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Utilized in different applications, leaf chains are regulated by ANSI. They could be utilized for forklift masts, as balancers between counterweight and heads in several machine tools, and for tension linkage and low-speed pulling. Leaf chains are at times also called Balance Chains.
Construction and Features
Leaf chains are steel chains with a simple pin construction and link plate. The chain number refers to the pitch and the lacing of the links. The chains have particular features such as high tensile strength for each section area, which enables the design of smaller machines. There are B- and A+ type chains in this particular series and both the AL6 and BL6 Series contain the same pitch as RS60. Lastly, these chains cannot be driven with sprockets.
Handling and Selection
In roller chains, the link plates maintain 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 permissible tension is low and the tensile strength is high. When handling leaf chains it is important to confer with the manufacturer's manual so as to guarantee the safety factor is outlined and use safety measures all the time. It is a better idea to exercise extreme caution and utilize extra safety measures in functions where the consequences of chain failure are severe.
Higher tensile strength is a direct correlation to the utilization of a lot more plates. As the use of more plates does not improve the maximum permissible tension directly, the number of plates can be restricted. The chains need frequent lubrication in view of the fact that the pins link directly on the plates, producing a very high bearing pressure. Utilizing a SAE 30 or 40 machine oil is often advised for nearly all applications. If the chain is cycled over one thousand times each day or if the chain speed is over 30m for every minute, it will wear really quick, even with continuous lubrication. Thus, in either of these conditions the use of RS Roller Chains will be a lot more suitable.
The AL-type of chains must only be utilized under particular conditions like for instance when wear is not a big issue, when there are no shock loads, the number of cycles does not go over one hundred every day. The BL-type would be better suited under other situations.
The stress load in parts will become higher if a chain with a lower safety factor is chosen. If the chain is likewise used amongst corrosive conditions, it could easily fatigue and break very fast. Performing frequent maintenance is vital if operating under these kinds of situations.
The type of end link of the chain, whether it is an inner link or outer link, determines the shape of the clevis. Clevis connectors or Clevis pins are made by manufacturers but normally, the user supplies the clevis. An improperly made clevis can decrease the working life of the chain. The strands must be finished to length by the maker. Refer to the ANSI standard or contact the maker.
In the new millennium, Skyjack was bought by the Linamar Corporation, who is LNR on the TSX, a leading producer of modules, assemblies and precision-machined components. Now, Skyjack has production facilities in the US, Canada and Hungary with added support offices in Asia and Europe.
Skyjack became the leader in the industry of aerial lift machinery by combining features such as quality, serviceability and durability, making their scissor lifts known worldwide for product reliability and efficiency. Skyjack proudly makes a full line of self-propelled scissor lifts. Their elevated work heights reach nearly 56 feet. The company`s present Boom hoist model series has telescopic booms starting from 45 feet to 71 feet. Skyjack has plans to further extend their boom hoist product line. The company remains a leading player in the industry adjusting rapidly to the continually evolving requirements of all their clients.
Skyjack`s purchase of Carelift Equipment was finished in August of the year 2007. Most recently, their acquisition of Volvo`s Material Handling Equipment business expands Skyjack`s Telehandler product offering. The resulting VR series telehandlers and Zoom Boom together with the additional production capacity further ensures the company`s success and growth.
