single wire rope sling manufacturer
In the case of the "U" shaped sling, lifting is accomplished by firmly attaching the eyes to a hook or hoist, though both ends are then simultaneously lifted in order to wrap around or cradle the supplies or finished goods to be lifted.
Unlike synthetic or fiber slings, wire rope offers increased resistance to wear and abrasion and can be used for both hot and cold materials as well as in corrosive applications such as those in marine, construction, aerospace, manufacturing, assembly, transport, shipping, and other industries where wire rope slings are commonly used. Wire ropes fitted with slings in these applications also serve to improve connectivity and prevent fraying of the rope.
Like stranded wire ropes, the slings that they attach too are strictly regulated and must be inspected regularly as mechanical failure puts both machinery and employees at serious risk. To prevent such disruptions, it is important to select the proper sling for a given application.
Slings are most commonly constructed simply by looping or folding the end of a wire rope back onto itself and holding it in place with a firm fitting such as a clamp. Alternatively, the folded segment of wire may be braided or twisted along the main body of rope and otherwise held in place through welding or similar processes.
The rope itself is comprised of cold drawn filaments that are twisted or braided into strands which in turn are helically wrapped around a core. The multilayered formation of wire rope acts as a safety measure as individual strands are more likely to fail than the rope as a whole, allowing the other strands to act as a backup.
Popular materials for wire rope and sling construction include aluminum, nickel alloy, bronze, copper, and titanium, although steel and stainless steel are the most common due to their increased strength and availability.
Additional considerations include the wire rope sling"s dimensions, fatigue strength, its ability to bend without distortion, to withstand abrasion, and environmental conditions as well as the intended use for the sling.
DCL Mooring and Rigging is a leading fabricator and manufacturer of wire rope slings. DCL manufactures single leg slings with all types of end pieces to customize for the job that the sling needs to accomplish.
We have them with the basic swage loop, swage thimble, swage thimble eye hook, swage thimble safety pin anchor shackle, swage hawser thimbles, open swage socket, and closed swage socket. We also have multi-leg bridles, including 2 leg bridles which use a master link at the top to hold the two separate slings together. These are perfect for lifting items that need to be attached at multiple points to properly distribute the weight of the item being lifted. 3 leg bridles and 4 leg bridles again are the same thing, just adding another separatee sling onto the master link. Adding legs increases the working load limit that the sling can hold, and also properly distributes the weight across all attached legs. Another component common on wire rope slings is poured sockets. We use a compound called wirelock to attach the wire rope sling to the socket for maximum efficiency. Wirelock is a resin compound made by Crosby, for use in pour socket wire rope sling assemblies. We also manufacture grommets which are basically slings for use in lifting an item that has no place to hook or latch onto, basically, it is an endless wire rope sling that can be fitted into specific designs to properly lift odd-shaped items. DCL also manufactures multi-part braided slings including 2-leg choker bridles, 8 part braided choker slings, tri-flex wire rope slings, gator-flex grommets, gator-max wire rope slings with parallel eyes, gator-laid wire rope slings with parallel eyes, gator-flex wire rope slings, and T & D Ultra-Flex Wire Rope Slings.
Manufacture of material handling gripper slings made from 304 or 316 stainless steel, 4130 heat-treated alloy steel, exotic alloys and neoprene. Features include polyurethane plastic-covers, wire mesh construction, interwoven and tolerate abrasive loads. Suitable for handling all types of products such as coiled strips, thin-walled tubing, polished shafting, lumber, paper machine rolls, precast hollow core concrete beams, structural beams, cold drawn flats and irregularly shaped objects. Serves the marine, automotive, beverage, cement, energy, food and mining industries.
Stainless Steel Slings, Fiber Core Slings with reduced Work Load Limits, Cable Laid Slings with galvanized finish and larger diameter slings are also available.
When wire rope is bent around a load, or diameter, the rope strength is decreased. The D/d ratio is diameter of the object around which the rope is bent (D), divided by the diameter (d) of the rope. D/d affects slings used in basket hitches and must be taken into consideration. When the diameter of the load is 4 times the diameter of the wire rope sling the D/d ratio is 4/1 and the sling efficiency is 75% of the Basket WLL.
When it comes to using wire rope slings in or on your jobsite, there are a few things to keep in mind in order to make sure that your wire rope sling is ready for use and that it will last for years to come. For starters, be sure to designate a qualified person to inspect all of your slings, fastenings, and attachment each day before use for damage or defects. A thorough inspection of your wire sling should check for:
By regularly performing these inspections that check the condition of your rope, you’ll not only be able to give your wire rope sling the care and maintenance that it needs to work at its best, you’ll be protecting your entire team and jobsite from the potential dangers that can occur if a wire rope sling snaps during use.
Single leg wire rope slings are just as they sound- they are comprised of a single length of wire rope. Also sometimes known as one leg wire rope slings or single leg cable slings, these heavy duty lifting slings offer some versatility as they can be manufactured with a variety of end configurations.
