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Leaf Chains have different applications and are regulated by ANSI. They are designed for tension linkage, lift truck masts and for low-speed pulling, and as balancers between counterweight and head in some machine gadgets. Leaf chains are sometimes likewise called Balance Chains.
Features and Construction
Constructed of a simple pin construction and link plate, steel leaf chains is identified by a number which refers to the lacing of the links and the pitch. The chains have particular features like for instance high tensile strength per section area, that allows the design of smaller devices. There are B- and A+ kind chains in this particular series and both the BL6 and AL6 Series contain the same pitch as RS60. Finally, these chains cannot be powered using sprockets.
Handling and Selection
In roller chains, the link plates have a higher fatigue resistance due to 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. If handling leaf chains it is important to confer with the manufacturer's manual in order to guarantee the safety factor is outlined and use safety measures at all times. It is a better idea to carry out utmost care and use extra safety guards in applications wherein the consequences of chain failure are serious.
Higher tensile strength is a direct correlation to the use of a lot more plates. Because the use of a lot more plates does not enhance the most allowable tension directly, the number of plates can be limited. The chains need regular lubrication because the pins link directly on the plates, producing a really high bearing pressure. Using a SAE 30 or 40 machine oil is normally suggested for the majority of applications. If the chain is cycled more than 1000 times every day or if the chain speed is more than 30m per minute, it will wear really quick, even with constant lubrication. Hence, in either of these situations utilizing RS Roller Chains would be more suitable.
AL type chains are only to be used under particular situations like for instance where there are no shock loads or when wear is not a big concern. Make sure that the number of cycles does not exceed 100 on a daily basis. The BL-type would be better suited under different situations.
If a chain using a lower safety factor is selected then the stress load in components will become higher. If chains are used with corrosive elements, then they could become fatigued and break rather easily. Doing frequent maintenance is really important if operating under these types of situations.
The outer link or inner link kind of end link on the chain would determine the shape of the clevis. Clevis connectors or likewise known as Clevis pins are constructed by manufacturers, but the user normally provides the clevis. A wrongly made clevis could reduce the working life of the chain. The strands should be finished to length by the manufacturer. Check the ANSI standard or call the manufacturer.
In the past 10 years, Skyjack was bought by the Linamar Corporation, a leading producer of modules, precision machined components and assemblies. Today, Skyjack has manufacturing plants in United States, Canada and Hungary with added support offices in Asia and Europe.
Skyjack became the leader in the industry of aerial hoist machinery by combining features like for example durability, quality and serviceability, making their very own scissor hoists recognized all around the globe for product efficiency and reliability. Skyjack proudly produces a full line of self-propelled scissor hoists. Their elevated work heights reach up to 56 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 extend their boom lift truck product line. The company remains a dominant player in the trade adapting fast to the constantly changing requirements of their clients.
Recently, Skyjack acquired Carelift Equipment in August of the year 2007 and Volvo's Material Handling Equipment in order to try to expand their Telehandling product offering. The resulting Zoom Boom and VR series telehandlers along with the added manufacturing capability further ensures the company`s success and growth.
