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Leaf Chains comprise different applications and are regulated by ANSI. They are designed for low-speed pulling, for tension linkage and forklift masts, and as balancers between counterweight and head in several machine gadgets. Leaf chains are sometimes also known as 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 pitch and the lacing of the links. The chains have particular features like high tensile strength per section area, that allows the design of smaller machines. There are B- and A+ kind chains in this series and both the AL6 and BL6 Series comprise the same pitch as RS60. Lastly, these chains cannot be powered using sprockets.
Handling and Selection
In roller chains, the link plates maintain a higher fatigue resistance due to the compressive stress of press fits, yet the leaf chain only contains two outer press fit plates. On the leaf chain, the most acceptable tension is low and the tensile strength is high. If handling leaf chains it is important to confer with the manufacturer's handbook to be able to ensure the safety factor is outlined and use safety guards at all times. It is a good idea to carry out extreme caution and use extra safety guards in applications where the consequences of chain failure are serious.
Higher tensile strength is a direct correlation to the use of a lot more plates. As the utilization of more plates does not enhance the utmost permissible tension directly, the number of plates can be restricted. The chains need regular lubrication as the pins link directly on the plates, generating a very high bearing pressure. Utilizing a SAE 30 or 40 machine oil is often advised for the majority of applications. If the chain is cycled over 1000 times day by day or if the chain speed is over 30m for every minute, it would wear very rapidly, even with constant lubrication. Therefore, in either of these situations using RS Roller Chains would be much more suitable.
AL type chains are just to be used under certain situations such as where there are no shock loads or if wear is not a big issue. Be positive that the number of cycles does not exceed one hundred day after day. The BL-type will be better suited under different situations.
The stress load in components would become higher if a chain with a lower safety factor is selected. If the chain is also utilized amongst corrosive conditions, it could easily fatigue and break really quick. Performing regular maintenance is really vital when operating under these kinds of conditions.
The type of end link of the chain, whether it is an inner link or outer link, determines the shape of the clevis. Clevis connectors or otherwise called Clevis pins are constructed by manufacturers but often, the user supplies the clevis. A wrongly made clevis can lessen the working life of the chain. The strands must be finished to length by the maker. Refer to the ANSI standard or phone the manufacturer.
In the past decade, Skyjack was bought by the Linamar Corporation, a leading manufacturer of precision machined components, assemblies and modules. At present, Skyjack has manufacturing facilities in United States, Canada and Hungary with added support offices in Asia and Europe.
Skyjack became the industry leader of aerial hoist machinery by combining features such as quality, serviceability and durability, making their own scissor lifts recognized all over the word for product efficiency and reliability. Skyjack proudly makes a full line of self-propelled scissor hoists. Their elevated work heights reach about fifty six feet. The company`s existing Boom lift model series has telescopic booms starting from forty five feet to seventy one feet. Skyjack has plans to further extend their boom hoist product line. The business remains a dominant player in the trade adapting rapidly to the constantly changing needs of their clients.
Recently, Skyjack purchased 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 additional production ability further ensures the company`s success and growth.
