Leaf Chains are manufactured for substantial load, slow velocity stress linkage applications. Generally they are really specifi ed for reciprocating motion lifting units this kind of as fork lifts or cranes. These chains are typically provided to a specifi c length and therefore are linked to a clevis block at every finish. The clevis could accommodate male ends (inside or in some cases identified as “articulating” links) or female ends (outdoors or even the links around the pin website link) as demanded (see illustration beneath)
Leaf chains can be found in three series; AL (light duty), BL (heavy duty), or LL (European common). For new selections we advocate the BL series in preference to the AL series because the latter has become discontinued as a acknowledged ASME/ANSI conventional series chain. BL series chains are developed in accordance with the ASME/ANSI B29.8 American Leaf Chain Normal. LL series chains are produced in accordance using the ISO 606 worldwide leaf chain normal.
A chain with an even variety of pitches normally includes a 1 male and 1 female finish. It is additional typical to possess the chain possess an odd number of pitches by which situation the the two ends is going to be either male (most common) or female (less com-mon). When ordering lengths with an odd number of pitches male ends are supplied except if otherwise mentioned. Clevis pins, ordinarily with cotters at each and every end, are applied to connect male chain ends to female clevis blocks. Chains with female ends are often (but not always) connected to the clevis block by using a cottered type connecting website link. The connecting hyperlink will be the female end element in this case.
Leaf Chain Selection
Make use of the following formula to confirm the selection of leaf chain:
Minimum Greatest Power > T x DF x SF
T: Calculated Maximum Chain Stress
DF: Duty Component
SF: Service Component
Note that the greatest allowable chain velocity for leaf chains is 100ft per minute.