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Leaf Chains have various functions and are regulated by ANSI. They are used for tension linkage, forklift masts and for low-speed pulling, and as balancers between head and counterweight in certain machine gadgets. Leaf chains are sometimes even known as Balance Chains.
Features and Construction
Leaf chains are steel chains utilizing a simple link plate and pin construction. The chain number refers to the lacing of the links and the pitch. The chains have specific features such as high tensile strength per section area, which enables the design of smaller devices. There are A- and B- type chains in this particular series and both the BL6 and AL6 Series comprise the same pitch as RS60. Finally, these chains cannot be powered with sprockets.
Selection and Handling
In roller chains, the link plates have a higher fatigue resistance because of the compressive stress of press fits, yet the leaf chain only has two outer press fit plates. On the leaf chain, the maximum acceptable tension is low and the tensile strength is high. While handling leaf chains it is vital to consult the manufacturer's handbook in order to guarantee the safety factor is outlined and utilize safety measures at all times. It is a good idea to apply extreme care and utilize extra safety guards in functions where the consequences of chain failure are severe.
Using a lot more plates in the lacing causes the higher tensile strength. In view of the fact that this does not improve the utmost allowable tension directly, the number of plates used could be limited. The chains need regular lubrication as the pins link directly on the plates, producing an extremely high bearing pressure. Using a SAE 30 or 40 machine oil is frequently advised for nearly all applications. If the chain is cycled more than one thousand times in a day or if the chain speed is over 30m for each minute, it would wear very rapidly, even with continuous lubrication. Thus, in either of these conditions the use of RS Roller Chains would be a lot more suitable.
The AL-type of chains should just be utilized under certain conditions like for example when wear is not a big concern, if there are no shock loads, the number of cycles does not exceed 100 each day. The BL-type would be better suited under various conditions.
If a chain with a lower safety factor is selected then the stress load in components will become higher. If chains are utilized with corrosive elements, then they can become fatigued and break somewhat easily. Performing regular maintenance is really essential when operating under these kinds of conditions.
The inner link or outer link type of end link on the chain would determine the shape of the clevis. Clevis connectors or likewise known as Clevis pins are made by manufacturers, but the user usually supplies the clevis. A wrongly constructed clevis can decrease the working life of the chain. The strands must be finished to length by the manufacturer. Check the ANSI standard or phone the maker.
In the past 10 years, Skyjack was bought by the Linamar Corporation, a leading producer of precision machined components, assemblies and modules. At present, Skyjack has production plants in Hungary, the United States and Canada with extra support offices in Europe and Asia.
The Skyjack trade name became the industry leader for aerial lift truck machinery by combining features like for instance durability, quality and serviceability, making their very own scissor lifts know all over the world for product efficiency and reliability. Skyjack produces lots of other self propelled aerial platform lifts for its global client base. Their elevated work heights reach nearly fifty six feet. The company`s existing Boom lift truck model series has telescopic booms ranging from forty five feet to seventy one feet. Skyjack has plans to further expand their boom hoist product line. The business is still a dominant player in the industry adapting fast to the always changing requirements of all their clients.
Skyjack`s acquisition of Carelift Equipment was done in August of the year 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 extra manufacturing capacity further guarantees the company`s growth and success.