8.4 |
23.8 |
231 |
1.1 |
7.6 |
|
8 |
± 0.3 |
24 |
0.5 |
9.6 |
27.2 |
264 |
1.3 |
8.6 |
|
9 |
± 0.4 |
27 |
0.5 |
10.8 |
30.6 |
297 |
1.4 |
9.7 |
|
10 |
± 0.4 |
30 |
0.6 |
12.0 |
34.0 |
330 |
1.6 |
10.8 |
|
11 |
± 0.4 |
33 |
0.6 |
13.2 |
37.4 |
363 |
1.7 |
11.9 |
|
12 |
± 0.5 |
36 |
0.7 |
14.4 |
40.8 |
396 |
1.9 |
13.0 |
|
13 |
± 0.5 |
39 |
0.8 |
15.6 |
44.2 |
429 |
2.1 |
14.0 |
|
14 |
± 0.6 |
42 |
0.8 |
16.8 |
47.6 |
462 |
2.2 |
15.1 |
|
16 |
± 0.6 |
48 |
0.9 |
19.2 |
54.4 |
528 |
2.5 |
17.3 |
|
18 |
± 0.9 |
54 |
1.0 |
21.6 |
61.2 |
594 |
2.9 |
19.4 |
|
20 |
± 1.0 |
60 |
1.2 |
24.0 |
68.0 |
660 |
3.2 |
21.6 |
|
22 |
± 1.1 |
66 |
1.3 |
26.4 |
74.8 |
726 |
3.5 |
23.8 |
|
1) These tolerances are usually divided into + 2/3 and – 1/3 for both the individual link and the standard gauge length. |
||||||||
Table 2: hoist chain working load limit (WLL)
|
Nominal size dn mm |
Chain type T t |
Chain type DAT t |
Chain type DT t |
|
4 5 6 |
0.5 0.8 1.1 |
0.4 0.63 0.9 |
0.25 0.4 0.56 |
|
7 8 9 |
1.5 2 2.5 |
1.2 1.6 2 |
0.75 1 1.25 |
|
10 11 12 |
3.2 3.8 4.5 |
2.5 3 3.6 |
1.6 1.9 2.2 |
|
13 14 16 |
5.3 6 8 |
4.2 5 6.3 |
2.6 3 4 |
|
18 20 22 |
10 12.5 15 |
8 10 12.5 |
5 6.3 7.5 |
|
mean stress N/mm2 |
200 |
160 |
100 |
Table 3: hoist chain manufacturing proof forces and breaking forces
|
Nominal size dn mm |
Manufacturing proof force (MPF) kN min. |
Breaking force (BF) kN min. |
|
4 |
12.6 |
20.1 |
|
5 |
19.6 |
31.4 |
|
6 |
28.3 |
45.2 |
|
7 |
38.5 |
61.6 |
|
8 |
50.3 |
80.4 |
|
9 |
63.6 |
102 |
|
10 |
78.5 |
126 |
|
11 |
95 |
152 |
|
12 |
113 |
181 |
|
13 |
133 |
212 |
|
14 |
154 |
246 |
|
16 |
201 |
322 |
|
18 |
254 |
407 |
|
20 |
314 |
503 |
|
22 |
380 |
608 |
Table 4: total ultimate elongation and surface hardness
|
|
hoist chain types |
||
|
T |
DAT |
DT |
|
|
Total ultimate elongation A %min |
10 |
10 |
5 |
|
Surface hardness min dn < 7 mm, HV 5 dn = 7 mm to 11 mm, HV 10 dn > 11 mm, HV 10 |
360 360 360 |
500 500 450 |
550 550 500 |
Product detail pictures:
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