Leaf Chains are produced for high load, slow pace tension linkage applications. Normally they can be specifi ed for reciprocating movement lifting products this kind of as fork lifts or cranes. These chains are typically supplied to a specifi c length and are linked to a clevis block at just about every end. The clevis could accommodate male ends (inside or from time to time termed “articulating” backlinks) or female ends (outdoors or the hyperlinks on the pin website link) as essential (see illustration beneath)
Leaf chains can be found in 3 series; AL (light duty), BL (heavy duty), or LL (European regular). For new selections we endorse the BL series in preference for the AL series as the latter continues to be discontinued like a acknowledged ASME/ANSI normal series chain. BL series chains are generated in accordance using the ASME/ANSI B29.8 American Leaf Chain Typical. LL series chains are developed in accordance using the ISO 606 global leaf chain typical.
A chain with an even variety of pitches generally includes a a single male and a single female end. It is far more common to have the chain possess an odd variety of pitches in which situation the both ends will likely be both male (most typical) or female (much less com-mon). When ordering lengths with an odd quantity of pitches male ends are provided except if otherwise noted. Clevis pins, normally with cotters at each end, are used to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not often) linked to the clevis block having a cottered sort connecting hyperlink. The connecting hyperlink is the female end element in this case.
Leaf Chain Choice
Use the following formula to verify the collection of leaf chain:
Minimal Greatest Power > T x DF x SF
T: Calculated Greatest Chain Stress
DF: Duty Element
SF: Support Aspect
Note the highest allowable chain velocity for leaf chains is 100ft per minute.