Leaf Chain – General Information and facts and Selection

Leaf Chains are produced for substantial load, slow pace stress linkage applications. Typically they are really specifi ed for reciprocating movement lifting gadgets this kind of as fork lifts or cranes. These chains are usually supplied to a specifi c length and therefore are connected to a clevis block at each and every finish. The clevis might accommodate male ends (within or sometimes named “articulating” hyperlinks) or female ends (outside or the backlinks on the pin link) as necessary (see illustration below)
Leaf chains can be found in 3 series; AL (light duty), BL (hefty duty), or LL (European conventional). For new selections we advise the BL series in preference for the AL series since the latter continues to be discontinued like a acknowledged ASME/ANSI conventional series chain. BL series chains are generated in accordance together with the ASME/ANSI B29.eight American Leaf Chain Regular. LL series chains are developed in accordance using the ISO 606 international leaf chain typical.
A chain with an even amount of pitches usually includes a one particular male and one female end. It can be more frequent to possess the chain possess an odd number of pitches in which case the the two ends will likely be both male (most common) or female (significantly less com-mon). When ordering lengths with an odd quantity of pitches male ends are provided except if otherwise mentioned. Clevis pins, generally with cotters at just about every end, are used to connect male chain ends to female clevis blocks. Chains with female ends are often (but not usually) connected for the clevis block that has a cottered type connecting link. The connecting link may be the female finish part in this case.
Leaf Chain Choice
Use the following formula to verify the collection of leaf chain:
Minimal Ultimate Strength > T x DF x SF
T: Calculated Greatest Chain Tension
DF: Duty Component
SF: Service Issue
Note the maximum allowable chain pace for leaf chains is 100ft per minute.