Leaf Chains are made for high load, slow pace tension linkage applications. Often they may be specifi ed for reciprocating movement lifting products such as fork lifts or cranes. These chains are generally provided to a specifi c length and are linked to a clevis block at every finish. The clevis may accommodate male ends (within or sometimes referred to as “articulating” links) or female ends (outdoors or the backlinks within the pin hyperlink) as expected (see illustration beneath)
Leaf chains can be found in three series; AL (light duty), BL (heavy duty), or LL (European common). For new choices we propose the BL series in preference towards the AL series as the latter is discontinued being a recognized ASME/ANSI common series chain. BL series chains are generated in accordance with the ASME/ANSI B29.eight American Leaf Chain Normal. LL series chains are created in accordance using the ISO 606 worldwide leaf chain normal.
A chain with an even number of pitches usually features a a single male and 1 female end. It truly is a lot more frequent to have the chain possess an odd variety of pitches by which situation the the two ends will likely be either male (most typical) or female (much less com-mon). When ordering lengths with an odd quantity of pitches male ends are provided except if otherwise noted. Clevis pins, typically with cotters at each end, are applied to connect male chain ends to female clevis blocks. Chains with female ends are sometimes (but not always) linked to the clevis block by using a cottered type connecting hyperlink. The connecting website link may be the female end component in this instance.
Leaf Chain Variety
Use the following formula to confirm the variety of leaf chain:
Minimum Greatest Strength > T x DF x SF
T: Calculated Optimum Chain Stress
DF: Duty Component
SF: Support Factor
Note the maximum allowable chain velocity for leaf chains is 100ft per minute.