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Utilized in different functions, leaf chains are regulated by ANSI. They can be used for lift truck masts, as balancers between heads and counterweight in several machine devices, and for low-speed pulling and tension linkage. Leaf chains are occasionally also called Balance Chains.
Features and Construction
Constructed of a simple link plate and pin construction, steel leaf chains is identified by a number that refers to the lacing of the links and the pitch. The chains have specific features like for instance high tensile strength for every section area, that enables the design of smaller mechanisms. There are A- and B- type chains in this series and both the AL6 and BL6 Series have the same pitch as RS60. Lastly, these chains cannot be driven using sprockets.
Selection and Handling
Comparably, in roller chains, all of the link plates have higher fatigue resistance because of the compressive stress of press fits, whereas in leaf chains, only two outer plates are press fit. The tensile strength of leaf chains is high and the utmost acceptable tension is low. Whenever handling leaf chains it is vital to consult the manufacturer's guidebook so as to ensure the safety factor is outlined and utilize safety guards always. It is a better idea to exercise utmost caution and utilize extra safety measures in functions where the consequences of chain failure are serious.
Higher tensile strength is a direct correlation to the utilization of more plates. As the use of a lot more plates does not enhance the utmost permissible tension directly, the number of plates could be restricted. The chains require regular lubrication as the pins link directly on the plates, generating an extremely high bearing pressure. Using a SAE 30 or 40 machine oil is frequently advised for nearly all applications. If the chain is cycled more than 1000 times day after day or if the chain speed is more than 30m for each minute, it would wear very quick, even with continual lubrication. Thus, in either of these situations the use of RS Roller Chains would be more suitable.
The AL-type of chains must only be used under particular situations like for instance if wear is not a huge concern, if there are no shock loads, the number of cycles does not exceed one hundred daily. The BL-type would be better suited under different conditions.
The stress load in parts would become higher if a chain using a lower safety factor is chosen. If the chain is also utilized amongst corrosive conditions, it can easily fatigue and break really quick. Doing frequent maintenance is important when operating under these kinds of conditions.
The outer link or inner link kind of end link on the chain would determine the shape of the clevis. Clevis connectors or likewise known as Clevis pins are constructed by manufacturers, but the user usually provides the clevis. An improperly made clevis can lessen the working life of the chain. The strands should be finished to length by the maker. Refer to the ANSI standard or get in touch with the manufacturer.
In the past ten years, Skyjack was bought by the Linamar Corporation, a leading producer of assemblies, modules and precision machined components. Now, Skyjack has manufacturing facilities in Canada, Hungary and the US with additional support offices in Europe and Asia.
The Skyjack trademark became a leader in the industry for aerial lift equipment by combining features such as durability, quality and serviceability, making their scissor platform lifts know all around the globe for product reliability and efficiency. Skyjack manufactures lots of various self propelled aerial hoists for its international customer base. Their elevated work heights reach nearly 56 feet. The company`s existing Boom lift model series has telescopic booms ranging from 45 feet to 71 feet. Skyjack has plans to further extend their boom hoist product line. The company is still a leading player in the trade adapting rapidly to the continuously changing requirements of all of their customers.
Skyjack`s acquisition of Carelift Equipment was completed in August of 2007. Most recently, their purchase of Volvo`s Material Handling Equipment company expands Skyjack`s Telehandler product offering. The resulting VR series telehandlers and Zoom Boom along with the additional production capability further ensures the company`s growth and success.
