Leaf Chain – Common Info and Selection

Leaf Chains are created for higher load, slow pace stress linkage applications. Often they may be specifi ed for reciprocating movement lifting gadgets this kind of as fork lifts or cranes. These chains are normally provided to a specifi c length and therefore are linked to a clevis block at every single finish. The clevis may perhaps accommodate male ends (within or occasionally termed “articulating” links) or female ends (outside or the hyperlinks to the pin website link) as needed (see illustration below)
Leaf chains are available in 3 series; AL (light duty), BL (heavy duty), or LL (European standard). For new selections we endorse the BL series in preference to the AL series because the latter is discontinued as being a recognized ASME/ANSI conventional series chain. BL series chains are generated in accordance together with the ASME/ANSI B29.8 American Leaf Chain Typical. LL series chains are developed in accordance with all the ISO 606 international leaf chain conventional.
A chain with an even variety of pitches normally includes a one particular male and one particular female end. It is actually a lot more common to have the chain possess an odd amount of pitches in which case the the two ends will be either male (most common) or female (less com-mon). When ordering lengths with an odd amount of pitches male ends are provided unless otherwise noted. Clevis pins, commonly with cotters at just about every finish, are made use of to connect male chain ends to female clevis blocks. Chains with female ends are frequently (but not generally) connected to the clevis block which has a cottered style connecting link. The connecting link would be the female end element in this instance.
Leaf Chain Variety
Utilize the following formula to confirm the selection of leaf chain:
Minimal Greatest Power > T x DF x SF
T: Calculated Greatest Chain Stress
DF: Duty Aspect
SF: Support Factor
Note that the greatest allowable chain velocity for leaf chains is 100ft per minute.