lifting slings Archives - US Cargo Control Blog

What is D/d Ratio & Why is this Critical for Lifting Slings?

What effect does D/d Ratio have on lifting slings and their sling capacities?

You may wonder what D/d ratio is and what purpose it serves when lifting loads with different types of slings. After all, it can be confusing as there are multiple factors you have to take under consideration such as knowing the weight of the load, the sling’s working load limit (WLL), and the load’s center of gravity.

Identifying the D/d ratio when using any type of sling for a lift is critical, because if the lifting sling tightly bends over too much during the lift – the sling will get damaged. This could then lead to unsafe rigging practices. To have a safe lifting operation, continue reading more about D/d Ratio, and the types of slings we carry at US Cargo Control to identify which is right for your lift.

What is D/d Ratio?

The term D/d ratio works as a simple mathematical equation where you’re learning the diameter or distance of the load you’re picking up. It is the ratio of the diameter (D) around the object which the sling might be bent, which could be a sheave or another object, then divided by the overall diameter (d) of the sling being used.

The Formula for D/d Ratio:

The diameter of the load divided by the diameter of the sling = D/d Ratio

Unirope's definition of D/d ratio — Photo Courtesy of Unirope

For example, you’re picking up an object that’s 12 inches in diameter and you use a 3/8″ chain to pick it up. This is 12″ divided by 3/8″ = 32, which 32 is the D/d Ratio. If the diameter is 10″ and the diameter of the rope is 1/2, the D/d Ratio is 20.

Why is D/d Ratio Important?

The D/d Ratio has a tremendous impact on sling capacity when using slings like wire rope, chain, polyester round slings, and nylon slings. It can determine the sling’s efficiency or capacity reduction, and allow you to make corrections before continuing the lift. If you see a tight bending of the sling, this means there’s a smaller than recommended D/d Ratio.

Using a smaller D/d Ratio that’s not recommended for your lift can aggravate the bending motion. This can result in fatigue, irregular wear, and increased deterioration. Once this occurs, you’d have to perform frequent inspections and go through costly wire rope replacements.

Each sling type has different strength efficiencies, which is why we included a table below that describes the efficiency of various sling constructions with standard D/d Ratios:

Mechanically spliced, single-part slings	25 times rope diameter
Hand-Spliced, single-part slings	15 times rope diameter
Braided multi-part slings of 6 parts	25 times component rope diameter
Braided multi-part slings of 8 parts	25 times component rope diameter
Helically laid multi-part slings	25 times component rope diameter
Hand-tucked grommets and mechanically joined grommet	5 times sling body diameter

Union Rope’s Rated Capacity, Design Factors, and D/d Ratios

What Will Sling Damage Look Like?

When a sling is tightly bending around another object, there is a loss of sling capacity. As D/d Ratio decreases, this capacity loss becomes greater and the sling will become less efficient. There is a direct correlation between D/d Ratio and the efficiency of the sling (or rated capacity).

Not only is it important to understand the D/d Ratio of the lifting sling, but it’s also equally important that fittings and rigging hardware used in connection points are adequately strong and spatially correct. For instance, if smaller, alloy shackles are used, the webbing edges can get damaged and sling efficiency is lowered due to the bunching of the webbing.

When not used correctly, this could result in bunching, and being crammed into a space will reduce sling efficiency and capacity. Basically, putting too many slings in an undersized shackle or another fitting can result in lost strength.

To understand what slings or fittings should you use for your job, give our team a call at 800-404-7068, and we’ll be glad to assist you.

Different Type of Slings

Now that you have an idea of what D/d Ratio means, continue reading on what lifting slings you should use that’s worth the investment for your lifting situations.

Nylon Slings

Known as synthetic web slings or nylon web slings, our nylon lifting straps perform well for lifting breakable, delicate objects. Its heavy-duty synthetic material has great stretch and flexibility that help the slings mold to the shape of the load. Not only that, the nylon lifting sling’s material is treated to improve abrasion resistance and reduce wear, even in the most rigorous lifting applications.

