Leaf Chains are created for substantial load, slow velocity tension linkage applications. Normally they are specifi ed for reciprocating motion lifting devices such as fork lifts or cranes. These chains are commonly provided to a specifi c length and are connected to a clevis block at every finish. The clevis could accommodate male ends (inside or occasionally termed “articulating” links) or female ends (outside or even the hyperlinks on the pin website link) as demanded (see illustration under)
Leaf chains can be found in 3 series; AL (light duty), BL (hefty duty), or LL (European typical). For new selections we propose the BL series in preference for the AL series since the latter has become discontinued being a acknowledged ASME/ANSI regular series chain. BL series chains are generated in accordance using the ASME/ANSI B29.8 American Leaf Chain Standard. LL series chains are generated in accordance with the ISO 606 international leaf chain conventional.
A chain with an even number of pitches usually includes a one particular male and a single female end. It is actually a lot more prevalent to get the chain possess an odd variety of pitches through which situation the the two ends will probably be either male (most typical) or female (significantly less com-mon). When ordering lengths with an odd number of pitches male ends are supplied unless of course otherwise mentioned. Clevis pins, typically with cotters at each and every end, are applied to connect male chain ends to female clevis blocks. Chains with female ends are sometimes (but not always) connected for the clevis block that has a cottered style connecting website link. The connecting hyperlink would be the female end element in this instance.
Leaf Chain Variety
Make use of the following formula to verify the selection of leaf chain:
Minimum Ultimate Strength > T x DF x SF
T: Calculated Maximum Chain Stress
DF: Duty Factor
SF: Services Component
Note the maximum allowable chain speed for leaf chains is 100ft per minute.