142 Double Series
This chain type requires the use of non-symmetrical sprocket plates.
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Sprocket Centers: Subtract J from the overall chain width
Flight Length: Subtract K from the overall chain width
Hole Centers: Subtract L from the overall chain length
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Double-Series Flights
The DBL-series flight cutaway diagram shows the slots located at each end of the flight, which allow for expansion and contraction during operation.
One U-pin connector connects each end of this type of flight to a DBL-series chain link. In applications where the flight operates under unusually heavy loads or extreme widths, a stiffener is welded to the back of the flight for extra stability. Although the U-pin is the most common (and preferred) method of fastening DBL flights, 5/16" (8 mm) grade-8 bolts can be substituted.
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