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STEEL WIRE ROPES

RGM Crane’s range of steel wire ropes is suited for several industrial purposes where lifting or hauling takes place.

Our wire ropes are available in various diameters, constructions, and finishes.

  • Rope diameter range from 6-32mm rope in stock from fibre core (FC) to independent wire rope core (IWRC)
  • Galvanized and ungalvanized variants available
  • Pricing structure is one of the best on the market

RGM Cranes carries over R30 million of stock in facilities covering nearly 2000 m2; most of this stock is steel wire rope.

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POSSIBLE INDUSTRIAL APPLICATIONS OF STEEL WIRE ROPE

Steel rigging comes in many specialist forms, such as UV-resistant, EMC-screened crane cables which are sometimes polymer insulated to protect from electromagnetic interference. Crane cables are also used as underground mining ropes in a series of hoists, conveyors, and gantries.

For surface mining, steel rigging is specialised as shovel ropes, meant for high-production, high-efficiency mining machinery.

In areas where oil is extracted, steel wire ropes are used for drill lines, to lower and lift drill strings (chutes which transport drilling fluid) on drill rigs.

Steel rigging has a variable safety factor just like nylon slings, based on the type choke, the angle between the wire rope sling legs, and the workload limit of the

Sling ropes made of steel are also cost-effective and work well with overhead cranes in

  • Mining Industries
  • General Engineering
  • Offshore Drilling Liner
  • Riser Tensioner Lines
  • Anchor Lines
  • Construction

REDUCE WORKSHOP DOWNTIME

With over R25 Million worth of ex-stock available, RGM is equipped to meet service deliveries and reduce downtime.

A full range of spare parts are readily available and can be delivered to your site within 24 hours, 7 days a week.

GALVANISED

Galvanized steel wire ropes are coated in zinc to make it corrosion resistant.

  • Galvanization is cost-effective in the long term because of its low maintenance.
  • The zinc coating provides shielding from rust because it bonds with the steel on the wires on a molecular level. The zinc coating is actually zinc alloy.
  • Galvanized steel rope is easy to inspect for damage to the coating.

NON-GALVANISED

Non-galvanised sling rope is not treated with zinc and degrades quickly.

  • Non-galvanised steel rigging is cheaper in the short term but costs more to maintain in future.
  • Non-galvanised steel wire ropes are prone to oxidation (rust), unless they are insulated by a polymer.
  • Rust will always occur and when it does, the steel wire has to be removed from operation as it is unsafe.

With one of the widest ranges of steel wire ropes in South Africa, RGM Cranes helps you reduce downtime and keep operation costs low.

WHAT IS A STEEL WIRE ROPE?

SWR is made of thin stainless steel wires wound into strands, which are then wound around a central core into a complete rope. The most common type of rope for this is the six-strand construction. The number of strands and wires in each strand depends on the required strength, fatigue, and flexibility. You will usually find these ropes in wire rope slings.

RGM Rope diameters range from 5 mm up to 32mm and can be used in a variety of steel pulleys, from simple eye formations to heavy-duty hooks.

A side view of the construction of a SWR, showing the separate wires, the strands made from those wires, and the complete rope shaped by the strands.

THE STAINLESS STEEL ROPE WILL ALWAYS HAVE THREE PARTS:

  • Core – runs through the centre of the wire and it can be fiber or steel.
  • Strands –  a section made up of individual wires.
  • Wires – the smallest component of a wire rope.

THE DIFFERENCES BETWEEN STEEL WIRE ROPES AND CHAIN SLINGS?

Compared to using chains, steel wire ropes

  • Have higher strength to weight ratio.
  • Are easier to install and lighter on the floating structure.
  • Have termination connections available in different sizes for lifting.
  • Possess high corrosion resistance.

WHAT  DOES 16×19 ROPE MEAN?

Steel rope is classified as strands x wires per strand followed by the core type.

For example, a 6-strand fiber core rope with 19 wires per strand will be 16×19 FC.

RGM Cranes have the largest stock availability compared to other suppliers in Johannesburg or South Africa.

A cross-section of a 6x19 fiber core steel wire rope.

Contact RGM for your bespoke galvanised steel rope requirements. Complete the form below or contact us on+27 11 422 3690.

SINGLE LAYER STEEL ROPE CORE TYPES

There are five different steel wire rope constructions. The typical one is a single layer of rope with either a fiber core or a steel core. The table below illustrates the different single-layer core types:

Single Layer Rope
Item or ElementSymbolItem or ElementSymbol
Fiber CoreFCSteel CoreWC
Natural Fiber CoreNFCWire Strand CoreWSC
Synthetic Fiber CoreSFCIndependent Wire Rope CoreIWRC
Solid Polymer CoreSPCIndependent Wire Rope Core With Compacted StrandsIWRC(K)
N/AN/AIndependent Wire Rope Core Covered With A PolymerEPIWRC

 

CRANE SERVICE INSPECTIONS

 

Our work is guaranteed and in compliance with local and international standards. Inspections and testing are conducted according to SANS 1037-2006 specifications.

