Leaf Chain – Common Info and Selection

Leaf Chains are manufactured for high load, slow speed tension linkage applications. Often they can be specifi ed for reciprocating movement lifting products such as fork lifts or cranes. These chains are commonly provided to a specifi c length and therefore are connected to a clevis block at each finish. The clevis could accommodate male ends (within or often known as “articulating” back links) or female ends (outdoors or the back links on the pin link) as needed (see illustration under)
Leaf chains are available in 3 series; AL (light duty), BL (hefty duty), or LL (European standard). For new selections we advocate the BL series in preference to the AL series because the latter has been discontinued like a acknowledged ASME/ANSI normal series chain. BL series chains are generated in accordance with the ASME/ANSI B29.eight American Leaf Chain Regular. LL series chains are produced in accordance using the ISO 606 international leaf chain normal.
A chain with an even quantity of pitches often features a one particular male and one female end. It really is far more common to get the chain possess an odd quantity of pitches during which case the both ends is going to be both male (most typical) or female (less com-mon). When ordering lengths with an odd number of pitches male ends are supplied unless otherwise noted. Clevis pins, ordinarily with cotters at each end, are employed to connect male chain ends to female clevis blocks. Chains with female ends are often (but not normally) connected to the clevis block with a cottered style connecting hyperlink. The connecting link would be the female finish component in this case.
Leaf Chain Choice
Use the following formula to verify the choice of leaf chain:
Minimal Ultimate Strength > T x DF x SF
T: Calculated Greatest Chain Stress
DF: Duty Element
SF: Services Component
Note that the greatest allowable chain pace for leaf chains is 100ft per minute.