WIRE ROPE SLINGS

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.

WHAT IS A WIRE ROPE SLING?

A sling is a form of lifting equipment that’s used to lift heavy loads that would be difficult or impossible to move manually. The sling provides a direct connection from the lifting gear to the electric or manual hoist being used.

A wire rope sling is specifically created from wire rope. This rope consists of multiple steel wires that are laid in a helical pattern around a core. The structure provides strength, flexibility, and high tensile stress.

WHAT ARE THE BENEFITS OF WIRE ROPE SLINGS?

Besides the load-stabilising aspect which wire rope slings share with other heavy-duty lifting slings, they also have some unique benefits which make them a brilliant choice as a lifting solution.

  • Abrasion resistance
  • Crush resistance
  • Fatigue resistance
  • Corrosion resistance
  • Rotation resistance

A ROPE WITH LARGER DIAMETER WIRES WILL BE MORE CRUSH-RESISTANT AND ABRASION-RESISTANT, WHILE A ROPE WITH SMALLER DIAMETER WIRES WILL BE MORE BENDABLE AND FATIGUE-RESISTANT.

Contact one of our technical specialists on +27 11 422 3690 or complete the enquiry form below.

HOW DO I KNOW THE TYPES OF LIFTING EQUIPMENT TO BUY?

Buying this specific type of sling is a little more complicated than it looks. Besides having to choose between how many legs you need the sling to have, you should know the average load to be lifted, and the construction of the wire rope for lifting you need.

We’ll help you every step of the way with choosing the correct sling for your operations, beginning with the construction of the rope rigging equipment. What we will consider is the:

  • Length
  • Size
  • Preformed or Non-Preformed
  • Direction and Type of Lay
  • Finish of Wires
  • Grade of Rope
  • Type of Core

NOTE: All wire ropes slings come with a maximum breaking strength and a workload limit. You need to know these values explicitly in order for you to lift loads safely. 

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

HOW TO GET YOUR WIRE ROPE SLING INSPECTED

It’s important to inspect wire rope slings frequently and have up-to-date sling inspection records. RGM Cranes offers you full-service crane and sling inspections at intervals recommended by law and best practice.

When you purchase a wire rope sling, you can rest assured that our sales engineers inspected it before being given to you. Our sales engineers check:

  • The sling workload limit.
  • The length of the sling.
  • The design and construction of the rope.

We also advise that you teach anyone using the sling how to inspect it thoroughly before use every day. The length of the wire rope, fastenings, and any attachments on the sling should be inspected. The person needs to look for signs of defects, deformities, and general damage which may affect the lifting capability of the sling.

If the wire rope sling is used many times in one day, by different people, and across multiple shifts, someone must inspect it before each shift begins. Ideally, these are the issues that must be looked for:

  • Missing or illegible sling identification
  • 10 or more randomly distributed broken wires in one rope lay, or 5 or more broken wires in one strand in one rope lay.
  • Distortion
  • Kinking
  • Crushing
  • Birdcaging
  • Wires and strands out of place
  • Heat Damage: Any fused wires, weld spatter, metallic discoloration, or loss of core lubricant
  • Damaged end attachments
  • Bent Hooks
  • Corrosion (excluding light surface rust)
  • Slipped or pulled eye splices
  • Unbalance caused by kinks
  • Doglegs

Our crew of highly trained technicians and assistants are available throughout Southern Africa and are on call 24 hours seven days a week.

DIFFERENT WIRE ROPES AND THEIR CLASSIFICATION

RGM Cranes has a crane inspection service that also involves inspecting crane lifting slings.

You should have inspections of your webbing slings every morning, before daily use. If your operations have a high uptime, then inspect each sling during downtime. Also, swap out slings to make sure you carry out inspections. Crane straps should be thoroughly examined and removed from service if you detect any damage.

Being neglectful of proper maintenance protocols could endanger those using the sling. You can be made liable for any injuries which result from such negligence.

Our trained engineers have been inspecting cranes, crane kits and parts for the last 30 years. We have a thorough knowledge of the correct regulations and legislation surrounding the use of nylon hoisting straps, and other crane lifting slings.

HOW IS SLING CAPACITY CALCULATED?

  1. You need to take the total weight of the load and divide this by the number of legs supporting the load.
  2. Determine the load factor by observing the load factor manual which will be provided when you purchase the nylon hoisting strap.
  3. Multiply the load factor times by the minimum weight which needs to be supported by each leg.
  4. The hitch you tie the crane sling will determine the full load factor.

APPROXIMATE SAFE WORKING LOADS IN KG FOR ALUMINIUM FERRULED STEEL WIRE ROPE SLINGS

Rope diameter mm Single Leg at 0° Double Leg at 30° Double Leg at 60° Double Leg at 90° Triple (30°) & Quadruple Leg at 60° Triple (45°) & Quadruple Leg at 90° Triple (60°) & Quadruple Leg at 120°
6 300 550 500 420 760 630 450
8 600 1150 1000 800 1520 1260 900
10 1000 1750 1550 1250 2530 2100 1500
13 1500 2800 2500 2100 3800 3150 2250
16 2000 3800 3400 2600 5060 4200 3000
19 3000 5700 5100 4200 7600 6300 4500
22 4000 7600 6800 5600 10130 8400 6000
26 6000 11500 10300 8400 15200 12600 9000
28 7700 14600 13050 10750 20260 16800 12000
32 10000 19000 17000 14000 25330 21000 15000
38 14300 27150 24300 20000 36980 30660 21900
44 19200 36450 32600 26850 49400 40950 29250
50 24800 47100 42150 34700 63840 52920 37800
56 31000 58900 52700 43400 81060 67200 48000

 

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

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.

9 + 1 =

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 - 14:00 (CAT)

ADDRESS

 

Cnr Dusseldorf & Ruhr Roads,

Apex, Benoni, Gauteng
1540

PO Box 2638
Benoni
1500
South Africa

Copyright © 2020 RGM Cranes. All Rights Reserved.