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Utilized in different applications, leaf chains are regulated by ANSI. They can be used for lift truck masts, as balancers between heads and counterweight in several machine tools, and for tension linkage and low-speed pulling. Leaf chains are at times even known as Balance Chains.
Features and Construction
Leaf chains are actually 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 certain features such as high tensile strength per section area, which enables the design of smaller mechanisms. There are B- and A+ type chains in this particular series and both the AL6 and BL6 Series comprise the same pitch as RS60. Finally, 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 has two outer press fit plates. On the leaf chain, the most acceptable tension is low and the tensile strength is high. While handling leaf chains it is essential to check with the manufacturer's catalogue to be able to guarantee the safety factor is outlined and use safety guards all the time. It is a great idea to exercise utmost caution and utilize extra safety guards in functions where 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 more plates does not enhance the most permissible tension directly, the number of plates may be limited. The chains require regular lubrication in view of the fact that the pins link directly on the plates, producing an extremely high bearing pressure. Making use of a SAE 30 or 40 machine oil is often advised for nearly all applications. If the chain is cycled over one thousand times day after day or if the chain speed is over 30m for each minute, it would wear extremely quick, even with continual lubrication. Thus, in either of these conditions the use of RS Roller Chains will be much more suitable.
AL type chains are only to be used under particular conditions like where there are no shock loads or if wear is not really a huge concern. Make positive that the number of cycles does not exceed 100 day by day. The BL-type will 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 used with corrosive elements, then they may become fatigued and break somewhat easily. Performing frequent maintenance is important when operating under these types of situations.
The inner link or outer link kind 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 normally supplies the clevis. An improperly constructed clevis could reduce the working life of the chain. The strands should be finished to length by the producer. Refer to the ANSI standard or call the manufacturer.
In the new millennium, Skyjack was bought by the Linamar Corporation, who is LNR on the TSX, a primary manufacturer of precision-machined components, modules and assemblies. Today, Skyjack has production facilities in the US, Canada and Hungary with additional support offices in Europe and Asia.
The Skyjack trademark became the industry leader for aerial hoist equipment by combining features like durability, quality and serviceability, making their very own scissor lifts know around the world for product efficiency and reliability. Skyjack makes numerous various self-propelled aerial hoists for its worldwide customer base. Their elevated work heights reach up to 56 feet. The company`s existing Boom hoist model series has telescopic booms ranging from 45 feet to 71 feet. Skyjack has plans to further develop their boom lift truck product line. The company is still a dominant player in the trade adapting rapidly to the always evolving requirements of all of their customers.
Skyjack`s purchase of Carelift Equipment was completed 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 together with the extra manufacturing capability further guarantees the company`s success and growth.
