wire rope catalogue free sample

Construction The size and number of wires in each strand, as well as the size and number of strands in the rope greatly affect the characteristics of the rope. In general, a large number of small-size wires and strands produce a flexible rope with good resistance to bending fatigue. The rope construction is also important for tensile load (static, live or shock) abrasive wear, crushing, corrosion and rotation. The number of strands and wires will influence the flexibility, fatigue and wear resistance of any given wire rope. Rope selection is often a compromise. Generally the more load bearing wires in the rope the greater the flexibility, however the smaller the wires the less abrasion resistance. For example, the same nominal diameter 7 x 7 wire would be less flexible than a 7 x 19 wire, hence a large number of small size wire and strands produce a flexible rope with good resistance to bending fatigue wear. The construction of wire rope is defined by the number of outer strands (first number), and the number of wires within that strand (second number) and then by the arrangement of the wires in each strand (shown in brackets). The wires in each strand can be arranged in several ways, for example a 6 x 19 construction the 19 wires in each strand are laid 9 around 9 around 1 centre wire.

Endurance Dyform 6 20-22// Usha Martin Crane Wire Rope 23-25// Wire Rope Slings Overview 26 // Tri-flex Wire Rope Slings 27 // Wire Rope Terminations 27 //

Core The core of a steel wire rope serves as a foundation for the strands, providing stability by keeping them in place throughout the life of the rope. Wire ropes can be supplied with either a fibre or wire core. Grade Wire rope can be manufactured in different steel grades, which directly affects the Minimum Breaking Force, (MBF). The higher the grade the higher the MBF. Common wire grades include: 1570, 1770, 1960 and 2070 Finish Wire Ropes can be supplied as Black (self-colour), Galvanised or Stainless Steel. Wire rope is lubricated at the time of manufacture, to help reduce friction between wires and strands, and the friction between the rope and drum or sheave. In addition, the lubrication retards corrosion and inhibits possible rotting of the fibre core.

RHOL Right Hand Ordinary Lay LHOL Left Hand Ordinary Lay RHLL Right Hand Lang’s Lay LHLL Left Hand Lang’s Lay Pref Preformed Post Postformed WRC Wire Rope Core WSC Wire Strand Core FC Fibre Core FW Filler Wire Strand Construction D or d Diameter (in millimetres)

Rotating or Non-Rotating Rotation resistant wire ropes are manufactured to resist rotation under load and are suitable for crane use and where long lengths are required.

Clamping Wire Rope To ensure complete safety, it is imperative that wire ropes are clamped correctly. The diagrams below are a guide only. Please refer to the relevant Australian Standards AS 2076 for further information.

Correct Spooling of Steel Wire Rope on Drum It is imperative to correctly spool wire rope onto a drum. Improper spooling induces torque within the rope, which in turn reduces the life of the rope.

tension to avoid any slack on inner layers that can be crushed or nicked against the groove walls by outer layers. In general, the tighter the line, the better the spooling, but the rope should be tensioned with at least 2% of the breaking load or 10% of the working load.

Lubricating Steel Wire Ropes All steel wire ropes supplied by Robertsons are lubricated at the time of manufacture, however, periodic lubrication with good quality acid free and moisture free lubricant during use is required to ensure best performance. The following are accepted ways to lubricate wire ropes during use.

Steel Wire Rope Cutting Procedure Hand cutters for cutting ropes up to 8mm in diameter are sufficient. Mechanical or hydraulic cutters will be required for wire ropes with larger diameters.

Careless cutting can result in the balance of tension in the rope being destroyed. In every case, each side of the cut must be correctly seized to prevent strand

C: Both ends of the seizing wire are then pulled tight and twisted together for a length of one rope diameter. The twisted connection is then hammered into a strand valley.

Typical Steel Wire Rope Failures Steel wire rope is tough and durable, however eventually it will reach the end of its safe service life. Below are some examples of typical damage and deterioration. Steel wire ropes should be inspected every 12 months.

