Leaf Chains are made for higher load, slow speed stress linkage applications. Normally they are really specifi ed for reciprocating movement lifting devices such as fork lifts or cranes. These chains are generally provided to a specifi c length and are linked to a clevis block at each and every finish. The clevis may perhaps accommodate male ends (within or from time to time known as “articulating” backlinks) or female ends (outside or the back links over the pin link) as expected (see illustration under)
Leaf chains are available in three series; AL (light duty), BL (hefty duty), or LL (European conventional). For new selections we advise the BL series in preference to the AL series as the latter continues to be discontinued being a recognized ASME/ANSI conventional series chain. BL series chains are made in accordance with all the ASME/ANSI B29.8 American Leaf Chain Typical. LL series chains are generated in accordance together with the ISO 606 international leaf chain conventional.
A chain with an even quantity of pitches always has a 1 male and one female end. It can be more typical to have the chain possess an odd quantity of pitches through which situation the each ends will likely be either male (most common) or female (much less com-mon). When ordering lengths with an odd variety of pitches male ends are supplied unless otherwise mentioned. Clevis pins, ordinarily with cotters at just about every end, are applied to connect male chain ends to female clevis blocks. Chains with female ends are sometimes (but not always) connected to your clevis block which has a cottered kind connecting website link. The connecting link is definitely the female end part in this case.
Leaf Chain Choice
Use the following formula to confirm the choice of leaf chain:
Minimum Greatest Strength > T x DF x SF
T: Calculated Optimum Chain Tension
DF: Duty Factor
SF: Support Component
Note that the optimum allowable chain velocity for leaf chains is 100ft per minute.