Unless otherwise requested, flemish eye mechanical splices are used on all yarbrough wire rope slings. For this reason casar special wire ropes fulfill the requirements of famous drum manufacturers. Casar special wire rope has a steel core which is an independent rope, closed in the opposite direction to the outer strands. The 6 x 36 classification of wire ropes includes standard 6 strand, round strand ropes with 27 through 49 wires per strand. Flexible wire rope is formed by using many small diameter wires twisted around a central core. Wire ropes should be stored in a wellventilated covered shed free from damp, dust, chemicals, fire or fumes. Wire rope slings fabricated with fiber center wire rope are available on special request. To download a copy of the casar catalogue click on the pdf file listed under attachments. Scaw south africa and haggie reid anticircumvention inquiry. To select the best wire rope for each application, one. Generally the standard production tolerance is at the upper. Wire rope is widely used for hoists, haulage, and conveyor applications, where the wire rope supports. The rope construction seale, warrington, filler wire, etc. While storing the reels or coils, avoid direct contact with the ground.
How to avoid block twisting cabling block twisting or cabling is one of the most frequently encountered wire rope problems in the construction industry. It sounds incredible, but a wire rope can still be in good condition even if every single one of its wires is broken 200 times. If possible, sheaves must be inspected as to the proper of their bearings. Traction and haulback rope for scrapers and construction hoists, tag line and guide line for clam shells, trolley rope for hoizontal booms drum and friction sheave. This document is issued in accordance with the requirements of section 6 of the health and safety at work etc act 1974, amended march 1988. In contrast to an opinion voiced in din 15 020 which accepts smaller diameters for compensation sheaves than for all other sheaves in the reeving system, some rope zones on compensation sheaves are. Hoist rope for mobile cranes, electrical hoists and other applications, where rotation resistant ropes are required. Our rigging division is a fullservice facility operating. These ropes are typically used in single part line applications, or when operating conditions require resistance to. The strands of a wire rope consist of a number of individual wires laid about a central core. It can be used with or without a swivel as a mobile. Guidelines on discard criteria for steel wire ropes steel wire ropes, like any machine, deteriorate during storage as well as service.
Before wire ropes were invented in 1834, chains were the most common lifting means. Chains are linear arrangements of load bearing elements. Determine whether the rope has 6, 8 or 9 strands by looking at the shackles where the stranding is easier to see. Stranding is the number of strands per rope and the number of wires per strand an 8strand rope with 19 wires per strand has 8 x 19 stranding. Survey of removal criteria a wire rope must be removed if one or more of the following criteria can be satisfied. The construction of a wire rope wire rope consists of a group of strands laid helically around a core. It can be used to transmit motion through almost any plane.
Handling, installation and maintenance of steel wire ropes. When this problem occurs, the wire rope is most often blamed, and other equally important factors in the operation are overlooked. Wireco worldgroup has grown and endured to be the largest producer of wire rope and. Wire rope sheave with negative impressions negative impressions of the rope s surface in the grooves of sheaves and drums quite regularly on cranes and other rope drives impressions in the grooves of the sheaves or drums can be found which look like the negative imprint of the wire rope in use fig. Apart from the distribution of wire rope nobles personnel can supply guidance on correct usage and selection of wire rope. The service life of the rope becomes the greater, 1.
Powerstrand wire rope 2 all wire rope is manufactured with three basic components. Should there be any differences between this chart and your machines load chart, the information in your machines load chart will prevail. The requirements for the end fitting are demanding. These descriptions of the construction fail to include the core as a part of the primary number. Yet, thanks to its unique design, xlt 4 is not classi. Please note that casar have developed special rope constructions speci. Conventional, swaged, dyform, dyswaged, blue strand, n.
All other rope constructions may not be used with a swivel. Verreet, handling, installation and maintenance of steel wire ropes, 297 if the new rope is pulled in with the help of the used one, the two rope ends are often buttwelded together. Our professionals enjoy the opportunities of a global manufacturing and distribution leader as well as a culture of open communication, professional growth, and friendly camaraderie that fosters innovation and problem solving. Wire rope forensics wire rope forensics 2 these two authors have pooled their experience in order to create this document. In the example above, each individual wire is arranged around a central wire to form a 7 wire strand. Wire rope slings products include gold lock wire rope slings, attachment efficiency effect of angles on sling capacities, and more. The points are valid for ugrooves, point 2 and 3 also for vgrooves. The primary factor in wire rope performance is selecting a wire rope with the best combination of properties for the job. The inspection of steel wire ropes d rope zones on compensation sheaves. The load is introduced into the wire rope by means of its end connection.
Guidelines for inspecting a wire rope system or installation are now available in a new 12page brochure available from the wire rope technical board. Nobles branches throughout australia have swaging presses. Hoist rope for electrical hoists and lifting devices with multiple part reeving, twin hoist systems with left and right hand ropes, where rotation resistant ropes are not required. A very flexible rope with a core in a special design avoiding crossovers between the strands of core and preventing internal rope destruction.
Our comprehensive line of underground mining ropes for drum hoists, friction winders and shaft sinking applications offer strength and reliability while ensuring convenient sourcing for all your needs, including specialty applications. Handling and installation of wire ropes unwinding a rope extra care must be taken to bring the rope without tensions or any outer damages into the reeving y correct. Casar, german wire rope manufacturer, part of wireco worldgroup operation casar, a german army attack in world war ii disambiguation page providing links to topics that could be referred to by the same search term. Computer aided rope design card with the help of the casar developed card computer aided rope design program, the structure of each rope is optimized.
