Leaf Chain – Standard Details and Choice

Leaf Chains are manufactured for substantial load, slow pace stress linkage applications. Generally they can be specifi ed for reciprocating movement lifting devices this kind of as fork lifts or cranes. These chains are commonly supplied to a specifi c length and are linked to a clevis block at each end. The clevis may well accommodate male ends (inside or from time to time referred to as “articulating” hyperlinks) or female ends (outdoors or even the backlinks about the pin website link) as demanded (see illustration below)
Leaf chains can be found in three series; AL (light duty), BL (heavy duty), or LL (European regular). For new selections we advocate the BL series in preference to your AL series as the latter continues to be discontinued as being a acknowledged ASME/ANSI common series chain. BL series chains are produced in accordance using the ASME/ANSI B29.eight American Leaf Chain Standard. LL series chains are made in accordance using the ISO 606 international leaf chain typical.
A chain with an even amount of pitches always includes a one male and one particular female finish. It can be a lot more widespread to possess the chain possess an odd amount of pitches through which case the the two ends will likely be both male (most typical) or female (less com-mon). When ordering lengths with an odd amount of pitches male ends are provided unless otherwise mentioned. Clevis pins, ordinarily with cotters at each end, are applied to connect male chain ends to female clevis blocks. Chains with female ends are often (but not generally) linked to the clevis block by using a cottered sort connecting link. The connecting hyperlink is definitely the female finish part in this case.
Leaf Chain Assortment
Use the following formula to confirm the choice of leaf chain:
Minimum Greatest Strength > T x DF x SF
T: Calculated Highest Chain Tension
DF: Duty Aspect
SF: Services Component
Note that the highest allowable chain speed for leaf chains is 100ft per minute.