Chain idler drums
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It is John King preference proven over time, to fabricate tail drums from pre hardened plate with a hardness of a minimum of 450 Bnh. This ensure the unit operates almost maintenance free for an extended period. The ends are closed with flanged plates preventing material accumulation whilst adding strength and rigidity.
The centre groove encapsulates the vertical link acting as a guide so the dimensions of the groove are critical to ensure easy entry and exit.
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Chain idler drums |
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Drum |
Bore Sizes |
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D |
W |
T |
A |
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inches |
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20 |
Flight width + 2 |
0.5 |
2.4375 – 3.9375 |
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24 |
Flight width + 2 |
0.5 |
2.4375 – 4.9375 |
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30 |
Flight width + 2 |
0.5 |
3.4375 – 5.9375 |
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36 |
Flight width + 2 |
0.5 |
As required |
