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Leaf Chains have different functions and are regulated by ANSI. They are designed for tension linkage, forklift masts and for low-speed pulling, and as balancers between head and counterweight in some machine devices. Leaf chains are sometimes even known as Balance Chains.
Construction and Features
Leaf chains are actually steel chains with 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 high tensile strength for each 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 contain the same pitch as RS60. Lastly, these chains cannot be powered with sprockets.
Selection and Handling
In roller chains, the link plates have a higher fatigue resistance due to the compressive stress of press fits, yet the leaf chain just contains two outer press fit plates. On the leaf chain, the maximum allowable tension is low and the tensile strength is high. Whenever handling leaf chains it is important to confer with the manufacturer's instruction manual so as to guarantee the safety factor is outlined and use safety guards all the time. It is a good idea to exercise utmost care and use extra safety measures in applications where the consequences of chain failure are serious.
Higher tensile strength is a direct correlation to the utilization of much more plates. In view of the fact that the use of more plates does not improve the most permissible tension directly, the number of plates may be limited. The chains need frequent lubrication for the reason 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 normally advised for the majority of applications. If the chain is cycled more than 1000 times daily or if the chain speed is over 30m for each minute, it will wear really fast, even with constant 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 just be utilized under particular situations like if wear is not a huge issue, when there are no shock loads, the number of cycles does not exceed 100 daily. The BL-type would be better suited under various situations.
If a chain using a lower safety factor is selected then the stress load in parts will become higher. If chains are utilized with corrosive elements, then they may become fatigued and break rather easily. Doing regular maintenance is really vital when 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 likewise called Clevis pins are constructed by manufacturers but often, 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 manufacturer. Refer to the ANSI standard or get in touch with the manufacturer.
In the past decade, Skyjack was bought by the Linamar Corporation, a leading maker of precision machined components, assemblies and modules. At present, Skyjack has manufacturing plants in Canada, Hungary and the US with added support offices in Asia and Europe.
Skyjack became the leader in the industry of aerial hoist machinery by combining features like quality, serviceability and durability, making their scissor platform lifts known worldwide for product reliability and efficiency. Skyjack proudly manufactures a full line of self-propelled scissor lifts. Their elevated work heights reach nearly fifty six feet. The company`s existing Boom lift truck model series has telescopic booms ranging from 45 feet to 71 feet. Skyjack has plans to further expand their boom lift truck product line. The business remains a leading player in the industry adapting fast to the constantly evolving needs of all of their customers.
Of late, Skyjack acquired Carelift Equipment in August of the year 2007 and Volvo's Material Handling Equipment so as to try to expand their Telehandling product offering. The resulting Zoom Boom and VR series telehandlers along with the extra production ability further ensures the company`s growth and success.