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Leaf chains are actually steel chains utilizing a simple pin construction and link plate. The chain number refers to the pitch and the lacing of the links. The chains have certain features like high tensile strength for every section area, which enables the design of smaller mechanisms. There are A- and B- type chains in this particular series and both the BL6 and AL6 Series include the same pitch as RS60. Finally, these chains cannot be driven utilizing sprockets.
In roller chains, the link plates have a higher fatigue resistance due to the compressive tension of press fits, yet the leaf chain just has two outer press fit plates. On the leaf chain, the maximum allowable tension is low and the tensile strength is high. Whenever handling leaf chains it is vital to confer with the manufacturer's manual to be able to guarantee the safety factor is outlined and utilize safety measures all the time. It is a good idea to carry out utmost care and utilize extra safety measures in functions where the consequences of chain failure are serious.
Utilizing a lot more plates in the lacing leads to the higher tensile strength. Since this does not improve the most permissible tension directly, the number of plates utilized can be restricted. The chains require regular lubrication because the pins link directly on the plates, generating an extremely high bearing pressure. Using a SAE 30 or 40 machine oil is often advised for the majority of applications. If the chain is cycled more than one thousand times in a day or if the chain speed is more than 30m per minute, it will wear very fast, even with continuous lubrication. Thus, in either of these situations the use of RS Roller Chains would be much more suitable.
AL type chains are just to be utilized under particular situations like for instance where there are no shock loads or when wear is not really a huge concern. Be certain that the number of cycles does not go over one hundred every day. The BL-type will be better suited under various conditions.
If a chain utilizing a lower safety factor is chosen then the stress load in parts will become higher. If chains are used with corrosive elements, then they could become fatigued and break quite easily. Doing regular maintenance is important when operating under these kinds of situations.