Chain Slings

If you’re depending on a sling that requires extra strength and durability, the chain sling is your best choice. The chain lifting sling is the strongest and most durable type of sling and is highly popular to use for heavy lifting operations. They will perform better than polyester round slings or nylon slings because they’re more durable, tolerant to hot temperatures, and cut-resistant.

Polyester Slings

Manufactured in the USA from a continuous loop of polyester yarn that creates exceptional strength, the round slings are versatile, pliable, convenient, and cost-effective. Because of their many benefits, you can use these in vertical, choker, or basket hitches, making them effective to lift a wide variety of cargo!

Wire Rope Slings

Known as steel cable or wire sling, these are more durable than synthetic slings and more cost-effective than chain slings. Wire rope slings are an excellent choice not only for lifting, but also for hoisting, towing, or anchoring loads. Its fabrication offers abrasion-resistance and heat-resistance, as they are made by weaving individual strands or wire around a core.

To understand what lifting slings you should use for any lifting operation, read 3 Factors to Consider When Choosing Lifting Slings.

Tackle the Toughest Lifting Jobs with High-Quality Rigging Hardware

We know the importance of quality when it comes to rigging supplies. We carry a variety of rigging hardware, as well as lifting beams and spreader bars that can lift heavy loads safely and efficiently.

Need a custom lifting sling? We can do that! We can customize a lifting sling to meet your specific needs.

Contact our sales team today at 866-444-9990. Our team of product experts is here to answer any questions about rigging hardware, lifting slings, and more.

What is Sling Protection, What are the Different Types of Slings, & How to Protect Them

Sling protection products can protect slings, the load, and even the load’s surroundings. Read to learn how to improve the durability of your slings and create safety and cost saving solutions in the workplace.

Are you constantly having to buy new lifting slings, or finding that your slings keep getting damaged? Are you noticing that improper use of the load or load damage is often caused by the sling itself? These issues are related to one of the most common lifting problems – lack of proper sling protection.

Luckily, we have a few tips on how to improve the endurance and longevity of your slings. In this blog, we’ll explain what is sling protection, when slings require protection, and the best sling protection products.

What is Sling Protection?

Use Corner Guards to Protect Lifting Slings

Sling protection is a common term in the lifting and rigging industry. Just like adding a screen protector to your phone, there are sling protection products that can protect your slings from sharp corners and edges.

We need to ensure the lifting sling is not cut or abraded during the lift, and the load is secured. We’re able to achieve that through products that support the durability of the lifting slings.

When researching sling protection products, it’s important to understand that some products are good for preventing abrasions while others are good for resistance to cutting. It’s also critical to know that the most common sling protection materials are polyester or nylon webbing, Kevlar, rubber, leather, and wood. While learning about your slings or the slings you wish to get, make sure to know what application you are using the sling for as well as the physical properties of the load and sling protection products.

We’re emphasizing the importance of sling protection producs because it’s typically less expensive to replace sling protection products multiple times than to replace the lifting sling.

When do Slings Require Protection?

All types of lifting slings like nylon, polyester, wire rope, and chain must be protected from edges, corners, and protrusions. You can use products like corner guards, sleeves, reinforced eyes, and wear pads to help your slings. We also carry a line of Straightpoint Load Monitoring Loadcells to precisely measure and safely monitor the tension of loads involving wire rope, guy wire, synthetic rope, shackles, and more.

While all types of lifting slings require protection from sharp corners and edges, it’s common to use sling protection products to a synthetic sling like round slings and web slings. This is because the nylon and polyester fibers of a synthetic sling are more susceptible to cuts, tears, and abrasion than stronger sling materials like wire rope or chain. In fact, the cutting of synthetic slings during use is the number one cause of sling accidents.

The sling can make contact with the load or hardware:

Around any lift points like load edges, hoist rings, and eye bolts
Around the crane hook, shackle, and master link.
On load edges that could be above the hookup points

What Happens When I Don’t Protect My Slings?

