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Leaf Chains have different applications and are regulated by ANSI. They are intended for tension linkage, forklift masts and for low-speed pulling, and as balancers between head and counterweight in some machine devices. Leaf chains are sometimes even known as Balance Chains.
Features and Construction
Leaf chains are actually steel chains with a simple link plate and pin construction. The chain number refers to the pitch and the lacing of the links. The chains have particular features like for instance high tensile strength per section area, which enables the design of smaller devices. There are B- and A+ kind chains in this series and both the BL6 and AL6 Series have the same pitch as RS60. Finally, these chains cannot be powered using sprockets.
Selection and Handling
Comparably, in roller chains, all of the link plates have higher fatigue resistance due to the compressive stress of press fits, while in leaf chains, just two outer plates are press fit. The tensile strength of leaf chains is high and the utmost acceptable tension is low. While handling leaf chains it is essential to confer with the manufacturer's instruction booklet so as to guarantee the safety factor is outlined and utilize safety guards always. It is a good idea to exercise extreme caution and use extra safety guards in applications where the consequences of chain failure are severe.
Higher tensile strength is a direct correlation to the use of a lot more plates. In view of the fact that the use of a lot more plates does not enhance the maximum permissible tension directly, the number of plates may be restricted. The chains need regular lubrication because the pins link directly on the plates, generating an extremely high bearing pressure. Utilizing a SAE 30 or 40 machine oil is frequently suggested for most applications. If the chain is cycled more than one thousand times daily or if the chain speed is over 30m per minute, it would wear extremely quick, even with continuous lubrication. Therefore, in either of these situations utilizing RS Roller Chains would be more suitable.
The AL-type of chains should only be utilized under certain situations like if wear is not a big concern, when there are no shock loads, the number of cycles does not go beyond one hundred day after day. The BL-type would be better suited under other situations.
If a chain utilizing a lower safety factor is selected then the stress load in components would become higher. If chains are used with corrosive elements, then they could become fatigued and break somewhat easily. Performing regular maintenance is really important if operating under these kinds of conditions.
The type of end link of the chain, whether it is an outer link or inner link, determines the shape of the clevis. Clevis connectors or otherwise called Clevis pins are constructed by manufacturers but usually, the user supplies the clevis. A wrongly made clevis can lessen the working life of the chain. The strands must be finished to length by the producer. Check the ANSI standard or phone the maker.
In the last decade, Skyjack was purchased by the Linamar Corporation, a leading producer of modules, precision machined components and assemblies. Now, Skyjack has production facilities in Canada, Hungary and the United States with extra support offices in Europe and Asia.
Skyjack became the industry leader of aerial lift truck machinery by combining features like quality, serviceability and durability, making their own scissor lifts known all over the word for product efficiency and reliability. Skyjack proudly makes a full line of self-propelled scissor lifts. Their elevated work heights reach nearly 56 feet. The company`s current Boom hoist model series has telescopic booms starting from forty five feet to seventy one feet. Skyjack has plans to further extend their boom hoist product line. The company remains a dominant player in the trade adapting rapidly to the continuously evolving requirements of their customers.
Skyjack`s acquisition of Carelift Equipment was done in August of 2007. Most recently, their purchase of Volvo`s Material Handling Equipment company expands Skyjack`s Telehandler product offering. The resulting Zoom Boom and VR series telehandlers together with the extra manufacturing capacity further guarantees the company`s growth and success.