Wire rope simple english wikipedia, the free encyclopedia. Reproduction is not allowed unless specically agreed. Construction the main components of wire rope are shown below. The group officially came into being on 1 september 2012, and is now a single, marketoriented organization in which an enormous amount of knowledge and traditional skill is made available. If outdoor storage cannot be avoided the ropes must be covered in. Proof loading of all lifting equipment telarc registered. Casar wire rope pdf to contact us, please complete the form below and we will respond as soon as. Lindsay, wire rope inspection and examination, 1996 5. Under load, the core tries to twist the rope in the one direction, the outer strands try to twist it in the opposite direction. Standard 6 x 19 and 6 x 36 classification ropes 6 x 19 vs.
Hoisting rope in multiple part reeving for smaller lifting heights as well as for twin hoist systems with left and right hand. Although their operating properties vary, all have the same weight per foot. Standard withdrawn din en steel wire ropes safety part 4. Swivel use rotation resistant ropes can be used with a swivel. Casar wire rope catalogue active lifting equipment. Part of the reason for this is that the composition and the construction of the cores in these wire ropes is wire rope.
If only one chain link fails, the whole system will fail fig1. The inspection of steel wire ropes wire rope technology. For this, keep the reels or coils on steel or wooden. The deterioration and thus the life of the rope depends on various factors, in addition to the manufacturing quality of the rope, like storage, handling, maintenance and operating. A steel wire rope has failed and the accident has caused a lot of damage.
Rope breaking force can be seen as a function of metallic area, strength and spinning factor. As the rope size increases, for instance, a large number of wires can be used to achieve required fatigue resistance, and still those wires will be large enough to offer adequate resistance to abrasion. A connection of that kind can transfer the twist of the old rope, built up in the reeving system, into the new rope. Ropequip, hendrik veder, european rope services together with wire rope services and industrial ropes have merged into the hendrik veder group. Wire rope slings catalog industrial wire rope supply. Wire rope and hoist information the information in this chart is for reference only. Also, it must be able to rotate freely in one or two planes around. How steel wire ropes should be stored steel wire ropes should be stored in a clean, cool, dry place indoors. Casar special wire rope catalogue asset management login. Please click on the name or image of the product that you wish. Casar special wire ropes are designed to provide maximum flexibility. Boom hoist rope for mobile cranes and grabs, hoist rope for container cranes.
Hoist rope for mobile cranes, electrical hoists and other applications, where rotationresistant ropes are required. Each strand is likewise made of metal wires laid together like a helix. Wire and synthetic slings gr100 chain assemblies rigging hardware casar flexx crane rope macwhite lankhorste union clips shackles mckissick blocks lifting clamps other rigging hardware spreader beams lifting beams plate clamps beam clamps pipe carriers gantry cranes synthetic slings. Boom hoist rope for mobile cranes and grabs, hoist rope for container cranes, floating cranes, portal cranes, etc. Negative impressions of the ropes surface in the grooves of. Crucial wire rope properties in crane application which rope. Careful attention to quality and engineering design details ensures that a casar rope will routinely outperform conventional six strand and rotation resistant ropes. Casar starlift properties applications a very flexible rope with a core in a special design avoiding crossovers between the strands of core and preventing internal rope destruction. Verreet, handling, installation and maintenance of steel wire ropes, 297 1. The service life of that rope can be greatly extended by following a planned program of installation, operation, maintenance and inspection to avoid the most common causes of wire rope failure. A fundamental requirement for wire ropes is the achievement of the minimum breaking force that complies with the crane or winch safe working load.
Steel wire ropes, on the other hand, are parallel arrangements of load bearing elements. Rotationresistant wire rope wire rope in this special category is designed to resist the tendency to spin or rotate under load. The work of a wire rope detective resembles very much that of sherlock holmes. Casar is committed to providing the broadest range of wire ropes for all of your mining applications. With nearly 4,000 employees worldwide, wireco worldgroup is a great place for you to build a rewarding career. The rope user, and maybe also a judge in court, will want to know whether the rope was murdered by external factors or committed suicide e. Special wire ropes the premium line cnhijstechniek. Hoist rope for electrical hoists and lifting devices with multiple part. The geometrical design of a rotationresistant casar special wire rope is such that the moments. Wire rope consists of several strands laid or twisted together like a helix. Computer aided rope design card with the help of the casardeveloped card computer aided rope design program, the structure of each rope is optimized. Assemblies and fittings catalog wire rope assemblies.
Wire rope engineers design those parts in different steel grades, finishes and a variety of constructions to attain the best balance of strength, abrasion resistance, crush resistance, bending fatigue resistance and corrosion resistance for each application. Hand tucked splices are available on special request. Initially wrought iron wires were used, but today steel is the main material used for wire ropes. The constructions included in wire rope are numerous, but the most common are 6 x 19 and 6 x 37 class wire ropes. The inspection of steel wire ropes rope technology. A introduction to wire rope to the uninitiated, a wire rope may appear to be a simple, unitary and elongate object, perhaps thought of reductively as a thick string or cable.
Every effort is made to maintain and improve the quality of casar wire rope products for the mining industry. Introduction a wire rope is a highly stressed machine element. Upon closer inspection however, one begins to appreciate that wire rope is a complex piece of mechanical machinery with a number of different. Casar special wire ropes fulfill the requirements of famous drum manufacturers. Figure 3 shows a schematic arrangement of the 250 wires making up a wire rope for space reasons, only 30 wires are dis played. Roland verreet 1 the use of ropes in early civilizations 2 2 ropes in the middle ages 3 3 the. The ropes must not be allowed to rest on the floor. Of course, special tolerances or limited tolerance ranges can also be covered. The high flexibility is achieved by a combination of different technologies. Parafit boom hoist rope for mobile cranes and grabs, hoist rope for container cranes, floating cranes, portal cranes, electrical hoists and lifting devices where rotation resistant ropes are not required.
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