Leaf Chains are produced for substantial load, slow speed tension linkage applications. Frequently they can be specifi ed for reciprocating movement lifting products such as fork lifts or cranes. These chains are normally provided to a specifi c length and therefore are linked to a clevis block at each end. The clevis may perhaps accommodate male ends (inside or often referred to as “articulating” hyperlinks) or female ends (outdoors or the links on the pin link) as demanded (see illustration under)
Leaf chains can be found in three series; AL (light duty), BL (hefty duty), or LL (European typical). For new choices we recommend the BL series in preference to the AL series since the latter continues to be discontinued like a acknowledged ASME/ANSI regular series chain. BL series chains are generated in accordance together with the ASME/ANSI B29.8 American Leaf Chain Conventional. LL series chains are generated in accordance using the ISO 606 worldwide leaf chain conventional.
A chain with an even number of pitches normally features a one male and a single female finish. It is additional common to get the chain possess an odd amount of pitches by which situation the both ends are going to be either male (most common) or female (significantly less com-mon). When ordering lengths with an odd number of pitches male ends are provided unless of course otherwise noted. Clevis pins, normally with cotters at just about every end, are utilised to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not constantly) connected to your clevis block using a cottered variety connecting link. The connecting hyperlink would be the female finish element in this case.
Leaf Chain Choice
Make use of the following formula to verify the choice of leaf chain:
Minimal Ultimate Strength > T x DF x SF
T: Calculated Greatest Chain Tension
DF: Duty Component
SF: Service Aspect
Note that the optimum allowable chain velocity for leaf chains is 100ft per minute.