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Utilized in different applications, leaf chains are regulated by ANSI. They could be used for lift truck masts, as balancers between counterweight and heads in several machine tools, and for tension linkage and low-speed pulling. Leaf chains are at times even referred to as Balance Chains.
Construction and Features
Leaf chains are actually steel chains with a simple pin construction and link plate. The chain number refers to the lacing of the links and the pitch. The chains have specific features such as high tensile strength for every section area, which enables the design of smaller mechanisms. There are B- and A+ type chains in this series and both the AL6 and BL6 Series include the same pitch as RS60. Finally, these chains cannot be powered with sprockets.
Handling and Selection
Comparably, in roller chains, all of the link plates maintain 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 maximum allowable tension is low. Whenever handling leaf chains it is important to consult the manufacturer's catalogue in order to guarantee the safety factor is outlined and use safety guards always. It is a better idea to exercise utmost caution and utilize extra safety measures in applications where the consequences of chain failure are serious.
Higher tensile strength is a direct correlation to the use of much more plates. In view of the fact that the utilization of a lot more plates does not improve the most allowable tension directly, the number of plates can be limited. The chains need regular lubrication as the pins link directly on the plates, producing a very high bearing pressure. Making use of a SAE 30 or 40 machine oil is frequently advised for most applications. If the chain is cycled more than 1000 times day by day or if the chain speed is more than 30m for every minute, it will wear extremely rapidly, even with constant lubrication. Thus, in either of these conditions the use of RS Roller Chains would be much more suitable.
The AL-type of chains must just be used under particular conditions such as if wear is not a big issue, when there are no shock loads, the number of cycles does not go over one hundred daily. The BL-type will be better suited under different conditions.
The stress load in parts will become higher if a chain using a lower safety factor is selected. If the chain is also utilized among corrosive situations, it can easily fatigue and break extremely quick. Doing frequent maintenance is vital 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 otherwise known as Clevis pins are made by manufacturers, but the user normally provides the clevis. An improperly constructed clevis can lessen the working life of the chain. The strands must be finished to length by the producer. Refer to the ANSI standard or phone the manufacturer.
In the new millennium, Skyjack was acquired by the Linamar Corporation, who is LNR on the TSX, a leading producer of precision-machined components, modules and assemblies. At present, Skyjack has manufacturing facilities in Hungary, the US and Canada with added support offices in Europe and Asia.
The Skyjack brand name became the industry leader for aerial lift truck machines by combining features like serviceability, durability and quality, making their scissor lifts know around the globe for product efficiency and reliability. Skyjack manufactures a lot of various self-propelled aerial platform lifts for its global client base. Their elevated work heights reach up to fifty six feet. The company`s current Boom lift truck model series has telescopic booms starting from 45 feet to 71 feet. Skyjack has plans to further develop their boom hoist product line. The business remains a leading player in the industry adapting fast to the always evolving needs of their customers.
Skyjack`s purchase 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 VR series telehandlers and Zoom Boom along with the extra manufacturing capability further guarantees the company`s success and growth.