An eye loop is formed using a flemish eye splice, in which the rope is separated into two parts. One part contains three strands and the other three strands plus the core. These two rope parts are then re-laid back into the opposite direction, forming an eye. The entire area is then secured by a metal pressed sleeve.
Thimble & Thimble Sling: Similar to a traditional eye & eye sling but fitted with protective thimbles on each eye. A thimbled protects the eye from pressure, wear, and tear, to extend the working life of the sling.
Sliding Choker Wire Sling:Sliding choker wire rope slings are made of 6 x 19 EIPS wire rope and have a sliding choker hook between the two eyes that slides from one end to the other for easy hook-up. Sliding wire choker slings feature a regular eye for the top portion of the lifting sling and a thimbled eye for the portion of the sling that loops back to attach to the sliding hook. This helps prevent wear and tear on the sling eye by protecting the steel cable rope from rubbing on the hook. Our sliding wire rope choker slings are also available with a latched choker hook by special order.
Ultra Flexible Cable Laid Sling: Cable laid wire rope slings are manufactured using an ultra-flexible 7 x 7 x 7 galvanized aircraft cable to offer more flexibility than a standard steel wire cable sling. Though the cable laid sling is weaker in strength than the standard wire rope, it offers excellent corrosion resistance. Our standard cable laid metal slings have eyes on both ends but other fittings are also available, including thimbles, hooks, crescent thimbles, and slip-thru thimbles to create the custom steel strand lift sling you need.
As with all lifting slings, the rated capacities of single leg wire slings will vary based on the type of wire rope, as well as the direction and angle of the pull.
Proof testing certificates can be supplied with your order for a nominal fee and must be requested at the time of order. Proof tests are performed in the factory where the sling is pull tested to 2x the vertical rating and officially recorded as proof for governing bodies. During the standard manufacturing process, only random slings during a production run are tested for compliance; in order to provide proof testing certificates with your order, every sling must be pull tested at the time of manufacture.
Wire rope slings are widely used in the lifting applications and engineering industries for extremely heavy loading. They can be used on wire rope hoist, pulley and block, crane and winch pulling equipment at dockyards and large construction sites.
They are available in single leg or multi legs like the chain slings, however, the wire rope slings are more safety than chain slings for wire rope sling can still hold the load if 1 or 2 wires are broken, while the chain sling will fail for 1 link broken result to the whole chain sling failed.
Usually, we use a less flexible or a stiffer wire rope to assembly for they are more crush and abrasion resistance than a very flexible one since wire rope slings are used in a straight line for lifting connect with a master link on one end and a hook or hooks on the other end, need more load strength than flexibility.
SWR specialise in the design, specification and manufacture of wire rope slings and assemblies for a large range of industries. Our UK facility can produce slings ranging from 1mm to 52mm in rope diameter which conform to BS EN 13414-1: 2003. We also have a large stock of wire rope and fittings to choose from. Need something more specific? No problem, we can even design bespoke fittings and create tailored solutions on request.
All wire rope slings are produced with their own ID numbers to ensure full traceability under our ISO9001 production system. In-house testing also means we can proof load and destruction test your slings and wire rope. Rest assured, everything that leaves our facility meets the highest possible standards.
Wire rope slings are common components of wire rope assemblies that serve as a point of attachment for cranes, hooks and hoists in many heavy lifting or pulling applications.
Unlike synthetic or fiber slings, wire rope offers increased resistance to wear and abrasion and can be used for both hot and cold materials as well as in corrosive applications such as those in marine, construction, aerospace, manufacturing, assembly, transport, shipping and other industries where wire rope slings are commonly used. Wire ropes fitted with slings in these applications also serve to improve connectivity and prevent fraying of the rope. Though the majority have predetermined dimensions, they may be adjustable to accommodate for a change in the size of cargo while maintaining a secure fit.
Slings are most commonly constructed simply by looping or folding the end of a wire rope back onto itself and holding it in place with a firm fitting such as a clamp. Alternatively the folded segment of wire may be braided or twisted along the main body of rope and otherwise held in place through welding or similar processes.
The rope itself is composed of cold drawn filaments that are twisted or braided into strands which in turn are helically wrapped around a core. The multilayered formation of wire rope acts as a safety measure as individual strands are more likely to fail than the rope as a whole, allowing the other strands to act as a backup.
Additional considerations include the wire rope sling"s dimensions, fatigue strength, its ability to bend without distortion, to withstand abrasion and environmental conditions as well as the intended use for the sling. Wire rope slings are stress tested during manufacturing to determine breaking point and safe usage guidelines which should be carefully considered.
The term sling can refer to one of two configurations for lifting and hoisting apparatus. Slings as wire rope fittings involve the addition of a loop at the end of a length of wire through which hooks and other apparatus may be looped or fastened. The term may also apply to a length of cable that has this same “U” or teardrop shaped eye, but on either end of the cable.
