Eye And Eye Flat or Twist Nylon Web Slings

Eye and Eye 9800 lb web sling rated capacities in pounds
Eye & Eye 9800lb Web Slings
Rated Capacity – LBS
Sling Width	Number of Plys	Vertical	Choker 120°	Basket Hitches
Sling Width	Number of Plys	Vertical	Choker 120°	Basket Hitch Legs 90°	Bridle Hitch 60°	Bridle Hitch 45°	Bridle Hitch 30°
1"	1	1,600	1,300	3,200	2,800	2,300	1,600
2"	1	3,200	2,600	6,400	5,500	4,500	3,200
3"	1	4,800	3,800	9,600	8,300	6,800	4,800
4"	1	6,400	5,100	12,800	11,100	9,000	6,400
6"	1	9,600	7,700	19,200	16,600	13,600	9,600
8"	1	12,800	10,200	25,600	22,200	18,100	12,800
10"	1	16,000	12,800	32,000	27,700	22,600	16,000
12"	1	19,200	15,400	38,400	33,300	27,100	19,200
1"	2	3,200	2,600	6,400	5,500	4,500	3,200
2"	2	6,400	5,100	12,800	11,100	9,000	6,400
3"	2	8,900	7,100	17,800	15,400	12,600	8,900
4"	2	11,500	9,200	23,000	19,900	16,300	11,500
6"	2	16,300	13,000	32,600	28,200	23,000	16,300
8"	2	20,500	16,400	41,000	35,500	29,000	20,500
10"	2	24,000	19,200	48,000	41,600	33,900	24,000
12"	2	26,900	21,500	53,800	46,600	38,000	26,900
1"	3	4,100	3,300	8,200	7,100	5,800	4,100
2"	3	8,200	6,600	16,400	14,200	11,600	8,200
3"	3	12,300	9,800	24,600	21,300	17,400	12,300
4"	3	15,300	12,200	30,600	26,500	21,600	15,300
6"	3	22,900	18,300	45,800	39,700	32,400	22,900
8"	3	30,700	24,600	61,400	53,200	43,400	30,700
10"	3	36,000	28,800	72,000	62,400	50,900	36,000
12"	3	40,300	32,200	80,600	69,800	57,000	40,300
1"	4	5,500	4,400	11,000	9,500	7,800	5,500
2"	4	11,000	8,800	22,000	19,100	15,600	11,000
3"	4	16,500	13,200	33,000	28,600	23,300	16,500
4"	4	20,400	16,300	40,800	35,300	28,800	20,400
6"	4	30,600	24,500	61,200	53,000	43,300	30,600
8"	4	41,000	32,800	82,000	71,000	58,000	41,000
10"	4	48,000	38,400	96,000	83,100	67,900	48,000
12"	4	53,700	43,000	107,400	93,000	75,900	53,700

How to inspect web slings.

All of our synthetic web products are designed for long life under punishing conditions, but they will eventually wear out after extended use. The key is knowing when to replace them, and that’s why it’s very important to inspect your slings on a regular basis.

We’ve developed an inspection program based on the procedure outlined in ANSI B30.9 that will make the most of your investment. It’s based on four sound beliefs:

The importance of following regular and uniform inspections.
A respect for the capabilities and limitations of synthetic web slings.
The need to keep complete, permanent records.
Perhaps most importantly, a lot of common sense.

How often to inspect slings.

The frequency of inspection depends on three important factors:

Sling usage — the more you use a sling, the more you need to inspect it.
The working environment — the harsher the conditions, the more often you need to inspect.
Sling service life — based on your experience in using slings.

It’s a good idea for the person handling the slings to visually inspect all slings before each lift. Additional inspections should be performed at least annually by a qualified designated person and permanent records kept.

OSHA specifies, “Each day before being used, the sling and all fastenings and attachments shall be inspected for damage or defects by a competent person designated by the employer. Additional inspections shall be performed during sling use, where service conditions warrant.” In other words, you should visually inspect your sling before each lift.

When to replace slings.

