Leaf Chain – Basic Information and Choice

Leaf Chains are produced for large load, slow pace tension linkage applications. Frequently they’re specifi ed for reciprocating motion lifting gadgets this kind of as fork lifts or cranes. These chains are ordinarily supplied to a specifi c length and therefore are linked to a clevis block at just about every end. The clevis might accommodate male ends (inside or sometimes named “articulating” back links) or female ends (outdoors or the links on the pin hyperlink) as required (see illustration below)
Leaf chains are available in three series; AL (light duty), BL (heavy duty), or LL (European regular). For new choices we propose the BL series in preference towards the AL series because the latter is discontinued as a acknowledged ASME/ANSI regular series chain. BL series chains are developed in accordance with the ASME/ANSI B29.eight American Leaf Chain Standard. LL series chains are created in accordance with the ISO 606 worldwide leaf chain standard.
A chain with an even variety of pitches usually features a a single male and a single female finish. It is a lot more widespread to possess the chain possess an odd variety of pitches in which case the each ends might be either male (most common) or female (significantly less com-mon). When ordering lengths with an odd amount of pitches male ends are provided unless of course otherwise noted. Clevis pins, generally with cotters at every end, are used to connect male chain ends to female clevis blocks. Chains with female ends are often (but not usually) linked to the clevis block with a cottered sort connecting link. The connecting link is the female finish component in this instance.
Leaf Chain Variety
Make use of the following formula to verify the collection of leaf chain:
Minimum Ultimate Strength > T x DF x SF
T: Calculated Highest Chain Tension
DF: Duty Aspect
SF: Service Factor
Note the greatest allowable chain speed for leaf chains is 100ft per minute.