SQL Square Section Long Link Chains
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Chains of robust and simple construction that offer maximum reliability and extended service.
The technology applied is to produce a chain of the most simple and robust construction suitable for bark, chip and wood waste transport. The chain is therefore of an open and simple construction with square section as opposed to round section to maximise cross sectional area and contact surfaces to maximise interlink wear resistance and sliding surfaces within the conveyor. The casting techniques employed are unique with chains being cast in multiple link sections. John King offer two standard material grades which over time have proven to offer the best mechanical characteristics and consequentially service performance although the versatility of the casting process allows for a wide range of material grades to suit the customer’s specific requirements. More information can be found in the technical section 18.6 – John King irons and steels.
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Material table |
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|
John King |
British Standard Material Designation |
American Material Designation |
DIN |
CHEMICAL COMPOSITION |
Tensile Strength |
Proof Stress |
CHARPY (impact value at 20oC unless otherwise shown) |
Brinell Hardness |
Elongation |
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|
C |
Si |
Mn |
S |
P |
Cr |
Ni |
Mo |
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|
% |
N/mm2 (T/in2) |
Joules |
HBW |
% |
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ALLOY STEELS |
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|
JK/BT3 |
BS10283 BT3 |
AISI 8630 |
1.6546 |
0.28-0.33 |
0.15-0.30 |
0.65-0.95 |
0,03 |
0,03 |
0.40-0.60 |
0.35-0.75 |
0.15-0.25 |
1000-1160 (65-75) |
695 (45) |
20 |
293-341 |
6 |
|
WEAR RESISTANT STEELS |
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|
JK/MN |
BS10283 BW10 |
AISI A128 Grade A |
1.3401 |
1.00-1.25 |
1,00 |
11.00 min |
0,06 |
0,07 |
2 |
– |
– |
– |
– |
– |
– |
– |
Note: Add suffix MN or BT3 to chain code to denote material grade employed.
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SQL Square Section Long Link Chains |
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Chain |
Pitch |
S |
L |
JK/MN Manganese Max. Working Load |
JK/BT3 High Alloys Max. Working Load |
Ultimate Strength |
Estimated Weight |
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|
P |
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|
inches |
lbs |
kN |
lbs |
kN |
lbs |
kN |
lbs |
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|
JKSQ1.125X2X6 |
6 |
1.125 |
2 |
25,000 |
111.21 |
30,000 |
133.45 |
125,000 |
556.03 |
13 |
|
JKSQ1.25X2X6 |
6 |
1.25 |
2 |
30,000 |
133.45 |
36,000 |
160.14 |
150,000 |
667.23 |
16 |
|
JKSQ1.5X2.25X8 |
8 |
1.5 |
2.25 |
43,000 |
191.27 |
51,000 |
226.86 |
215,000 |
956.37 |
21 |
|
JKSQ1.75X2.5X8 |
8 |
1.75 |
2.5 |
58,000 |
258.00 |
69,000 |
306.93 |
285,000 |
1267.74 |
30 |
