Leaf Chain – Common Information and facts and Assortment

Leaf Chains are produced for higher load, slow speed stress linkage applications. Frequently they are specifi ed for reciprocating motion lifting units such as fork lifts or cranes. These chains are usually supplied to a specifi c length and therefore are connected to a clevis block at every single finish. The clevis might accommodate male ends (within or occasionally termed “articulating” links) or female ends (outdoors or the links on the pin hyperlink) as necessary (see illustration under)
Leaf chains are available in 3 series; AL (light duty), BL (hefty duty), or LL (European typical). For new selections we recommend the BL series in preference towards the AL series since the latter has become discontinued being a recognized ASME/ANSI standard series chain. BL series chains are developed in accordance together with the ASME/ANSI B29.8 American Leaf Chain Typical. LL series chains are produced in accordance together with the ISO 606 global leaf chain normal.
A chain with an even variety of pitches constantly features a a single male and 1 female end. It’s extra common to have the chain possess an odd quantity of pitches during which situation the each ends are going to be either male (most common) or female (significantly 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 employed to connect male chain ends to female clevis blocks. Chains with female ends are frequently (but not often) connected on the clevis block with a cottered type connecting hyperlink. The connecting link would be the female end element in this instance.
Leaf Chain Choice
Make use of the following formula to verify the variety of leaf chain:
Minimal Ultimate Power > T x DF x SF
T: Calculated Maximum Chain Stress
DF: Duty Component
SF: Service Aspect
Note the maximum allowable chain velocity for leaf chains is 100ft per minute.