Leaf Chains are manufactured for high load, slow pace stress linkage applications. Often they’re specifi ed for reciprocating movement lifting devices such as fork lifts or cranes. These chains are typically provided to a specifi c length and therefore are connected to a clevis block at just about every end. The clevis may perhaps accommodate male ends (inside or in some cases referred to as “articulating” links) or female ends (outside or the hyperlinks about the pin website link) as needed (see illustration beneath)
Leaf chains are available in 3 series; AL (light duty), BL (heavy duty), or LL (European conventional). For new selections we advocate the BL series in preference to the AL series as the latter is discontinued being a acknowledged ASME/ANSI regular series chain. BL series chains are produced in accordance with the ASME/ANSI B29.8 American Leaf Chain Regular. LL series chains are generated in accordance with the ISO 606 international leaf chain normal.
A chain with an even amount of pitches normally has a one male and one female finish. It really is more widespread to possess the chain possess an odd number of pitches in which case the both ends will be either male (most common) or female (less com-mon). When ordering lengths with an odd number of pitches male ends are provided except if otherwise noted. Clevis pins, normally with cotters at just about every end, are applied to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not generally) connected for the clevis block having a cottered type connecting link. The connecting hyperlink will be the female finish element in this instance.
Leaf Chain Assortment
Utilize the following formula to confirm the selection of leaf chain:
Minimum Greatest Power > T x DF x SF
T: Calculated Greatest Chain Tension
DF: Duty Component
SF: Services Component
Note that the highest allowable chain velocity for leaf chains is 100ft per minute.