Leaf Chains are created for high load, slow speed tension linkage applications. Often they may be specifi ed for reciprocating movement lifting units such as fork lifts or cranes. These chains are ordinarily supplied to a specifi c length and are linked to a clevis block at each end. The clevis may possibly accommodate male ends (within or occasionally termed “articulating” backlinks) or female ends (outside or even the backlinks on the pin website link) as required (see illustration under)
Leaf chains can be found in three series; AL (light duty), BL (hefty duty), or LL (European standard). For new selections we advise the BL series in preference towards the AL series since the latter has been discontinued like a acknowledged ASME/ANSI normal series chain. BL series chains are developed in accordance together with the ASME/ANSI B29.8 American Leaf Chain Typical. LL series chains are made in accordance with all the ISO 606 international leaf chain conventional.
A chain with an even variety of pitches constantly has a a single male and a single female finish. It truly is much more frequent to possess the chain possess an odd quantity of pitches during which situation the both ends will probably be both male (most common) or female (less com-mon). When ordering lengths with an odd quantity of pitches male ends are supplied unless of course otherwise noted. Clevis pins, commonly with cotters at each finish, are utilised to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not often) linked towards the clevis block using a cottered variety connecting hyperlink. The connecting link would be the female finish part in this instance.
Leaf Chain Variety
Utilize the following formula to verify the variety of leaf chain:
Minimum Greatest Strength > T x DF x SF
T: Calculated Greatest Chain Tension
DF: Duty Element
SF: Services Issue
Note that the greatest allowable chain pace for leaf chains is 100ft per minute.