Leaf Chain – General Facts and Choice

Leaf Chains are made for large load, slow velocity tension linkage applications. Typically they may be specifi ed for reciprocating movement lifting products such as fork lifts or cranes. These chains are normally supplied to a specifi c length and therefore are linked to a clevis block at every single end. The clevis may possibly accommodate male ends (within or at times identified as “articulating” backlinks) or female ends (outside or the links around the pin link) as needed (see illustration under)
Leaf chains can be found in 3 series; AL (light duty), BL (hefty duty), or LL (European typical). For new choices we recommend the BL series in preference to the AL series as the latter has been discontinued like a acknowledged ASME/ANSI typical series chain. BL series chains are made in accordance with the ASME/ANSI B29.8 American Leaf Chain Common. LL series chains are produced in accordance with the ISO 606 worldwide leaf chain common.
A chain with an even number of pitches usually has a one particular male and 1 female finish. It can be much more popular to have the chain possess an odd amount of pitches in which situation the both ends will probably be either male (most common) or female (much less com-mon). When ordering lengths with an odd amount of pitches male ends are supplied except if otherwise mentioned. Clevis pins, normally with cotters at every single end, are employed to connect male chain ends to female clevis blocks. Chains with female ends are sometimes (but not constantly) linked to the clevis block with a cottered variety connecting hyperlink. The connecting link could be the female finish part in this instance.
Leaf Chain Choice
Make use of the following formula to confirm the choice of leaf chain:
Minimal Ultimate Strength > T x DF x SF
T: Calculated Optimum Chain Stress
DF: Duty Factor
SF: Service Element
Note the highest allowable chain pace for leaf chains is 100ft per minute.