Leaf Chains are created for substantial load, slow speed stress linkage applications. Typically they are really specifi ed for reciprocating movement lifting products this kind of as fork lifts or cranes. These chains are typically provided to a specifi c length and are connected to a clevis block at just about every finish. The clevis may accommodate male ends (within or from time to time termed “articulating” links) or female ends (outdoors or even the backlinks 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 common). For new choices we recommend the BL series in preference to your AL series since the latter is discontinued as a acknowledged ASME/ANSI normal series chain. BL series chains are produced in accordance using the ASME/ANSI B29.8 American Leaf Chain Normal. LL series chains are made in accordance together with the ISO 606 global leaf chain regular.
A chain with an even quantity of pitches constantly includes a a single male and one female end. It is much more widespread to get the chain possess an odd variety of pitches in which case the both ends will be either male (most typical) or female (significantly less com-mon). When ordering lengths with an odd amount of pitches male ends are supplied except if otherwise mentioned. Clevis pins, usually with cotters at each end, are made use of to connect male chain ends to female clevis blocks. Chains with female ends tend to be (but not always) linked towards the clevis block having a cottered style connecting hyperlink. The connecting link is the female end element in this case.
Leaf Chain Selection
Utilize the following formula to confirm the selection of leaf chain:
Minimal Greatest Strength > T x DF x SF
T: Calculated Greatest Chain Tension
DF: Duty Component
SF: Support Aspect
Note that the maximum allowable chain velocity for leaf chains is 100ft per minute.