Leaf Chain – Basic Data and Assortment

Leaf Chains are manufactured for higher load, slow velocity stress linkage applications. Frequently they are really specifi ed for reciprocating movement lifting gadgets this kind of as fork lifts or cranes. These chains are ordinarily supplied to a specifi c length and are linked to a clevis block at each finish. The clevis may possibly accommodate male ends (inside or occasionally referred to as “articulating” links) or female ends (outside or the hyperlinks to the pin link) as expected (see illustration below)
Leaf chains can be found in three series; AL (light duty), BL (hefty duty), or LL (European normal). For new selections we suggest the BL series in preference for the AL series as the latter is discontinued being a recognized ASME/ANSI regular series chain. BL series chains are created in accordance with all the ASME/ANSI B29.eight American Leaf Chain Conventional. LL series chains are made in accordance using the ISO 606 international leaf chain regular.
A chain with an even variety of pitches generally features a one male and one female end. It is more popular to get the chain possess an odd number of pitches by which situation the the two ends will probably be either male (most common) or female (significantly less com-mon). When ordering lengths with an odd quantity of pitches male ends are provided unless of course otherwise mentioned. Clevis pins, generally with cotters at just about every end, are utilized to connect male chain ends to female clevis blocks. Chains with female ends are often (but not usually) connected to the clevis block with a cottered style connecting website link. The connecting hyperlink would be the female finish element in this instance.
Leaf Chain Choice
Utilize the following formula to verify the choice of leaf chain:
Minimum Ultimate Power > T x DF x SF
T: Calculated Optimum Chain Tension
DF: Duty Issue
SF: Services Issue
Note the highest allowable chain velocity for leaf chains is 100ft per minute.


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