Leaf Chain – General Details and Variety

Leaf Chains are made for higher load, slow pace stress linkage applications. Usually they are really specifi ed for reciprocating motion lifting devices this kind of 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 may perhaps accommodate male ends (inside or often referred to as “articulating” links) or female ends (outdoors or the links about the pin link) as essential (see illustration below)
Leaf chains are available in 3 series; AL (light duty), BL (heavy duty), or LL (European common). For new selections we propose the BL series in preference on the AL series as the latter is discontinued as a acknowledged ASME/ANSI conventional series chain. BL series chains are produced in accordance using the ASME/ANSI B29.eight American Leaf Chain Standard. LL series chains are generated in accordance with the ISO 606 worldwide leaf chain normal.
A chain with an even amount of pitches always features a one male and one female end. It is additional popular to get the chain possess an odd amount of pitches through which case the each ends is going to be either male (most common) or female (much less com-mon). When ordering lengths with an odd amount of pitches male ends are provided except if otherwise mentioned. Clevis pins, generally with cotters at each and every end, are used to connect male chain ends to female clevis blocks. Chains with female ends are frequently (but not generally) connected on the clevis block that has a cottered type connecting website link. The connecting hyperlink is definitely the female end element in this instance.
Leaf Chain Selection
Make use of the following formula to confirm the choice of leaf chain:
Minimal Ultimate Power > T x DF x SF
T: Calculated Maximum Chain Stress
DF: Duty Component
SF: Support Factor
Note the maximum allowable chain velocity for leaf chains is 100ft per minute.