How to Protect your lifting slings from sharp edges

There are several ways slings could be destroyed if you don’t use sling protection products. Without the usage of sling protection products, there is potential for:

Injury or loss of life
Higher turnover of slings, especially synthetic ones
Major damage to the sling, load, and around the load’s surroundings if the sling is cut, and the load is dropped
Damage caused to the load itself from lack of protection, especially when using wire rope and chain slings which can exert crushing forces on a load

As explained above, when you’re not using the proper sling protection, it can result in a dropped load or scratching and damaging it. This can be dangerous as this could result in injury, dismemberment, or loss of life.

In addition to that, if you’re not protecting your slings, you’re creating a higher turnover in slings and this will result in higher equipment costs. To learn more about what lifting slings you should use for the right job, read 3 Factors to Consider When Choosing Lifting Slings.

How Do Sharp Edges or Corners Damage Slings?

What is sling protection, how to protect any lifting sling

Edges can damage different types of slings in several different ways.

If you’re using chain slings, the edges can cause nicks and gouges, crushed links, and bent or twisted links. When using wire rope, the corners could damage broken wires, kinks, or doglegs. Lastly, nylon and polyester slings can be cut or abraded easily.

If your sling isn’t protected and it gets damaged, it’s more expensive to replace the sling than the sling protection product. It is much more cost-effective to replace the sling protection rather than replacing the sling itself.

Nylon and polyester slings can be easily confusing as they have a few similarities. To understand which web sling you should get, read Polyester Slings vs Nylon Slings: Which Web Sling Type is Better?

Tackle the Toughest Lifting Jobs with High-Quality Rigging Hardware

We know the importance of quality when it comes to lifting supplies. We carry a variety of rigging hardware, as well as lifting beams and spreader bars that are designed to lift heavy loads safely and efficiently.

Need a custom lifting sling? We can do that. We’ll customize a lifting sling to meet your specific needs.

Curious about Straightpoint products and how they work? Read more information about them below!

Do You Know How Much That Weighs? Straightpoint Load Cells Do

Compression Type Load Cells: Wireless vs. Wired

How to Select a Load Cell

Contact our sales team at US Cargo Control today at 866-444-9990. Our team of product experts is here to answer any questions about rigging hardware, lifting slings, and more.

WSTDA COVID-19 Guidance For Synthetic Slings and Tie Downs

WSTDA releases guidance for COVID-19.

The Web Sling and Tie Down Association (WSTDA) recently released guidance on disinfecting synthetic slings and tie-downs to prevent the transmission of COVID-19.

In general, it is not recommended that web slings and tie-downs be washed or disinfected as it can lead to a loss of strength. Many chemicals and cleaners commonly used to disinfect other inanimate household objects could have adverse effects on synthetic slings and tie-downs.

We understand there are a lot of questions and unknowns when it comes to the Coronavirus pandemic and encourage our customers to read the full release from the WSTDA on their website.

At US Cargo Control, we care about our customers and getting them what they want, when they need it. If you have any questions about our products, give our team a call at 866-444-9990.

Stay safe everyone!

How to Tell When It’s Time for New Rigging Gear

Whether you’re inspecting wire rope, chain slings, synthetic web slings, round slings, or any type of rigging hardware, here are the warning signs of potential rigging equipment failure.

Stay safe and compliant with these rigging gear inspection tips.

The best way to tell if it’s time to upgrade your rigging and lifting gear starts with regular inspections, ideally before and after each use. When you’re trying to get a job done, it’s easy to fall out of the habit of inspecting your gear. But, compared to the alternatives options of either failing an official inspection or having your gear fail while in use, regular rigging gear inspection is well worth it.

So, whether you’re using wire rope, chain slings, synthetic web slings, round slings, or any type of rigging hardware, here are the warning signs to look for when inspecting your rigging gear.

Wire Rope Inspection

Wire rope is often combined with wire rope clips and thimbles and also used in wire rope slings that are great for a variety of lifts. It’s also commonly used on specialty vehicles, like tow trucks, as a winch line. Between load stress, environmental conditions, and abrasion, there are many factors that can shorten the life of wire rope.

