How to Select and use wire rope slings – Wristrong Industry China
Pubdate: Apr 8,2021 Preview: 373
- Follow the manufacturers' charts and tables on sling types, angles, and rope diameters and select a proper sling which suits the load and the slinging method that you are going to use. Sling types can be endless, single, two, three or four leg.
- The sling must be both long enough and strong enough for the load and the slinging method.
- Follow the manufacturers' recommendations on clips and clamps of suitable size and design for ropes of different size.
- Consult the manufacturer or supplier when wire rope slings come into contact with acids or chemicals.
- Be sure you know the correct use of the equipment, the slinging procedures and the sling strength factors to be applied before lifting.
- Use wire rope slings at rated limits.
- Check the manufacturer's chart for sling properties.
- Examine slings for wear, fatigue, crushed or broken wires, kinking, ballooning or "bird-caging", heat damage, etc. Check both before and after using slings to detect any damage or defects.
- Attach the sling securely to the load and appliance and position hooks to face outwards.
- Inspect and tighten fittings regularly.
- Ensure the load is balanced and will not tilt or fall.
- Center the sling load to prevent the load from shifting suddenly and causing a high impact load.
- Ensure that the load is free to be lifted.
- Keep fingers and toes clear when tensioning slings and when landing loads.
- Make a trial lift and trial lower to ensure everything is working in a safe manner.
- Reduce rope stress with slow starts and stops.
- Position hooks of multi-leg slings facing outward from the load.
- Back hook free legs to the master link to avoid lashing legs which might accidentally become engaged.
- Keep wire rope slings well lubricated and inspect them often. Use non-acidic lubricants.
- Remove damaged slings from service and tag appropriately.
- Store slings on racks in a clean, dry place and protect from corrosion.
- Do not bend slings around sharp edges. Protect them by using corner saddles, padding, or wood blocks.
- Do not force, hammer or wedge slings or fittings into position. They must fit freely.
- Never join wire rope slings made from different lays of rope together as it can seriously affect the lifting capacity.
- Do not use slings with knots.
- Never attempt to shorten or tie wire rope slings.
- Never shock load wire rope slings.
- Do not slide the load along a rope.
- Do not use a single leg hitch on a load that cannot be controlled. Rotation of a load can undo the wire rope strands and weaken the rope.