wire rope eye splice strength quotation

Wire rope splicing is essentially the formation of a knot between two parts of the same rope or between two separate ropes by separating and unravelling the strands and interweaving the threads together to produce a strong joint. Splicing forms a very strong knot which stays secure even if exposed to water.

There are different types of wire rope splicing. The two more common ones areBack or end splicing – This is a type of splicing where rope end strands are directly spliced without making a loop. With this wire rope splicing, rope ends are drawn to a close to prevent fraying.

Eye splicing – This a more popular type of wire rope splicing which involves taking the working end of the rope to form a loop at the end. The end of the rope strands are unraveled, then passed over and under against the lay of the rope to interweave it back into the main length of the rope.

Wire rope splicing maintains almost 95% of the wire rope’s strength. You can employ splicing in three-strand braided ropes, or even in over 12-strand braided ropes.

Splicing lets you create a new rope of any length, alter an existing rope to suit a changing application, or repair a damaged wire rope. There are two main disadvantages to splicing – the expanding thickness of the line at the joint and the distortion in the shape of the rope.

Check the wire rope tools and accessories section of this website for more tools or fill out the enquiry form and let us help with your wire rope splicing needs.

In stricter senses, the term wire rope refers to a diameter larger than 9.5mm (3⁄8in), with smaller gauges designated cable or cords.wrought iron wires were used, but today steel is the main material used for wire ropes.

Historically, wire rope evolved from wrought iron chains, which had a record of mechanical failure. While flaws in chain links or solid steel bars can lead to catastrophic failure, flaws in the wires making up a steel cable are less critical as the other wires easily take up the load. While friction between the individual wires and strands causes wear over the life of the rope, it also helps to compensate for minor failures in the short run.

Wire ropes were developed starting with mining hoist applications in the 1830s. Wire ropes are used dynamically for lifting and hoisting in cranes and elevators, and for transmission of mechanical power. Wire rope is also used to transmit force in mechanisms, such as a Bowden cable or the control surfaces of an airplane connected to levers and pedals in the cockpit. Only aircraft cables have WSC (wire strand core). Also, aircraft cables are available in smaller diameters than wire rope. For example, aircraft cables are available in 1.2mm (3⁄64in) diameter while most wire ropes begin at a 6.4mm (1⁄4in) diameter.suspension bridges or as guy wires to support towers. An aerial tramway relies on wire rope to support and move cargo overhead.

Stock up on every variety of steel wire rods at the Alibaba metalworking store. Our listings feature wholesale steel rods from a network of dependable Chinese manufacturing partners. If you need to source steel rods for construction projects, you"ll find products that are robust and durable. And if you need welding rods, they are easy to find via our search engine. Track down the eye splice wire rope you need at affordable prices at Alibaba.com.

What can you do with the steel wire rods available from Alibaba"s wholesale store? One common use for steel rods is in the welding sector. Steel works well as a welding rod material thanks to its high ductility, meaning that welds are relatively strong and long-lasting. Choose a low carbon rod and you"ll be all set for successful welds in industrial settings and workshops alike. However, steel wire also has applications beyond welding. You can use it as wiring in electronic circuits and power distribution systems and it works especially well in high temperature settings as armored cabling. Find the ideal eye splice wire rope for every industrial use at Alibaba.com.

Steel wire rods also have applications in everyday life. For example, you can use coils of steel wire to construct fences and barriers both inside and outside homes. It"s a common material in agricultural businesses thanks to its toughness and resistance to oxidation. Use it to create reinforcement cages, enclosures for equipment, or add it to concrete to add extra strength where it really matters. From welding to concrete reinforcement, eye splice wire rope will always find a use. And whether you need small batches or huge bulk orders, our metallic materials catalog is the ideal place to look.

The Flemish eye is a type of circular loop at the end of a thread. There are several techniques of creating the eye with its knot tied back to the line, rope or wire.

There are various splicing techniques, and relate to whether a rope is braided or plaited, whether it has a core and whether the core is made of high-performance fibers. Techniques include:

For conventional stranded ropes, the ends of the rope are tucked (plaited) back into the standing end to form the loop. Three tucks are the minimum for natural fibers, five tucks are necessary for synthetics.