Storing Steel Wire Ropes Ensure steel wire rope is stored in a weather-proof storage space. If wire rope is to be kept unused for a considerable amount of time, it must be protected from the elements. The ideal storage area is a dry, well-ventilated building or shed. Avoid closed, unheated, tightly sealed buildings or enclosures because condensation will form when warm, moist outside (ambient) air envelopes the colder rope. Although wire rope is protected by a lubricant, this is not totally effective since condensation can still occur within the small sections between strands and wires, thereby causing corrosion problems. Ensure the reels are kept up off the ground, or are placed on a concrete floor. • Reels should be mounted on jacks or placed on a swift (with a brake arrangement) and care taken to see that the reel rotates as the rope unwinds • Ensure clearance for free rotation of the reel when the rope end is pulled and maintain continuous tension during haul off Correct Handling of Steel Wire Ropes Incorrect handling of steel wire ropes can cause kinking or loops Ropes should be stored in a clean dry place under cover. Reels or coils should be kept off the ground and supported by timber. They should also be examined periodically and rope dressing renewed as required. 1) Unreeling and Uncoiling Reels should be mounted on jacks and care taken to see that the reel rotates as the rope unwinds. Timber should be applied as a lever to one of the flanges to act as a brake, keeping the rope tight and preventing the reel from over- running. When the ropes are supplied in coils a turntalbe or swift should be employed and the free end pulled out with event tension as the swift, or turnatable revolve. Over-winding should be avoided at all times to obviate kinking. Coils may also be unwound by securing the free outside end of the rope and then rolling the coil along the ground; care being taken at all times to ensure that the coil is held firmly together, avoiding tight coils or kinks. Ropes should be stored in a clean dry place under cover. Reels or coils should be kept off the ground and supported by timber. They should also be examined periodically and rope dressing r newed as required. 1) Unreeling and Uncoiling Reels should be mounted on jacks and care taken to see that th reel ro ates as the rope unwinds. Timber should be applied as a lever t one of the flanges to act as a brake, keeping the rope tight and pr ve ting the reel from over- run ing. When the ropes are supplied in coils a turntalbe or swift should b employed and the fre end pulled out with vent tension as the swift, or turnatable revolve. Over-winding should be avoided t all times to obviate kinking. Coils may also be unwound by securing the free outside end of the rope and then rolling the coi along the ground; care being taken t all times to ensure that the coil is held firmly together, avoiding tight coils or kinks. Ropes should be stored in a clean ry lace under cove . R ls or coils shoul be k pt off the ground and supported by timber. They should also be examined periodically and rope dressing renewed as required. 1) Unreeling and Unc iling Re s should be mounted on jacks and c re taken to se that the reel r tates as the rope u winds. Timbe should be appl ed as a lever to one of the flanges to act as a brake, keeping the rope tight and preventing the reel from over- running. When the rope are supplied in coils a turntalbe or swift employed and the free end pulled out w th event tension as the swift, or tur atabl rev lve. Ov r-winding shoul be av ided at all t mes to obviate kinking. Coils may also be unwound by sec ing the fr e out id end of th rope and the rolling the c il along the ground; care being taken at all times to ensure that the coil is held firmly together, avoiding tight coils or kinks. Ropes should be stored in a clean dry place under cover. Reels or coils should be kept off the ground and supported by timber. They should also be examined periodically and rope dressing renewed a required. 1) Unreeling and Uncoiling Reels should be mounted on jacks and care taken to see that the reel rotates as the rope unwinds. Timber should be applied as a lever to one of the flanges to act as a brake, keeping the rope tight and preventing the reel from over- running. When the ropes are supplied in coils a turntalbe or swift should be employed and the free end pulled out with event tension as the swift, or turnatable revolve. Over-winding should be avoided at all times to obviate kinking. Coils may also be unwound by securing the free outside end of the rope and then rolling the coil along the ground; care being taken at all times to ensure that the coil is held firmly together, avoiding tight coils or kinks. Ropes should be stored in a clean dry place under cove . R els or coils should be k pt off the ground and supported by timber. They should also be xamined p riodically and rope dressing renewed as required. 1) Unreeling and U c iling Reels should be mounted on jacks and care taken to see that the reel tates as the rope u winds. Timb r should be appl ed as a lev r to ne of the flanges to act as a brake, keeping the rope tight and prev nti g the reel from over- running. When the rope are supplied in coils a turntalbe or swift empl y d and the free end pull d out with event tensi n as the swift, or t r at ble rev lve. Ov r-winding sh uld be avoided at all times to bviate kinki g. Coils may also be unwound by securing the free out id nd of the rop and then rollin the coil a ong the ground; care being taken at ll times to ensure that the coil is held firmly together, avoiding tight coils or kinks. forming in the steel wire rope, causing permanent damage. Below is a summary of the correct way to handle steel wire rope:

Although the steel wire rope is lubricated at the time of manufacture, a suitable lubricant should be applied every three months. The reels containing the steel wire ropes should also be rotated 90 degrees every three months.