Regularly inspect your wire rope and discard it if any of the following is evident:

Excessive broken wire
Distortion or kinking
Severe corrosion
Shiny worn spots on the outside of the rope
A one-third reduction in the outer wire diameter
Damaged or displaced hooks, link, rings, or other end fittings

Chain Sling Inspection

Yes, even the strongest chain slings, like a mighty grade 120 chain sling, can become overly stressed and eventually unsafe to continue using. Heat, chemicals, and heavy loads all take a toll on a chain slings longevity.

If you notice any of the following on your chain slings, cut them up into 3′ to 4′ lengths (to prevent salvaging) and then recycle them:

Stretched or overly-elongated links
Kinks or binding
Nicks or gouges in links

Synthetic Web Sling Inspection

inspection checklist for synthetic web slings

The softness and flexibility of polyester and nylon lifting slings make them great for lifting fragile or expensive cargo. But just because they’re lifting delicately, doesn’t mean that can’t become worn out and dangerous to use.

Discontinue use and cut the sling into 3′ to 4′ lengths (and cut the eye) if you notice any of the following:

Snags, tears, or cuts
Melting or charring of any surface area
Acid or caustic burns
Broken or worn stitching
Elongation that exceeds manufacturer’s recommendation
Distortion of any fittings

Polyester Round Sling Inspection

inspection checklist for polyester round slings

Round slings are a versatile, strong, and cost-efficient tool for lifting a variety of cargo types. Polyester round slings contain a continuous loop of polyester yarn inside and a durable polyester fabric on the outside that is usually color-coded by lifting capacity.

While round slings are able to handle large loads, even the smallest rip, cut, or tear is enough to make it unsafe for use. If you notice these issues during inspection, cut the sling in half to retire it from service:

Exposure of the yarn core or broken or damaged yarn
Heat damage
Discolored, brittle, or stiff areas
Acid or caustic burns

Rigging Hardware Inspection

inspection checklist for rigging hardware

Common pieces of rigging hardware used for lifts include: shackles, turnbuckles, hooks, links and swivels, rings, wire rope clips, and thimbles. The integrity of these smaller items is vital to rigging safety.

Prior to using rigging hardware, visually inspect each piece and discontinue use if you notice the following:

Excessive nicks, gouges, or corrosion
Bent, twisted, elongated, or cracked load-bearing components
Reduction in original dimension by 10% or more
Indication of heat damage
Missing or illegible load rating information

Purchase Smart, Use With Confidence

If any of the above signs are evident during your routine inspection, it’s likely time to replace your rigging gear. Similar to knowing your rigging inspection checklist, it’s helpful to learn what to look for when buying rigging and lifting gear so you can always ensure that you’re using the best equipment for the job, and enjoy years of safe use.

For official rigging equipment inspection requirements see OSHA section 1926.251.

Polyester Slings vs Nylon Slings: Which Web Sling Type is Better?

Are polyester lifting slings better than nylon lifting slings? This is a question our lifting and rigging product experts commonly get and the answer, as it often is with rigging gear, is that it depends on the job at hand.

Before we dive into the key differences between nylon slings and polyester slings, there are many similar advantages to these two types of synthetic slings that are important to know.

polyester sling webbing — Polyester Webbing

Advantages of Synthetic Webbing

1. Ideal for delicate loads

One of the most common reasons for a rigger to use synthetic slings instead of wire rope slings or chain slings is th fact that they won’t scratch or crush your load. That’s why synthetic slings are extremely popular in the construction industry and with ship haulers.

2. Cost-efficient

Synthetic slings are also an attractive choice due to their lower cost. If you’re wondering whether nylon slings are cheaper than polyester slings, don’t. The prices are more or less the same, and your focus should be on choosing the right sling for the job.

3. Lightweight

Compared to wire rope and chain, synthetic slings are much lighter, making them easier to transport and handle. Again, nylon is typically a little heavier than polyester, but it’s not much of a difference when you consider the weight of chain and wire rope.

4. Strong

It’s true that nylon is stronger on an individual fiber level, but a polyester sling can be made just as strong as a nylon one by adding more threading. And both types can easily lift several thousand pounds. So while it’s important to use a lifting sling that’s rated for the load your lifting, this won’t affect your choice between nylon and polyester.

