Leaf Chains are manufactured for high load, slow velocity tension linkage applications. Frequently they can be specifi ed for reciprocating movement lifting devices such as fork lifts or cranes. These chains are normally supplied to a specifi c length and therefore are connected to a clevis block at each and every finish. The clevis might accommodate male ends (inside or in some cases named “articulating” backlinks) or female ends (outdoors or even the back links about the pin hyperlink) as essential (see illustration below)
Leaf chains are available in three series; AL (light duty), BL (hefty duty), or LL (European typical). For new choices we advocate the BL series in preference to the AL series because the latter has been discontinued being a acknowledged ASME/ANSI common series chain. BL series chains are produced in accordance with all the ASME/ANSI B29.eight American Leaf Chain Conventional. LL series chains are produced in accordance with all the ISO 606 global leaf chain common.
A chain with an even quantity of pitches generally has a one male and one particular female end. It can be a lot more widespread to have the chain possess an odd variety of pitches through which situation the the two ends are going to be either male (most typical) or female (less com-mon). When ordering lengths with an Leaf%20Chainodd number of pitches male ends are supplied unless otherwise mentioned. Clevis pins, ordinarily with cotters at every end, are utilized to connect male chain ends to female clevis blocks. Chains with female ends are frequently (but not constantly) connected to the clevis block that has a cottered kind connecting link. The connecting hyperlink will be the female finish component in this case.
Leaf Chain Selection
Use the following formula to confirm the collection of leaf chain:
Minimal Ultimate Power > T x DF x SF
T: Calculated Highest Chain Stress
DF: Duty Factor
SF: Service Component
Note that the highest allowable chain pace for leaf chains is 100ft per minute.