Leaf Chains are manufactured for substantial load, slow pace tension linkage applications. Frequently they may be specifi ed for reciprocating motion lifting units this kind of as fork lifts or cranes. These chains are ordinarily supplied to a specifi c length and are connected to a clevis block at just about every finish. The clevis may accommodate male ends (inside or sometimes known as “articulating” backlinks) or female ends (outdoors or even the links on the pin link) as required (see illustration below)
Leaf chains can be found in 3 series; AL (light duty), BL (hefty duty), or LL (European normal). For new choices we advocate the BL series in preference to your AL series as the latter has been discontinued being a recognized ASME/ANSI conventional series chain. BL series chains are made in accordance with the ASME/ANSI B29.8 American Leaf Chain Conventional. LL series chains are created in accordance with the ISO 606 global leaf chain regular.
A chain with an even quantity of pitches always has a one particular male and a single female end. It truly is additional common to get the chain possess an odd number of pitches through which situation the both ends will be either male (most typical) or female (less com-mon). When ordering lengths with an odd number of pitches male ends are provided unless otherwise mentioned. Clevis pins, commonly with cotters at every single finish, are made use of to connect male chain ends to female clevis blocks. Chains with female ends are often (but not constantly) linked on the clevis block which has a cottered style connecting hyperlink. The connecting website link is the female end part in this instance.
Leaf Chain Variety
Use the following formula to verify the choice of leaf chain:
Minimum Ultimate Strength > T x DF x SF
T: Calculated Greatest Chain Tension
DF: Duty Issue
SF: Support Component
Note that the optimum allowable chain pace for leaf chains is 100ft per minute.