Physical Differences

Now that you know how they’re similar, let’s look at the differences between the physical characteristics of nylon and polyester to determine which material type is best for your job.

Nylon has more stretch

This is one the most important differences between nylon slings and polyester slings. While nylon slings have more give to them (about 7 to 10 percent stretch when at WLL) that does not mean they are weaker than polyester (typically 2 to 3 percent stretch at WLL). The main reasons you would want more or less stretch when lifting a load include overheight lifting room and the potential for “snapback”.

If you have height limitations, polyester is probably the better choice. If your load could bounce around a lot, the extra stretch of nylon will reduce the danger of the strap snapping back at you or others. This difference in the stretch is why you typically see recovery straps made of nylon and tow straps made of polyester.

Polyester is softer and more flexible

Both nylon and polyester slings are good for delicate loads, but if you’re wondering which one is best for the most delicate loads, it’s polyester. The chemical coating on nylon webbing gives it a slightly more coarse texture.

Polyester is also a bit more flexible than nylon. By flexible, I’m not talking about stretch but rather the ability to wrap tightly around a load and grip the most surface area.

This is an important difference, especially when choosing between nylon endless slings and polyester endless slings. It’s also important to note that there is a difference between flat web polyester slings and round polyester slings.

nylon round endless lifting sling — Nylon Endless Sling

polyester round endless sling — Polyester Endless Sling

Environmental Differences

Another key question to ask when choosing between nylon slings and polyester slings is, what are the environmental conditions? There’s a reason why ship haulers and those in marine environments prefer polyester slings, they absorb less water and are just a bit more resistant to UV rays. But, you also need to consider the differences when it comes to chemical resistance.

Nylon slings can’t resist acids or bleaches

Avoid using nylon slings if you’re operating anywhere near sulfuric, nitric, hydrochloric, or phosphoric acids. Nylon is also unresistant to oxidizing bleach agents such as sodium hypochlorite, hydrogen peroxide, sodium percarbonate, and calcium hypochlorite.

Polyester slings can’t resist ethers or alkalis

On the other hand, polyesters Achilles heel is ethers and alkalis. Among other chemicals, this includes diethyl ether, dimethyl ether, sodium hydroxide, potassium hydroxide, calcium hydroxide, calcium carbonate, and magnesium hydroxide.

Nylon Slings

browse all nylon slings

Polyester Slings

browse all polyester sling

Conclusion

In short, synthetic lifting slings are a great choice due to their ability to handle delicate loads, lower cost, lightness, and impressive strength. In the polyester sling vs nylon sling matchup, the winner is whichever one meets the demands of your specific job best.

Nylon slings have more stretch but can’t be used near acids or bleaches. Polyester slings are softer and hug to load surfaces better but can’t be used near ethers or alkalis.

If you have any additional questions about nylon slings or polyester slings, give our rigging product experts a call at 800-404-7068.

New Product Alert: Grade 100 Chain Slings

US Cargo Control has launched a new manufacturing capability with the introduction of KWB Grade 100 signal violet chain slings to their product line. KWB, a Pewag company, is known for their high-quality chain and fittings, while Pewag is a leader in the chain manufacturing industry, known for their innovation and high-quality products.

Chain slings are a powerful tool in heavy-duty overhead lifting applications. They also perform well in situations where excessive heat is an issue, or environmental issues (like chemicals) may be present.

4-leg grade 100 chain sling by KWB, a Pewag company — 4-Leg Grade 100 chain sling

US Cargo Control offers chain slings that are custom-made on-site with Grade 100 alloy chain and fittings. Our Grade 100 chain and fittings are manufactured by KWB, a Pewag company, in a high-visibility signal violet color that is easily identifiable in the field. High-quality and European-made, all KWB products exceed U.S. standards of NACM, ASTM and OSHA. Every link of chain is proof load tested to 2.5 times the WLL.

Grade 100 offers a 25% higher load capacity than G80, with smaller chain dimensions, considerable weight reduction and easier handling.