The ends of the rope are first wrapped in tape or heated with a flame to prevent each end from fraying completely. The rope is untwisted for a distance equal to three times the diameter for each "tuck", e.g., for five tucks in half inch rope, undo about 7.5 inches. Wrap the rope at that point to prevent it unwinding further. Form the loop and plait the three ends back against the twist of the rope. Practice is required to keep each end to retain its twist and lie neatly. In stiff old rope or in new rope which has been tightly wound, a marlinspike or fid can facilitate opening up the strands and threading each end.

In some cases, the splice is tapered by trimming the working strands after each tuck. Also, the splice can be whipped to protect and strengthen the splice. A rope thimble can be inserted in the eye to prevent chafing if the eye is to be permanently attached to a fixture (used when attaching a rope to a chain, for example).

An eight-strand rope consists of two left-twisting and two right-twisting pairs. Make sure the left-twisting strands are fed below left-twisting strands, and right-twisting strands below the right-twisting ones. Work systematically with different tape colours to keep from getting lost in the mess of strands. An eight-strand square plaited rope can be used as mooring line or anchor rode.

This technique is mostly used for Dyneema ropes.DSM advises using 60 times the diameter for coated Dyneema, and 100 times the diameter for uncoated Dyneema. For 6mm coated rope, this would mean 36 cm. Under tension the rope will pull into itself tightly, which produces a strong eye. One can pull out the eye when the rope is not under tension, unless one makes a lock-splice (also called brummel splice).

Splicing a rope with a laid core is usually more complicated than double braided polyester ropes. One needs more force to take the rope back into itself because there is often less room between the core and the cover.

A rope with parallel fibers in the core often has a tight inner cover to keep the fibers together. This splice is similar to the one for double braided polyester ropes; the main difference is that one cannot take the cover back in to the core because the fibers go through the core.

For ropes with a core of high-performance fibers (such as aramid fibers or Dyneema or Vectran) only the core determines the strength. The cover can be used optionally in the eye splice, for example, to add UV protection (for aramid fibers, such as Kevlar). Dyneema is very UV resistant and the cover is not needed. For these ropes, one could make an eye splice in the single braided core and leave the cover unused. There are ropes with an extra double layer cover; this is basically the same splice as for double braided except that the inner cover first needs to be removed over the length of the splice.

Depending on the type of splice and rope, there is a variety of tools available such as hollow fids, pulling needles and traditional splicing fids. Make sure to also have a marker, splicing tape, measuring tape and a knife or scissors at hand. Often a hammer and winch are used as well for tougher splices.

The bowline is a quick, practical method of forming a loop in the end of a piece of rope. However, the bowline has an awkward tendency to shake undone when not loaded. The bowline also reduces the strength of the rope at the knot to ~45% of the original unknotted strength.

A. Hyatt Verrill. "Chapter V - Shortenings, grommets, and selvagees". Knots, splices and rope work - A practival treatise. Fig. 90. Archived from the original on 2015-09-08. Retrieved 2015-08-10 – via Cosmopolitan University (online publisher).

“Tough-Lock™” and “Cable-Flex™” slings are uniquely constructed unlike various return wire loop types. Note that our five step manufacturing process, commonly

referred to as a “Flemish” splice, results in 100% breaking strength promoting additional safety. Further testing proved increased efficiency and greater work load limits.

All “Tough-Lock™” slings adhere and comply with current specifications of OSHA, ASME B30.9c-2000 Wire Rope Technical, and Associated Wire Rope Fabricators.

I&I Sling wire rope slings are mechanically spliced. Compared to loop back or turn back slings, mechanically spliced slings are considered to be the safer option due to the backup redundancy of the splice in the eye. This splice can keep the sling eye together in a situation where the pressed sleeve fails. Flemish Eye slings are fabricated at your local I&I Sling branch location with domestically sourced wire rope.  Tight length tolerances are available, wire rope slings can be constructed with +/- the diameter of the rope or in matching sets.  Flemish eye slings are compliant with ASME B30.9 and can be proof tested to twice the working load limit.

Splicing is vastly used in marine life in order to make semi-permanent joints between two parts of a rope. While knots weaken the rope by more than 20% most of the time, splicing attains a rope’s full strength. One type of splicing is the eye splicing used to create a rope loop, mainly for mooring purposes. Are you trying to find ways onhow to tie an eye splice knot? In this blogpost the Katradis SA team shows youhow to eye splicean 8-strand, 12-strand and 24-strand rope.

