Leaf Chain – Basic Facts and Assortment

Leaf Chains are made for large load, slow velocity stress linkage applications. Often they’re specifi ed for reciprocating motion lifting devices this kind of as fork lifts or cranes. These chains are ordinarily provided to a specifi c length and are connected to a clevis block at each finish. The clevis may accommodate male ends (inside or at times named “articulating” links) or female ends (outside or the back links around the pin website link) as expected (see illustration below)
Leaf chains can be found in three series; AL (light duty), BL (hefty duty), or LL (European standard). For new choices we recommend the BL series in preference towards the AL series as the latter continues to be discontinued as being a acknowledged ASME/ANSI regular series chain. BL series chains are developed in accordance with all the ASME/ANSI B29.eight American Leaf Chain Typical. LL series chains are produced in accordance using the ISO 606 global leaf chain common.
A chain with an even variety of pitches usually has a a single male and a single female end. It can be additional popular to get the chain possess an odd quantity of pitches during which situation the each ends is going to be either male (most common) or female (much less com-mon). When ordering lengths with an odd amount of pitches male ends are supplied unless otherwise noted. Clevis pins, normally with cotters at each and every end, are made use of to connect male chain ends to female clevis blocks. Chains with female ends are often (but not always) linked for the clevis block using a cottered style connecting hyperlink. The connecting hyperlink could be the female finish element in this instance.
Leaf Chain Selection
Use the following formula to confirm the variety of leaf chain:
Minimum Greatest Power > T x DF x SF
T: Calculated Highest Chain Tension
DF: Duty Aspect
SF: Support Aspect
Note the optimum allowable chain velocity for leaf chains is 100ft per minute.