Types of Chain Slings

Chain slings come in single leg, 2-leg, 3-leg and 4-leg configurations. Each assembly can be tailored by number of legs, chain dimension, type of hook, and chain length. Assemblies are made in the USA with direct oversight provided. Every component offers traceability with appropriate markings.

Adjustable chain slings are also available. These slings are manufactured with shortening hooks on the master link that allow the legs to be shortened without a reduction in load capacity (WLL) due to 4-fold safety.

The signal violet color slightly varies between the chain and the fittings due to the thick powder coating the components have, versus the spray painted coating of the chain.

When choosing a sling for your application, US Cargo Control Sales Specialist Eric Japenga suggests starting with determining the amount of weight your lift will cover. After you know your load’s weight you can identify how many legs you’ll need, then the diameter of the chain.

Japenga says with lower-weight lifts that do not require much stability, a one-legged sling should do the job. Add another leg to handle more weight. For the heaviest lifts, a three-legged sling offers the highest working load limit (WLL). You can add a 4^th leg that will add stability, although it will not increase the WLL above the 3-legged sling.

Adding Fittings to Your Chain Sling

When it comes to choosing the type of hook for your sling, Pewag offers the following guidelines:

KWB Grade 100 Clevis Sling Hook — KWB Clevis Sling Hook

Grab hooks are typically used in choke applications
Clevis hooks do not require a connector hook, and are their most popular style
Sling hook with latches offer an added safety feature and are OSHA compliant
Eye hooks need a connecting link and can also be used with wire or synthetic rope
Self-locking hooks offer greater safety than latch hooks because these latches must be released manually
Swivel hooks are versatile and do not swivel under load
Foundry hooks are used when you need a larger mouth opening, however it should be noted that before using this type of hook, check whether hooks without safety latches are allowed for your application

When ordering your chain sling, if you require a proof testing certificate, you must request one at the time of order, and a nominal fee will be charged.

US Cargo Control is the exclusive carrier in the continental United States for KWB signal violet chain in the 9/32” to ½” sizes, making this not only a quality product, but a unique one as well. In addition to our exclusive KWB chain sizes, we also offer Grade 100 signal violet chain in 3/4” and 5/8” sizes.

Give us a call with any questions or to place an order, 800-660-3585.

New Products: Nylon Bridle Slings

Our nylon lifting slings category continues to expand with the most recent addition of 600+ new Nylon Bridle Slings.

A nylon bridle sling offer s both incredible strength and ease of use due to its light weight and ability to collapse for easy storage.

Other benefits include:

Four configurations available (single leg, double leg, triple leg, or quad leg) to meet a variety of applications.

The synthetic nylon is more flexible than chain or wire rope.

Quality hardware from Pewag ensures quality. Oblong links are manufactured in Grade 100 alloy steel; hooks are all in a Grade 80 alloy steel.

Each bridle sling leg stretches approximately 3% at rated capacity, helping to absorb shock during a lift.

Nylon fabric will not conduct electricity like a chain sling or wire rope sling.

Multiple leg design in the 2-, 3-, and 4-leg styles allow the bearing points to be rotated, which extends the sling’s working life.

Available in two different ply thickness.

The 2-, 3-, and 4-leg styles can be used in different hitches, offering excellent versatility.

We offer three end fittings online- oblong, hook, and sewn eye. Each sling also has a master oblong link. Two widths (1″ and 2″) and two ply options (1-ply and 2-ply) are also available for order online.

Other recent additions to the nylon sling category include Drum Slings and Drum Lifters, as well as a request quote form for Custom Boat Slings.

Like all of our nylon slings, our nylon web bridle slings are made in the USA.

If you don’t see the sling you need, give us a call. We’re always happy to customize a bridle web sling assembly to your specs. You can reach our lifting slings product team at 800-660-3585.

Click over to our website to see all of our Lifting Slings & Rigging Slings, or click the buttons below to go directly to each category of nylon bridle slings.

US Cargo Control Employee Bio: Jon

As part of our sales team, Jon helps customers calling in with product questions or would like to place an order over the phone. He’s quickly become one of our experts in our category of lifting slings, and enjoys helping customers who may not know what type of sling would work best for their particular application.