In the case of the "U" shaped sling, lifting is accomplished by firmly attaching the eyes to a hook or hoist, though both ends are then simultaneously lifted in order to wrap around or cradle the supplies or finished goods to be lifted.
Popular materials for wire rope and sling construction include aluminum, nickel alloy, bronze, copper and titanium, although steel and stainless steel are the most common due to their increased strength and availability.
Like stranded wire ropes, the slings that they attach too are strictly regulated and must be inspected regularly as mechanical failure puts both machinery and employees at serious risk. To prevent such disruptions, it is important to select the proper sling for a given application.
The steel core single leg wire rope sling is a type of suspension device that can be used to lift and move objects. It consists of only one leg, with an oval master link on the…
Wire rope lifting slings, bridles and assemblies provide great durability and high tensile strength for lifting heavy loads. In addition, wire rope lifting slings are lighter in weight and more cost efficient than chain slings. Wire rope slings, sometimes referred to as wire slings, or cable lifting slings, are constructed using a variety of different styles and sizes of steel wire rope. Every style and size of wire rope offers different properties and benefits such as:
Each type of wire rope has benefits and drawbacks. What all wire ropes have in common however, is that they are made up of steel wires which form individual stands. These strands are laid in a helical pattern around a fiber or steel IWRC (independent wire rope core) core.
Wire rope lifting slings, bridles and assemblies are highly customizable, so if you are unable to find what you are looking for, or if you don’t know exactly what you need, call or email our sales team to speak with a rigging product specialist.
The durability of steel cable lifting slings is also put to the test in the harsh environments seen in steel mills and forging facilities. Every steel wire rope configuration will offer different properties and will be better equipped to handle certain applications. Generally, a smaller number of large outer wires will provide more wear, corrosion and abrasion resistance. Conversely, a larger number of smaller outer wires will provide better flexibility and fatigue resistance.
After you decide what construction and size of wire rope fits your application, you must configure the entire sling. Wire rope bridles and assemblies are available in single-leg, double-leg, triple-leg, and quadruple-leg configurations. They most commonly have 2 eyes and are constructed using a mechanical flemish splice. Wire rope lifting slings can be used in vertical, choker and basket hitches. They can also be equipped with a variety of attachments and fittings to accommodate almost any overhead lifting application.
Although wire rope sling fittings and attachment can be reused, the wire rope itself is not repairable. If a wire rope sling fails an inspection, it is to be properly destroyed and disposed of
It is important to inspect wire rope slings regularly and to keep a record of all sling inspections. At Tri-State Rigging Equipment we offer a full range of rigging inspection and repair services. The standards that govern wire rope sling inspection are OSHA 1910.184 and ASME B30.9. It is recommended that wire rope rigging slings first undergo an initial inspection when you receive the lifting sling from the manufacturer. The purpose of this initial inspection is to:
Wire rope slings, bridles and assemblies should also be inspected by a designated and qualified individual every day before use to make sure that the sling is in working condition and will lift its rated capacity. The person performing the inspection should examine all the wire rope, fastenings and attachments on the wire rope sling. The inspector is looking for visual indications of any defects, deformities and general damage that might affect the integrity of the sling.
Depending on your application, it may be recommended that you perform these visual inspections more than once a day. If the wire rope sling is used many times throughout the day, by multiple individuals, across multiple shifts, it is imperative that the sling be inspected before every shift change and before any change in lifting application.
ASME standards further require a thorough periodic inspection to be performed at least once a year by either a professional service provider, or by a Qualified Person. In addition, written records must be kept until the next periodic inspection. The rejection criteria for periodic wire rope sling inspections are as follows:
10 or more randomly distributed broken wires in one rope lay, or 5 or more broken wires in one strand in one rope lay, for strand-laid grommets and single part slings.
If your wire rope sling shows any of the rejection criteria above, you must remove the sling from service, and it must be destroyed. Properly destroying rigging equipment is imperative because you can be held accountable for damage done by people who find and use your discarded slings. Therefore, lifting slings deemed not suitable for service must be destroyed beyond use and beyond repair. The process for destroying a wire rope sling is as follows:
The purpose of daily and periodic wire rope sling inspections is not to get anyone in trouble but rather to gain knowledge of the frequency of use, severity of conditions, and nature of lifts, and consider how all these factors affect your wire rope sling. The most important reason to perform daily and periodic wire rope sling inspections, however, is to keep you and your coworkers safe.
Tri-State Rigging Equipment is a custom manufacturer, service provider and distributor for all wire rope lifting slings serving clients from coast to coast, Canada, Mexico and especially focused in the states of Missouri, Illinois, Indiana, Iowa, Kansas, Nebraska, Arkansas, Mississippi, Tennessee, Kentucky, South Carolina, Florida, and Oklahoma.