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Leaf Chains comprise different functions and are regulated by ANSI. They are designed for low-speed pulling, for tension linkage and lift truck masts, and as balancers between head and counterweight in several machine gadgets. Leaf chains are sometimes 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 certain features such as high tensile strength for each section area, that allows the design of smaller machines. There are B- and A+ type chains in this particular series and both the BL6 and AL6 Series include the same pitch as RS60. Lastly, these chains cannot be driven 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 just contains two outer press fit plates. On the leaf chain, the most allowable tension is low and the tensile strength is high. Whenever handling leaf chains it is vital to confer with the manufacturer's instruction booklet so as to ensure the safety factor is outlined and utilize safety measures at all times. It is a good idea to exercise utmost caution and utilize extra safety measures in functions wherein the consequences of chain failure are serious.
Higher tensile strength is a direct correlation to the use of more plates. Since the utilization of more plates does not improve the most allowable tension directly, the number of plates may be limited. The chains require regular lubrication as the pins link directly on the plates, producing a very high bearing pressure. Utilizing a SAE 30 or 40 machine oil is frequently suggested for the majority of applications. If the chain is cycled over one thousand times in a day or if the chain speed is more than 30m for every minute, it will wear very fast, even with constant lubrication. Thus, in either of these conditions the use of RS Roller Chains will be more suitable.
The AL-type of chains should only be used under particular conditions like for instance if wear is really not a big problem, when there are no shock loads, the number of cycles does not go over a hundred day by day. The BL-type will be better suited under different situations.
The stress load in components will become higher if a chain utilizing a lower safety factor is chosen. If the chain is also used among corrosive conditions, it can easily fatigue and break really fast. Doing regular maintenance is really vital if operating under these types 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 otherwise called Clevis pins are constructed by manufacturers but normally, the user supplies the clevis. An improperly made clevis could decrease the working life of the chain. The strands should be finished to length by the producer. Check the ANSI standard or phone the producer.
In the past decade, Skyjack was purchased by the Linamar Corporation, a leading producer of precision machined components, assemblies and modules. Today, Skyjack has production plants in Hungary, the US and Canada with added support offices in Asia and Europe.
The Skyjack trademark became the industry leader for aerial lift truck equipment by combining features like serviceability, durability and quality, making their scissor platform lifts know all over the globe for product reliability and efficiency. Skyjack makes a lot of other self-propelled aerial lifts for its international client base. Their elevated work heights reach about fifty six feet. The company`s current Boom hoist model series has telescopic booms ranging from 45 feet to 71 feet. Skyjack has plans to further extend their boom lift product line. The business is still a dominant player in the trade adjusting rapidly to the continually changing requirements of all their clients.
Of late, Skyjack bought Carelift Equipment in August 2007 and Volvo's Material Handling Equipment to be able to try to expand their Telehandling product offering. The resulting Zoom Boom and VR series telehandlers together with the additional manufacturing capability further ensures the company`s success and growth.