Starting with splicing, you will need to measure the desired length, plus some extra length for the splicing. Usually a length of 4 meters should suffice to make an eye splice. Once you have decided on length, make markings on the rope strands and use some tape around the rope that will be unbraided next.

Now you will need to unbraid the strands and prepare the ropes for splicing. Keep in mind that you’ll have to separate the S-strands from the Z-strands. S-strands twist counterclockwise and Z-strands twist clockwise. S-strands will be spliced with Z-strands and Z-strands will be spliced with S-strands. This way, the inserted Z-strand pair runs along the adjacent two Z-strands, and the inserted S-strand pair runs along the adjacent two S-strands.

To prolong the rope loop’s life, a protective sleeve is recommended to be used. To attire the eye with the sleeve, pass the protective sleeve through the rope, after the point of the rope marking.

Splicing can take place for 8-strand or greater single-braided ropes and it is commonly used on synthetic ropes in order to create mooring tails or fixed point attachments. Yet, it can be used with the same efficiency on high modulus and double-braided ropes as well.

Before starting on splicing an 8-strand mixed rope, split the strands into two pairs of S-strands and two pairs of Z-strands. Wind some tape around the strand ends so that you can perform the splicing process easier. Use different colours for each strand type (e.g. S-strand black tape, Z-strand red tape).

Insert a spike into the gap beneath two running S-strands of the rope to make an opening. In order to create a tenacious 8-strand multiplait eye splice, make sure the eye is not twisted. Insert the first Z-strand pair into the gap. With the same spike make an opening beneath the adjacent two running Z-strands. Insert the S-strand pair into the opening. Do the same for the other two pairs and then turn the entire rope over.

Repeat the same process for this side. Once a splicing circle is finished, turn the rope over again and continue the ropework until the strands are completely spliced. Tighten the rope strands slightly at the end and your 8strand eye splice is ready.

For a 12-strand high modulus rope you need to pull out the strands, six S-strands and six Z-strands. Tape the edges of each strand. You can use different colour tape for each strand type (S or Z). Use a fid if you want to easier pass the strands through the rope’s structure.

Begin to insert each strand of the same twist (e.g. Z-strands), until all the strands have passed through. Then turn the rope over and continue splicing the remaining strands of the opposite twist. After finishing the first circle of S and Z strand insertion, make an overturn once again to begin the second insertion circle.

Start again with the same ropes as in the beginning of this step. After the six strands have been inserted, there is no need to overturn the rope as done before. You can go on with the next 6 strands. Turn the rope over after a whole splicing circle is completed.

Continue the same procedure (inserting the S and Z strands) for two or three more circles. Tape the remaining ends of the strands (put together 4 strands at one taping) and cut the final edges of the splice.

Mark and tape the 24-strand nylon rope, counting 16 double strands of the same twist from the end of the rope (16 pairs of strands). This is sufficient for making 6 full strand insertions or tucks. From the taped point, carefully take out the pairs of strands one by one following the pattern meticulously. Attention must be paid at the removal of the third strand pair.

Tape the edges of each strand pair. Next, tape the edge of the 3-strand core rope with your metal rod. Insert the 3-strand core rope in the rope. The point of the core rope insertion is determined by the eye length you want to make. From that point you will begin splicing the strands. Take out the 3-strand core rope after 6 pairs of strands of the same twist.

Start your eye splicing with the first pair of strands. You should pay attention to the insertion point concerning the 3-strand core rope. Continue in the same pattern and complete the insertion of all the strand pairs of S and Z twist. Cut the excessive length of the 3-strand core and continue with the second circle of the splicing process.

Turn the rope over in order to begin the second insertion. Use the splicing fid to pass the strands through the rope. Snag the strands a little bit, in order to remove excess slack among them. Do the strand snagging after every completed insertion. After the completion of the third insertion, all the strands should emanate from the same spot of the rope’s circumference. Continue making more insertions with the same pattern until you complete three splicing circles or more.

Since 1936 Katradis SAhas focused on extensive expertise in the design and development of high modulus and synthetic mooring ropes. Our expert engineers conduct regular rope durability and flexibility research. Our findings ensure that the highest rope standards and the strictest demands of the shipping Industry are being met every day.

