Leaf Chains are made for high load, slow velocity tension linkage applications. Often they may be specifi ed for reciprocating motion lifting gadgets such as fork lifts or cranes. These chains are commonly supplied to a specifi c length and therefore are linked to a clevis block at every end. The clevis may well accommodate male ends (inside or at times named “articulating” backlinks) or female ends (outside or even the back links over the pin hyperlink) as expected (see illustration under)
Leaf chains are available in 3 series; AL (light duty), BL (heavy duty), or LL (European conventional). For new selections we propose the BL series in preference towards the AL series because the latter continues to be discontinued like a recognized ASME/ANSI typical series chain. BL series chains are made in accordance with all the ASME/ANSI B29.eight American Leaf Chain Typical. LL series chains are generated in accordance using the ISO 606 worldwide leaf chain typical.
A chain with an even amount of pitches normally features a 1 male and one particular female finish. It truly is far more common to have the chain possess an odd amount of pitches during which case the each ends will likely be both male (most common) or female (much less com-mon). When ordering lengths with an odd variety of pitches male ends are provided unless of course otherwise noted. Clevis pins, commonly with cotters at each and every finish, are employed to connect male chain ends to female clevis blocks. Chains with female ends are sometimes (but not often) connected to your clevis block by using a cottered sort connecting website link. The connecting hyperlink may be the female finish part in this instance.
Leaf Chain Variety
Use the following formula to verify the variety of leaf chain:
Minimal Ultimate Power > T x DF x SF
T: Calculated Maximum Chain Stress
DF: Duty Aspect
SF: Services Issue
Note the highest allowable chain pace for leaf chains is 100ft per minute.