11. Handling and Care of Wire Ropes 1. Handling and Care of Wire Ropes 11. Handling and Care of Wire Ropes 11. Handling and Care of Wire Ropes 1 . Handling and Care of Wire Rop s

2) Seizings It is important that before cutting ropes are properly seized with annealed mild steel wire or strand to avoid slack wires and possible rope distortion. 2) Se zings It s important that before cutting ropes are properly s ized with annealed mild steel wire or strand to avoid slack wires and possible rope distortion. 2) Seizings It is important that bef re cutting ropes are properly seized with annealed mild steel wire or strand to avoid slack wires and possible rope distortion. 2) Seizings It is important that before cutting ropes are properly seized with annealed mild steel wire or strand to avoid slack wires and possible rope distortion. 2) Seiz ngs It is important that before cutting ropes are properly seized with annealed mild steel wire or strand to avoid slack wires and possible rope distortion.

Wire Rope Terminations Hand spliced or machine swaged slings, with your choice of terminations, can be manufactured and tested (if required) on our premises at short notice. All slings and assemblies are permanently marked with safe working loads, based on a 5:1 factor of safety. Machine Swaging Aluminium Ferrules Sizes 2mm – 52mm. Copper Ferrules Sizes 2mm – 10mm Steel Ferrules Sizes 9mm – 75mm Swage Sockets Sizes 3mm – 52mm Hand Splicing from 2mm – 75mm dia

Galvanised Wire RHOL 63 41.8 Galvanised Wire RHOL 90 60.2 Galvanised Wire RHOL 107 70.7 Galvanised Wire RHOL 124 82 Galvanised Wire RHOL 161 107 Galvanised Wire RHOL 204 135 Galvanised Wire RHOL 252 167 Galvanised Wire RHOL 304 202 Galvanised Wire RHOL 363 241 Galvanised Wire RHOL 426 283 Galvanised Wire RHOL 493 328 Galvanised Wire RHOL 644 428 Galvanised Wire RHOL 816 542 Galvanised Wire RHOL 911 604 Galvanised Wire RHOL 1009 669 Galvanised Wire RHOL 1220 810 Galvanised Wire RHOL 1700 1110

Galvanised Wire RHOL 18.9 10.4 Galvanised Wire RHOL 27.2 14.3 Galvanised Wire RHOL 37.2 20.2 Galvanised Wire RHOL 47.5 25.66 Galvanised Wire RHOL 59.3 32 Galvanised Wire RHOL 73 39.4

POWERFORM® 8/8P • A high strength eight strand rope with plastic impregnated core ideal for situations where longer service life is required • High fatigue life resulting from the unique compaction process • Maximum resistance to crushing. Recommended for multi-layer spooling operations

• A sample of rope from each production batch is tested to destruction • Greater surface contact area resulting from the eight strand construction and compacted finish give longer rope life and reduced sheave wear • Optional plastic impregnation of the steel core. (P) signifies full plastic impregnation of the steel core.

POWERFORM® 35/35P • Superior strength and resistance to rotation • Suitable for use on single part and multi-part hoist reeving systems • High fatigue life due to unique compaction process • A sample of rope from each production batch is tested to destruction

52 2256.0 230.0 *Mass per unit length of POWERFORM 35P increases by approx. 3%. Note: • POWERFORM 35P is available on special request and prior confirmation. • Rope sizes and Breaking Force not shown in the standard table, may be available on request and prior confirmation.

Note: • POWERFORM 8P is available for rope diameter 16mm and above on special request and prior confirmation. • Rope sizes and Breaking Force not shown in the standard table, may be available on request and prior confirmation.

