Leaf Chains are manufactured for higher load, slow speed stress linkage applications. Normally they’re specifi ed for reciprocating motion lifting units such as fork lifts or cranes. These chains are generally provided to a specifi c length and therefore are linked to a clevis block at just about every end. The clevis may possibly accommodate male ends (within or from time to time termed “articulating” back links) or female ends (outside or even the links within the pin website link) as expected (see illustration beneath)
Leaf chains are available in three series; AL (light duty), BL (heavy duty), or LL (European regular). For new selections we recommend the BL series in preference to your AL series as the latter is discontinued being a acknowledged ASME/ANSI regular series chain. BL series chains are created in accordance using the ASME/ANSI B29.8 American Leaf Chain Common. LL series chains are generated in accordance together with the ISO 606 worldwide leaf chain standard.
A chain with an even number of pitches constantly has a one male and 1 female finish. It is a lot more common to get the chain possess an odd quantity of pitches through which situation the both ends are going to be either male (most common) or female (less com-mon). When ordering lengths with an odd variety of pitches male ends are supplied unless otherwise noted. Clevis pins, normally 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 generally) linked to your clevis block with a cottered sort connecting website link. The connecting hyperlink could be the female end component in this instance.
Leaf Chain Variety
Make use of the following formula to confirm the variety of leaf chain:
Minimum Greatest Strength > T x DF x SF
T: Calculated Highest Chain Stress
DF: Duty Element
SF: Support Factor
Note that the optimum allowable chain velocity for leaf chains is 100ft per minute.