Leaf Chains are created for large load, slow speed stress linkage applications. Typically they’re specifi ed for reciprocating movement lifting products 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 just about every end. The clevis could accommodate male ends (inside or at times called “articulating” links) or female ends (outdoors or the hyperlinks around the pin hyperlink) as essential (see illustration below)
Leaf chains are available in 3 series; AL (light duty), BL (heavy duty), or LL (European conventional). For new selections we suggest the BL series in preference for the AL series since the latter has become discontinued as a recognized ASME/ANSI regular series chain. BL series chains are generated in accordance with the ASME/ANSI B29.8 American Leaf Chain Conventional. LL series chains are created in accordance with the ISO 606 global leaf chain common.
A chain with an even variety of pitches generally includes a one particular male and 1 female end. It really is more typical to have the chain possess an odd variety of pitches during which situation the each ends will be either male (most common) or female (significantly less com-mon). When ordering lengths with an odd variety of pitches male ends are provided unless otherwise mentioned. Clevis pins, normally with cotters at just about every end, are utilised to connect male chain ends to female clevis blocks. Chains with female ends are sometimes (but not constantly) connected on the clevis block having a cottered kind connecting website link. The connecting hyperlink could be the female end element in this case.
Leaf Chain Variety
Utilize the following formula to confirm the variety of leaf chain:
Minimal Ultimate Power > T x DF x SF
T: Calculated Maximum Chain Tension
DF: Duty Factor
SF: Service Element
Note the optimum allowable chain speed for leaf chains is 100ft per minute.