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Leaf Chains have several applications and are regulated by ANSI. They are used 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 occasionally also referred to as Balance Chains.
Construction and Features
Leaf chains are steel chains with a simple link plate and pin construction. The chain number refers to the lacing of the links and the pitch. The chains have particular features like for instance high tensile strength per section area, which enables the design of smaller mechanisms. There are B- and A+ type chains in this series and both the AL6 and BL6 Series comprise the same pitch as RS60. Finally, these chains cannot be powered using sprockets.
Selection and Handling
Comparably, in roller chains, all of the link plates maintain higher fatigue resistance due to the compressive stress of press fits, whereas in leaf chains, only two outer plates are press fit. The tensile strength of leaf chains is high and the maximum allowable tension is low. When handling leaf chains it is vital to confer with the manufacturer's instruction booklet to be able to guarantee the safety factor is outlined and utilize safety guards at all times. It is a better idea to carry out extreme care and utilize extra safety guards in functions wherein the consequences of chain failure are severe.
Higher tensile strength is a direct correlation to the use of a lot more plates. Because the utilization of a lot more plates does not improve the most allowable tension directly, the number of plates can be restricted. The chains need frequent lubrication since the pins link directly on the plates, generating a really high bearing pressure. Utilizing a SAE 30 or 40 machine oil is frequently advised for most applications. If the chain is cycled over one thousand times day after day or if the chain speed is more than 30m for each minute, it will wear very rapidly, even with continual lubrication. Therefore, in either of these situations utilizing RS Roller Chains will be a lot more suitable.
AL type chains are just to be used under particular conditions like where there are no shock loads or if wear is not really a big problem. Make certain that the number of cycles does not go beyond 100 every day. The BL-type will be better suited under other conditions.
The stress load in components would become higher if a chain with a lower safety factor is selected. If the chain is also used amongst corrosive conditions, it could easily fatigue and break really quick. Performing frequent maintenance is vital when operating under these types of conditions.
The outer link or inner link type of end link on the chain will determine the shape of the clevis. Clevis connectors or Clevis pins are constructed by manufacturers, but the user typically supplies the clevis. A wrongly constructed clevis can lessen the working life of the chain. The strands must be finished to length by the manufacturer. Refer to the ANSI standard or call the manufacturer.
In the past 10 years, Skyjack was acquired by the Linamar Corporation, a leading producer of modules, precision machined components and assemblies. Now, Skyjack has production facilities in Hungary, the US and Canada with additional support offices in Europe and Asia.
Skyjack became the leader in the industry of aerial lift truck machinery by combining features like serviceability, durability and quality, making their own scissor platform lifts recognized all around the globe for product reliability and efficiency. Skyjack proudly manufactures a full line of self-propelled scissor hoists. Their elevated work heights reach up to 56 feet. The company`s current Boom lift model series has telescopic booms starting from 45 feet to 71 feet. Skyjack has plans to further develop their boom lift product line. The company is still a leading player in the trade adapting fast to the constantly changing requirements of their clients.
Skyjack`s purchase of Carelift Equipment was done in August of 2007. Most recently, their acquisition of Volvo`s Material Handling Equipment business expands Skyjack`s Telehandler product offering. The resulting Zoom Boom and VR series telehandlers along with the additional manufacturing capability further guarantees the company`s success and growth.
