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Leaf Chains consist of different functions and are regulated by ANSI. They are intended for forklift masts, for low-speed pulling and tension linkage, and as balancers between counterweight and head in certain machine tools. Leaf chains are sometimes even called Balance Chains.
Features and Construction
Leaf chains are actually steel chains utilizing a simple pin construction and link plate. The chain number refers to the lacing of the links and the pitch. The chains have certain features like high tensile strength for every section area, which enables the design of smaller mechanisms. There are B- and A+ kind chains in this series and both the BL6 and AL6 Series contain the same pitch as RS60. Finally, these chains cannot be powered utilizing sprockets.
Selection and Handling
In roller chains, the link plates have a higher fatigue resistance because of the compressive tension of press fits, yet the leaf chain only contains two outer press fit plates. On the leaf chain, the most permissible tension is low and the tensile strength is high. When handling leaf chains it is important to confer with the manufacturer's instruction manual to be able to ensure the safety factor is outlined and use safety guards at all times. It is a better idea to exercise utmost caution and use extra safety guards in functions wherein the consequences of chain failure are severe.
Utilizing a lot more plates in the lacing leads to the higher tensile strength. For the reason that this does not enhance the most allowable tension directly, the number of plates utilized can be limited. The chains need frequent lubrication because the pins link directly on the plates, generating a very high bearing pressure. Making use of a SAE 30 or 40 machine oil is frequently suggested for the majority of applications. If the chain is cycled over 1000 times day after day or if the chain speed is more than 30m per minute, it will wear extremely quick, even with continuous lubrication. Therefore, in either of these situations the use of RS Roller Chains would be more suitable.
AL type chains are just to be used under particular conditions like for instance where there are no shock loads or if wear is not really a big problem. Make positive that the number of cycles does not go over one hundred on a daily basis. The BL-type would be better suited under different situations.
The stress load in parts would become higher if a chain with a lower safety factor is chosen. If the chain is also used among corrosive conditions, it could easily fatigue and break really quick. Doing frequent maintenance is really essential when operating under these types of situations.
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 otherwise called Clevis pins are made by manufacturers but often, the user provides the clevis. A wrongly constructed clevis could lessen the working life of the chain. The strands should be finished to length by the maker. Check the ANSI standard or get in touch with the producer.
In the past ten years, Skyjack was purchased by the Linamar Corporation, a leading maker of assemblies, modules and precision machined components. Today, Skyjack has production facilities in Hungary, the US and Canada with extra support offices in Asia and Europe.
Skyjack became the leader in the industry of aerial hoist machinery by combining features such as quality, serviceability and durability, making their very own scissor lifts recognized worldwide for product reliability and efficiency. Skyjack proudly manufactures a full line of self-propelled scissor platform lifts. Their elevated work heights reach nearly fifty six feet. The company`s current Boom hoist model series has telescopic booms starting from 45 feet to 71 feet. Skyjack has plans to further extend their boom lift product line. The company is still a dominant player in the industry adjusting rapidly to the continuously evolving requirements 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 business expands Skyjack`s Telehandler product offering. The resulting VR series telehandlers and Zoom Boom together with the additional manufacturing capability further ensures the company`s growth and success.