New Products: Drum Handling Equipment

We’ve recently added a new category of drum handling equipment to our expanding line of lifting slings.

A drum sling is an easy and efficient way to move a 55 gallon drum. Constructed of nylon webbing (either 1″ or 2″ wide), it can have either a harness design or hooks to hold the drum, while the top sling portion easily attaches to a forklift, crane, etc.

Vertical Drum Sling w/Harness

Vertical Drum Sling w/Barrel Hooks

Drum handler or drum lifters are additional terms used for this type of equipment, but those are generally manufactured in chain or metal. The benefit of nylon webbing over traditional 55 gallon drum handling equipment is its lightweight design makes it easy to use and easy to store when not in use. Nylon also offers subtle stretch to conform to the load and added maneuverability.

Web slings can also be extremely versatile, as the drum lifts with barrel hooks can be made with longer-length webbing and used in a horizontal configuration as well. The design of the harness sling allows the operator to pour contents from a ribbed barrel.

While drum slings and harnesses are most commonly found in manufacturing settings, these benefits also make nylon drum handling slings extremely useful on the farm, at the dock, warehouse, etc. And because they’re custom-made to your specifications, we can create the best sling for your application. Each drum lifter sling is manufactured with an ID tag showing rated capacities to make it easy to follow safe lifting guidelines.

Not sure what size or style would work best? Give our sales team a call at 800-660-3585. they’ll be happy to help.

To see our entire line of lifting slings, click over to our Lifting Slings & Rigging Slings page.

How to Choose a Lifting Sling

Choosing the right sling for lighting can be confusing, but it’s important to take the environment and conditions where the lifting sling will be used into consideration.

Nylon lifting sling

Nylon lifting slings are a popular choice because of their multi-purpose uses. A nylon web sling is unaffected by petroleum products like grease and oil. Nylon slings are also resilient to specific chemicals including ethers, strong alkalies and aldehydes. Nylon webbing is not a good choice for uses involving bleaching agents or acids, or for use in temperatures over 194 degrees Fahrenheit (90 degrees Celsius). Nylon also stretches at approximately 8-10%, so it should not be used when elongation is not intended.

Polyester lifting sling

Like a nylon lifting straps, polyester round slings also have temperature guidelines, and are not advised for use in temperatures over 194 degrees Fahrenheit (90 degrees Celsius). Unlike nylon, they will stretch only approximately 3% of its rated capacity. A polyester round sling can handle acidic environments because the fabric is not affected by bleaching agents or common acids. Polyester webbing, however, should not be used if it will come in contact with sulfuric acids or alkaline.

Chain lifting sling

Chain lifting slings are ideal for rugged environments and jobs. They resist abrasions, cutting and can maintain their strength and integrity even in extremely high temperatures up to 400 degrees Fahrenheit (204 degree Celsius). Chain slings are generally constructed in Grade 80 steel, but a Grade 100 chain is usually available on request. Grade 100 chain offers more strength (about 25% more) for lifting chains, yet weighs less than traditional Grade 80 lift chains. Another benefit of a chain sling is its ability to be customized for almost any type of lift. However, a chain hoist can be expensive and the prices can vary due to the market fluctuations.

Wire rope lifting sling

Wire rope slings are similar to a chain sling in that it offers excellent durability, strength and resistance to high temperatures. Wire rope, however, is more cost-efficient than chain so it’s a great choice is price is a concern. Because abrasion-resistance and flexibility of the wire rope can change depending on its configuration, a chain sling can be manufactured using a specific type of wire rope. Typically, wire rope is made from either 6×19 or 6×37 classes of rope. A 6×19 is the most widely used because of its ideal combination of flexibility and abrasion resistance. A 6×37 class rope is more flexible, but offers less resistance to abrasion.

Other factors will go into determining which lifting sling type is best for your specific job, such as the item(s) being lifted, capacities needed, etc. For help choosing a lift sling, call our product specialists at 800-660-3585. They’ll be happy to any answer questions you may have.