Leaf Chains are produced for high load, slow velocity tension linkage applications. Frequently they are really specifi ed for reciprocating motion lifting gadgets 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 each and every finish. The clevis may accommodate male ends (within or sometimes identified as “articulating” back links) or female ends (outside or the links over the pin link) as needed (see illustration under)
Leaf chains are available in 3 series; AL (light duty), BL (hefty duty), or LL (European common). For new choices we endorse the BL series in preference towards the AL series because 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 get 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 number of pitches male ends are supplied except if otherwise noted. Clevis pins, generally with cotters at each and every 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.