Leaf Chains are made for higher load, slow speed stress linkage applications. Usually these are specifi ed for reciprocating motion lifting units this kind of as fork lifts or cranes. These chains are commonly provided to a specifi c length and are linked to a clevis block at every single finish. The clevis may perhaps accommodate male ends (inside or occasionally identified as “articulating” back links) or female ends (outside or even the back links on the pin website link) as essential (see illustration beneath)
Leaf chains are available in three series; AL (light duty), BL (hefty duty), or LL (European regular). For new selections we advocate the BL series in preference to your AL series because the latter continues to be discontinued like a recognized ASME/ANSI normal series chain. BL series chains are created in accordance together with the ASME/ANSI B29.8 American Leaf Chain Conventional. LL series chains are generated in accordance with all the ISO 606 worldwide leaf chain typical.
A chain with an even variety of pitches often features a one particular male and a single female finish. It’s much more prevalent to get the chain possess an odd number of pitches during which case the the two ends will probably be both male (most typical) or female (much less com-mon). When ordering lengths with an odd quantity of pitches male ends are supplied except if otherwise mentioned. Clevis pins, usually with cotters at every single finish, are used to connect male chain ends to female clevis blocks. Chains with female ends are often (but not usually) linked for the clevis block with a cottered type connecting link. The connecting website link will be the female finish component in this instance.
Leaf Chain Assortment
Use the following formula to verify the selection of leaf chain:
Minimal Greatest Power > T x DF x SF
T: Calculated Highest Chain Stress
DF: Duty Element
SF: Services Element
Note that the highest allowable chain pace for leaf chains is 100ft per minute.