Wire rope thimbles also known as cable thimbles, are used for making reinforce loop(eyelet) with grips, clips or clamps by preventing fraying caused by friction at the bearing anchor point to protect and extend the service life of the wire rope or sling. They are just one of the many types of wire rope fittings (ferrules, wire rope clips, terminals, etc.).

Wire rope thimbles are available in a variety of strengths and materials(carbon steel and stainless steel, see our post on Surface Finish: 4 Common Types You Should Know) but mainly they come in two different duty grades.

If you use it in high moisture or corrosive environments, recommend our stainless steel wire rope thimbles which can offer resistance to corrosion on the surface, particularly in marine applications.

Simply wrap the end of the wire rope around the outer groove of the thimble, lace the dead end of the wire rope past the U-bolt of the wire rope grips or a wire rope ferrule crimp to hold onto the bearing anchor point at the end of the thimble to prevent fraying caused by friction.

Once in place, put another wire rope clip as near the loop you just wrapped over the thimble. Turn nuts firmly but do not yet tighten to the proper torque, we recommend using a crimping/swaging tool to compress the ferrule firmly onto the rope to hold your thimble loop securely.

Alternatively, you can use a wire rope ferrule crimp to secure your thimble in place. this method is quick and easy to install. For further information on installation using a wire rope ferrule please – click here

Wire rope thimbles are used in conjunction with cable and rope to protect the eyes and will allow for smooth rope guiding around natural curves. So that the most important thing is to make sure the thimble eye securely fastened. Here are some tips for correctly using wire rope thimble:

Make sure that the cable thimbles size properly and securely fastened in the eye of the loop, not too loose or too tighten, so they can create an extra layer of support to connect with other properly sized rigging fittings.

While you are using a vinyl coated cable, you should multiply the actual size of the cable, usually use a larger size thimble than normal, for the actual diameter is the thickness of the vinyl coating plus the inside wire rope diameter. For example, if you are using a 5/16″ vinyl coated cable that is coated to 3/8″ diameter, you’d want to use a 3/8″ wire rope thimble.

Amsteel is a samthane coated, non-rotational, 12-strand single braid that is known for its low stretch and high strength. It has a similar strength to wire rope with 1/7th of the weight. In addition, the product is flexible, lightweight, durable, resists flex-fatigue, & abrasion-resistant.

They are not the same thing but are often confused. As an example, the average strength of 1/4” Amsteel is 7400 pounds, while Amsteel Blue is 8600 pounds. Samson’s Amsteel is made from Dyneema SK60. Amsteel Blue is made from Dyneema SK75. What is being sold by cottage vendors today is usually Amsteel Blue, even if they don’t always call it that.

It depends. The 7/64 commonly used for whoopie slings, has only eight strands, but diameters beyond that have twelve. The Samson documentation invariably lists Amsteel Blue as a (class 2)12-strand product, but that documentation often does not include the 7/64 size because it is too small for the marine and industrial use that Samson caters to. Class I ropes are manufactured from polyolefin, nylon and or polyester fiber. Class II ropes (including Amsteel) are manufactured from high-modulus fiber, such as Dyneema Composite Fabrics.

Amsteel is defined by Samson as a “high-modulus polyethylene” rope. The high-modulus part means that Amsteel has “low elasticity elongation” or in other words, it doesn’t stretch much. However, this also means that this type of rope doesn’t like to be shock-loaded, so ease into the hammock! Safe working loads do not apply to shock loading.

Samson specifies that a fid is equal to the diameter of the rope x 21, and that an effective bury for Class 2 rope should be three and a half fids. The diameter of Amsteel 7/64 is 0.11 inches, so for this rope, one fid is equal to 2.31 inches. So the recommended bury would be about 8 inches. Bury = fid x 3.5 = 2.31 x 3.5 = 8.01 inches Note that the length of the bury is dependent on the diameter of the rope. Counter-intuitively, the smaller the diameter of the rope, the shorter the bury needs to be. For example, a whoopie made with 1.75 mm Zing-it would only need five inches of bury (if following Samson specs), while one made with 1/8 inch Amsteel would need nine inches.

The eye of the whoopie sling is usually made with a locked Brummell, which does not require stitching. The eye made in a variation of the “utility constrictor rope” (UCR), does require lock stitches (I like UCRs better than whoopies).