Leaf Chains are created for higher load, slow speed tension linkage applications. Frequently they’re specifi ed for reciprocating motion lifting products this kind of as fork lifts or cranes. These chains are typically provided to a specifi c length and therefore are linked to a clevis block at each end. The clevis might accommodate male ends (inside or often termed “articulating” back links) or female ends (outside or the links about the pin link) as needed (see illustration beneath)
Leaf chains are available in three series; AL (light duty), BL (heavy duty), or LL (European typical). For new choices we advise the BL series in preference for the AL series since the latter continues to be discontinued like a recognized ASME/ANSI typical series chain. BL series chains are produced in accordance with all the ASME/ANSI B29.8 American Leaf Chain Regular. LL series chains are produced in accordance with all the ISO 606 international leaf chain common.
A chain with an even quantity of pitches constantly includes a a single male and one particular female end. It really is far more widespread to get the chain possess an odd number of pitches in which situation the the two ends will likely be either male (most typical) or female (less com-mon). When ordering lengths with an odd amount of pitches male ends are supplied unless otherwise noted. Clevis pins, generally with cotters at each and every end, are utilized to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not generally) connected towards the clevis block by using a cottered kind connecting hyperlink. The connecting link could be the female end part in this instance.
Leaf Chain Choice
Use the following formula to confirm the choice of leaf chain:
Minimum Greatest Power > T x DF x SF
T: Calculated Optimum Chain Tension
DF: Duty Factor
SF: Service Issue
Note the maximum allowable chain pace for leaf chains is 100ft per minute.