READ MORE ABOUT LOAD TESTING COMPLIANCE & STANDARDS

ONSITE LOAD TESTING & MAINTENANCE

 

RGM offers onsite equipment testing using our certified mobile lifting equipment. This rig has the capacity to conduct lift testing up to 27 tonnes on a single pull.

BOOK YOUR ONSITE INSPECTION WITH RGM

LIFTING TACKLE & SERVICING

 

Our full product range sizes, materials, and construction are stocked to meet any specialised lifting requirements and specifications.

STOCK SUPPLIED 24/7

HOW STRONG IS WIRE ROPE?

What determines the strength of a steel wire rope is the rope diameter and the minimum breaking strength measured in kilo-Newtons. This minimum breaking strength relates to the weight the wire rope can hand in kg/m. The latter measurement is a unit of work equal to the work done by a one-kilogram force operating through a distance of one meter, in any direction.

Steel Rope DiameterMinimum Breaking StrengthWeight
(mm)(kN)(kg/m)
6.424.40.16
837.90.24
9.554.30.36
11.573.60.48
1395.20.63
14.51200.79
161490.98
192121.41
222861.92
263722.50
294683.17
325753.91
356914.73
388185.63
428526.61
4511007.66
4812508.80
52142010.0

 

WHAT IS THE DIFFERENCE BETWEEN CABLE AND WIRE ROPE?

Although steel cables and steel wire rope are colloquially used to mean the same, a wire rope usually refers to steel rigging with diameters larger than 9.5 mm. Sizes smaller than that are referred to as cables or cords.

Cables are those used in activities such as mountain climbing or abseiling. One major facet of steel wire rope is its durability. Even if it frays a strand, the sling rope can function as opposed to if a chain-link breaks in a chain sling.

Contact RGM for your bespoke galvanised steel rope requirements. Complete the form below or contact us on+27 11 422 3690.

THE 5 MAIN TYPES OF STEEL ROPE CONSTRUCTION

The five basic types of steel ropes: Single Layer, Filler Wire, Seale, Warrington, and Combined.

Steel wire ropes have five basic constructions:

  • Single Layer ⎼ This wire usually has a single wire centre with six wires of the same diameter around it.
  • Filler Wire ⎼ This type has two layers of uniform size steel wire around a centre, with the inner layer having half of the number of wires as the outer layer. Small, filler wires equal in number to the inner layer are then laid in the spaces between the inner and outer layers.
  • Seale ⎼ Two layers of wire around a centre with the same number of wires in each layer. All steel wires in each layer are the same diameter. The strand is designed in such a way that the larger, outer wires rest in the spaces between the smaller, inner wires.
  • Warrington ⎼ This construction has two layers of wire around a centre. The inner layer has wires of the same diameter and the outer layer has wires with different diameters alternating between each other.
  • Combined ⎼ A combined construction is one that uses any of the four main constructions together at the same time.

MANUFACTURING & SUPPLYING SOUTHERN AFRICA WITH INDUSTRIAL LIFTING SOLUTIONS FOR OVER 30 YEARS.

DO’S AND DONT’S FOR STEEL WIRE ROPE 

DO’S

  • Lubricate your steel rigging with high quality, acid-free, moisture-free lubricant.
  • Inspect sheaves, rollers, pulleys, and other aspects of your manual lifting equipment to make sure that they are fine. The life of your sling rope depends largely on these conditions.
  • Inspect your steel ropes, fittings, and terminations periodically.

DONT’S

  • Don’t deliberately allow steel wire in storage to deteriorate.
  • Don’t mishandle ropes when you’re uncoiling or unreeling them. This will allow kinks to form.
  • Don’t use a rope with a groove diameter that’s too large for it on drums and pulleys.
  • Don’t cut a rope with seizing. (Seizings are stopping knots used to semi-permanently bind together two ropes.)
  • Don’t use a steel wire rope that is not sufficiently flexible for the size of the drum or pulley.]
  • Don’t load a rope beyond its safe working load. Reduction of safety factors may jeopardise the rope, equipment, and the people doing the job.

FIND OUT HOW WE CAN ASSIST YOU

We are happy to assist you with any query large or small. Reach out to us and we will ensure that you find the best solution for your lifting needs.

15 + 5 =

OUR INDUSTRIAL CRANES AND RANGE OF LIFTING EQUIPMENT HELPS THE AUTOMOTIVE, CONSTRUCTION, MINING AND MANUFACTURING INDUSTRIES IN SOUTHERN AFRICA MEET THEIR DEMANDING PRODUCTION SCHEDULES.

OPERATING TIMES

 

Monday - Thursday
07:30 - 16:30 (CAT)

Friday:
07:30 - 14 (CAT)

ADDRESS

 

Cnr Dusseldorf & Ruhr Roads,

Apex, Benoni, Gauteng
1540

PO Box 2638
Benoni
1500
South Africa

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