POWERFORM® 6/6P • A high strength rugged six strand rope ideal for situations where longer service life is required • Can be substituted for any six strand construction to improve service life • High fatigue life due to unique compaction process • A sample of rope from each production batch is tested to destruction

Typical Steel Wire Rope Sling Description Hand spliced or machine swaged slings, with your choice of terminations, can be manufactured and tested (if required) on our premises at short notice. All slings and assemblies are permanently marked with safe working loads, based on a 5:1 factor of safety.

*Mass per unit length of POWERFORM 6P increases by approx. 3%. Note: • POWERFORM 6P is available only for 16mm and above on special request and prior confirmation. • Rope sizes and Breaking Force not shown in the standard table, may be available on request and prior confirmation.

Wire ropes are essential for safety purposes on construction sites and industrial workplaces. They are used to secure and transport extremely heavy pieces of equipment – so they must be strong enough to withstand substantial loads. This is why the wire rope safety factor is crucial.

You may have heard that it is always recommended to use wire ropes or slings with a higher breaking strength than the actual load. For instance, say that you need to move 50,000 lbs. with an overhead crane. You should generally use equipment with a working load limit that is rated for weight at least five times higher – or 250,000 lbs. in this case.

This recommendation is all thanks to the wire rope safety factor. This calculation is designed to help you determine important numbers, such as the minimum breaking strength and the working load limit of a wire rope.

The safety factor is a measurement of how strong of a force a wire rope can withstand before it breaks. It is commonly stated as a ratio, such as 5:1. This means that the wire rope can hold five times their Safe Work Load (SWL) before it will break.

So, if a 5:1 wire rope’s SWL is 10,000 lbs., the safety factor is 50,000 lbs. However, you would never want to place a load near 50,000 lbs. for wire rope safety reasons.

The safety factor rating of a wire rope is the calculation of the Minimum Break Strength (MBS) or the Minimum Breaking Load (MBL) compared to the highest absolute maximum load limit. It is crucial to use a wire rope with a high ratio to account for factors that could influence the weight of the load.

The Safe Working Load (SWL) is a measurement that is required by law to be clearly marked on all lifting devices – including hoists, lifting machines, and tackles. However, this is not visibly listed on wire ropes, so it is important to understand what this term means and how to calculate it.

The safe working load will change depending on the diameter of the wire rope and its weight per foot. Of course, the smaller the wire rope is, the lower its SWL will be. The SWL also changes depending on the safety factor ratio.

The margin of safety for wire ropes accounts for any unexpected extra loads to ensure the utmost safety for everyone involved. Every year there aredue to overhead crane accidents. Many of these deaths occur when a heavy load is dropped because the weight load limit was not properly calculated and the wire rope broke or slipped.

The margin of safety is a hazard control calculation that essentially accounts for worst-case scenarios. For instance, what if a strong gust of wind were to blow while a crane was lifting a load? Or what if the brakes slipped and the load dropped several feet unexpectedly? This is certainly a wire rope safety factor that must be considered.

Themargin of safety(also referred to as the factor of safety) measures the ultimate load or stress divided by theallowablestress. This helps to account for the applied tensile forces and stress thatcouldbe applied to the rope, causing it to inch closer to the breaking strength limit.

A proof test must be conducted on a wire rope or any other piece of rigging equipment before it is used for the first time.that a sample of a wire rope must be tested to ensure that it can safely hold one-fifth of the breaking load limit. The proof test ensures that the wire rope is not defective and can withstand the minimum weight load limit.

First, the wire rope and other lifting accessories (such as hooks or slings) are set up as needed for the particular task. Then weight or force is slowly added until it reaches the maximum allowable working load limit.

Some wire rope distributors will conduct proof loading tests before you purchase them. Be sure to investigate the criteria of these tests before purchasing, as some testing factors may need to be changed depending on your requirements.

When purchasing wire ropes for overhead lifting or other heavy-duty applications, understanding the safety dynamics and limits is critical. These terms can get confusing, but all of thesefactors serve an important purpose.

Our company has served as a wire rope distributor and industrial hardware supplier for many years. We know all there is to know about safety factors. We will help you find the exact wire ropes that will meet your requirements, no matter what project you have in mind.