Leaf Chains are produced for high load, slow speed tension linkage applications. Frequently they are specifi ed for reciprocating motion lifting units such as fork lifts or cranes. These chains are usually provided to a specifi c length and therefore are connected to a clevis block at every single finish. The clevis may accommodate male ends (within or sometimes termed “articulating” back links) or female ends (outside or the links on the pin hyperlink) as needed (see illustration under)
Leaf chains are available in 3 series; AL (light duty), BL (hefty duty), or LL (European typical). For new choices we endorse the BL series in preference towards the AL series since the latter is discontinued being a recognized ASME/ANSI conventional series chain. BL series chains are made in accordance together with the ASME/ANSI B29.8 American Leaf Chain Common. LL series chains are generated in accordance together with the ISO 606 worldwide leaf chain regular.
A chain with an even quantity of pitches often features a 1 male and one female end. It’s additional common to have the chain possess an odd quantity of pitches by which case the both ends might be either male (most typical) or female (much less com-mon). When ordering lengths with an odd quantity of pitches male ends are supplied except if otherwise noted. Clevis pins, typically with cotters at every single finish, are utilized to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not usually) linked for the clevis block which has a cottered style connecting hyperlink. The connecting link may be the female end component in this instance.
Leaf Chain Selection
Make use of the following formula to verify the collection of leaf chain:
Minimal Ultimate Strength > T x DF x SF
T: Calculated Greatest Chain Stress
DF: Duty Issue
SF: Support Aspect
Note the greatest allowable chain velocity for leaf chains is 100ft per minute.