Leaf Chains are manufactured for high load, slow velocity stress linkage applications. Typically they can be specifi ed for reciprocating motion lifting gadgets such as fork lifts or cranes. These chains are typically supplied to a specifi c length and are connected to a clevis block at just about every end. The clevis may well accommodate male ends (within or often called “articulating” back links) or female ends (outside or the hyperlinks within the pin link) as essential (see illustration under)
Leaf chains can be found in three series; AL (light duty), BL (heavy duty), or LL (European common). For new choices we advocate the BL series in preference to the AL series because the latter has been discontinued as a acknowledged ASME/ANSI typical series chain. BL series chains are made in accordance with the ASME/ANSI B29.8 American Leaf Chain Standard. LL series chains are produced in accordance with the ISO 606 global leaf chain typical.
A chain with an even amount of pitches often includes a a single male and one particular female end. It is extra frequent to get the chain possess an odd variety of pitches by which case the the two ends will likely be either male (most common) or female (less com-mon). When ordering lengths with an odd quantity of pitches male ends are supplied unless otherwise mentioned. Clevis pins, normally with cotters at each finish, are applied to connect male chain ends to female clevis blocks. Chains with female ends are often (but not generally) connected on the clevis block which has a cottered sort connecting link. The connecting link is definitely the female end component in this instance.
Leaf Chain Selection
Make use of the following formula to confirm the collection of leaf chain:
Minimal Greatest Strength > T x DF x SF
T: Calculated Highest Chain Stress
DF: Duty Component
SF: Service Component
Note that the greatest allowable chain speed for leaf chains is 100ft per minute.