Leaf Chain – Basic Facts and Selection

Leaf Chains are manufactured for higher load, slow pace stress linkage applications. Usually these are specifi ed for reciprocating movement lifting gadgets such as fork lifts or cranes. These chains are usually supplied to a specifi c length and are connected to a clevis block at each finish. The clevis may accommodate male ends (within or in some cases identified as “articulating” links) or female ends (outside or the links about the pin website link) as expected (see illustration beneath)
Leaf chains are available in three series; AL (light duty), BL (hefty duty), or LL (European standard). For new selections we advise the BL series in preference on the AL series as the latter continues to be discontinued as a acknowledged ASME/ANSI regular series chain. BL series chains are developed in accordance with all the ASME/ANSI B29.8 American Leaf Chain Conventional. LL series chains are created in accordance together with the ISO 606 international leaf chain common.
A chain with an even number of pitches usually has a 1 male and 1 female finish. It’s additional widespread to possess the chain possess an odd amount of pitches in which case the the two ends is going to be both male (most common) or female (less com-mon). When ordering lengths with an odd variety of pitches male ends are provided unless otherwise mentioned. Clevis pins, commonly with cotters at just about every finish, are employed to connect male chain ends to female clevis blocks. Chains with female ends are frequently (but not constantly) linked on the clevis block with a cottered kind connecting link. The connecting website link is the female end element in this instance.
Leaf Chain Variety
Make use of the following formula to confirm the selection of leaf chain:
Minimum Greatest Strength > T x DF x SF
T: Calculated Optimum Chain Stress
DF: Duty Aspect
SF: Services Issue
Note the optimum allowable chain pace for leaf chains is 100ft per minute.