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Leaf Chains consist of various applications and are regulated by ANSI. They are utilized for low-speed pulling, for tension linkage and forklift masts, and as balancers between counterweight and head in some machine tools. Leaf chains are occasionally likewise called Balance Chains.
Features and Construction
Leaf chains are steel chains using a simple link plate and pin construction. The chain number refers to the pitch and the lacing of the links. The chains have certain features like for instance high tensile strength per section area, that enables the design of smaller mechanisms. There are A- and B- type chains in this particular series and both the BL6 and AL6 Series comprise the same pitch as RS60. Lastly, these chains cannot be powered utilizing sprockets.
Selection and Handling
In roller chains, the link plates maintain a higher fatigue resistance due to the compressive stress of press fits, yet the leaf chain just has two outer press fit plates. On the leaf chain, the most allowable tension is low and the tensile strength is high. While handling leaf chains it is essential to check with the manufacturer's catalogue to be able to ensure the safety factor is outlined and utilize safety guards all the time. It is a good idea to exercise extreme caution and use extra safety guards in applications wherein the consequences of chain failure are severe.
Higher tensile strength is a direct correlation to the use of a lot more plates. As the utilization of a lot more plates does not enhance the maximum permissible tension directly, the number of plates could be limited. The chains require regular lubrication in view of the fact that the pins link directly on the plates, generating a really high bearing pressure. Making use of a SAE 30 or 40 machine oil is frequently advised for most applications. If the chain is cycled over one thousand times in a day or if the chain speed is over 30m for each minute, it would wear very fast, even with continual lubrication. Thus, in either of these conditions using RS Roller Chains would be a lot more suitable.
AL type chains are only to be utilized under particular conditions like for example where there are no shock loads or if wear is not a big problem. Make positive that the number of cycles does not exceed 100 on a daily basis. The BL-type will be better suited under other situations.
The stress load in parts would become higher if a chain utilizing a lower safety factor is chosen. If the chain is also utilized amongst corrosive conditions, it can easily fatigue and break really fast. Doing regular maintenance is important if operating under these kinds of conditions.
The kind of end link of the chain, whether it is an outer link or inner link, determines the shape of the clevis. Clevis connectors or also called Clevis pins are constructed by manufacturers but often, the user provides the clevis. A wrongly made clevis could lessen the working life of the chain. The strands must be finished to length by the manufacturer. Check the ANSI standard or call the maker.
In the new millennium, Skyjack was bought by the Linamar Corporation, who is LNR on the TSX, a primary manufacturer of precision-machined components, modules and assemblies. Now, Skyjack has manufacturing facilities in Hungary, the US and Canada with added support offices in Asia and Europe.
Skyjack became the industry leader of aerial lift truck machinery by combining features like for instance serviceability, durability and quality, making their scissor platform lifts known all over the word for product reliability and efficiency. Skyjack proudly manufactures a full line of self-propelled scissor platform lifts. Their elevated work heights reach nearly 56 feet. The company`s current Boom hoist model series has telescopic booms starting from 45 feet to 71 feet. Skyjack has plans to further develop their boom lift truck product line. The business remains a dominant player in the industry adjusting rapidly to the constantly changing needs of all of their customers.
Skyjack`s purchase of Carelift Equipment was completed in August of the year 2007. Most recently, their acquisition of Volvo`s Material Handling Equipment company expands Skyjack`s Telehandler product offering. The resulting VR series telehandlers and Zoom Boom together with the additional production ability further guarantees the company`s growth and success.
