Leaf Chains are made for high load, slow pace stress linkage applications. Often they may be specifi ed for reciprocating motion lifting gadgets this kind of as fork lifts or cranes. These chains are commonly supplied to a specifi c length and are linked to a clevis block at every end. The clevis may possibly accommodate male ends (inside or sometimes known as “articulating” links) or female ends (outside or the backlinks to the pin website link) as essential (see illustration under)
Leaf chains can be found in three series; AL (light duty), BL (heavy duty), or LL (European regular). For new selections we advocate the BL series in preference to your AL series since the latter continues to be discontinued as a recognized ASME/ANSI normal 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 global leaf chain typical.
A chain with an even quantity of pitches often features a one male and a single female end. It truly is extra frequent to get the chain possess an odd number of pitches in which case the both ends is going to be either male (most common) or female (much less com-mon). When ordering lengths with an odd quantity of pitches male ends are provided unless otherwise noted. Clevis pins, typically with cotters at each and every finish, are used to connect male chain ends to female clevis blocks. Chains with female ends are often (but not constantly) linked towards the clevis block using a cottered form connecting website link. The connecting website link will be the female end component in this case.
Leaf Chain Choice
Use the following formula to verify the choice of leaf chain:
Minimal Ultimate Strength > T x DF x SF
T: Calculated Optimum Chain Tension
DF: Duty Aspect
SF: Service Element
Note that the highest allowable chain velocity for leaf chains is 100ft per minute.