American Standard SD type Cast Link Drag Chain (SD)
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The John King SD chain is a long established option in clinker transport and other hot handling applications within cement, lime, ash and similar high duty applications.
The chain series is predominant in North and South America. Traditional material employed in the casting process is Hadfield steel or high manganese steel as BS3100 BW10 (AISI/SAE A128). This abrasion resistant material developed by Hadfield steels in Sheffield England offers improvements in mechanical properties notably hardness and strength as it works and the tougher the work the greater the benefit. This style of chain has demonstrated good performance over an extended period and the material is a first choice in cement applications.
John Kings long experience in casting production and associated metallurgy has allowed the company to enhance the material quality with the addition of a percentage of Chrome. This enhances its as cast quality and eventual operational characteristics.
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John King’s Mangalloy |
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JK Code |
Equivalent Specification |
Nominal chemical composition (Wt. %) |
Applications |
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|
C |
Mn |
Cr |
Mo |
Ni |
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|
JKMN |
ASTM A128 Gr A & B2 & B3 |
1.2 |
13.0 |
2.0 |
– |
– |
Drag links Conveyors / Elevator drive wheel rims Liner plates Wear rails Crusher parts |
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American Standard SD type Cast Link Drag Chain (SD) |
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Chain |
Pitch |
Pins |
End Pin |
Head Pin |
Bearing |
Gearing |
Sidebars |
Average |
Working |
Average |
|
Diameter |
Height |
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|
P |
D6 |
F2 |
F3 |
B |
G |
H |
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|
inches |
lbs |
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SD21 |
9.00 |
1.25 |
8.31 |
8.06 |
12.44 |
9.50 |
3.50 |
182.30 |
23.400 |
46.80 |
|
SD23 |
9.00 |
1.25 |
6.00 |
6.00 |
8.44 |
5.75 |
2.50 |
172.80 |
23.400 |
41.80 |
|
SD27 |
9.00 |
1.13 |
5.06 |
4.81 |
6.87 |
4.25 |
2.50 |
160.50 |
20.100 |
30.70 |
|
SD28 |
9.00 |
0.88 |
8.13 |
8.00 |
12.81 |
10.13 |
2.13 |
139.40 |
17.600 |
26.00 |
|
SD29 |
9.00 |
0.88 |
6.13 |
6.00 |
8.81 |
6.75 |
2.13 |
139.40 |
17.600 |
20.80 |