Remove all slings, including Nanotech round slings, from service if you see damage such as the following, and return to service only when approved by a designated person. These are removal criteria established by ANSI B30.9:

Acid or caustic burns.
Melting or charring of any part of the sling.
Holes, tears, cuts or snags.
Broken or worn stitching in load-bearing splices.
Excessive abrasive wear.
Knots in any part of the sling.
Excessive pitting or corrosion, or cracked, distorted or broken fittings.
Other visible damage that causes doubt as to the strength of the sling.
Missing or illegible sling identification.

In addition, we recommend three other important reasons to remove slings from service:

Distortion of the sling.
Anytime a sling is loaded beyond its rated capacity for whatever reason.

While most of these standards are very specific regarding reasons for removal, others require your good judgment. The critical areas to watch are wear to the sling body, the selvage edge of webbing and the condition of the sling eyes.

Repair guidelines.

It’s never enough to give slings temporary repairs. Always follow these guidelines:

Damaged slings should be repaired only by a sling manufacturer. If that isn’t possible, the repairman should certify in writing the sling’s rated capacity.
Slings repaired by a manufacturer must be proof-tested to twice the designated rated capacity on the tag before returning it to service — and back it up with a certificate of the proof-testing.
Inspection records for individual slings that have been repaired should be updated with all the relevant information such as the circumstances involved and proof-testing.

Our synthetic web products measure up.

Our synthetic web products don’t merely meet our own strict standards for workmanship and performance. They also meet or exceed these military and federal specifications:

ANSI Standard Z1.8 — specifications of general requirements for a quality program.

In addition, all work conforms to standards established by the following national safety institutions and their respective regulations:

American National Standards Institute (ANSI) B30.9 Safety Standards for Cranes, Derricks, Hoists, Hooks, Jacks and Slings.
Occupational Safety and Health Administration (OSHA) 1910.184 Standards for Slings.

Identifying wear and abuse.

These are some of the most common types of web sling damage caused by abuse and misuse. When you see any of these problems during your regular inspection, stop. Replace the sling immediately because the damage is done. Never attempt to mend the sling yourself and, more so, never attempt to lift with these slings.

Whether a sling is damaged from improper use or normal wear, the same rule applies in all cases: always cut the sling eyes and discard the sling right away when you see damage. Only with properly working slings can you take a load off your mind.

Tensile break

The distinguishing sign of a tensile break is a frayed appearance close to the point of failure or damage. This usually happens when a sling is loaded beyond its existing strength. The photo shows an example of a sling pulled to destruction on a testing machine. You can avoid tensile breaks by never overloading your sling.

Cut

You can easily see a cut in your sling when you see a clean break in the webbing structure or fibers. This usually results when a sling contacts a sharp object or unprotected edge of a load. This can happen anywhere on the sling body or eyes. One way you can avoid cuts from contacting sharp corners is to use wear pads on the sling to protect the fabric.

Cut and tensile damage

This shows what can happen when you use a sling that’s already been cut by a sharp object along one edge of the sling body. The cut dramatically reduces lifting capacity, and continued use will ultimately lead to sling failure, usually at a load far below the sling’s rated capacity. The solution is to never use a sling after it’s been cut.

Abrasion damage

Anytime you see frayed fibers on the surface exposing the “picks,” or cross fibers, of the webbing that hold the load-bearing (lengthwise) fibers in place, it’s abrasion damage. The most common abrasion damage occurs either when the sling slips while in contact with a load during a lift or when the sling is pulled from under a load. We recommend that slings with any damage to load-bearing fibers be discarded. Wear pads are one way to avoid this damage.

Acid damage

It’s true nylon and polyester webbing are stable when exposed to many common chemicals, but they should never be exposed to any strong acids or corrosive liquids whenever possible. The same is true for metal fittings on slings.

Example 1 (top photo). This is what happens when sulfuric acid, like car battery acid, is heated to the boiling point and dropped on nylon webbing. The charring on the surface fibers deteriorates the sling and will continue to get worse, severely affecting the webbing strength.

Example 2 (bottom photo). This is what happens when nylon webbing is immersed in sulfuric acid at room temperature for three weeks, resulting in major damage. Note the fibers are softened and swollen, and the entire fabric is grossly distorted, virtually destroying the webbing. You can help prevent this damage by never storing slings in areas where they may be exposed to acid or acid fumes, which are as destructive as liquid.

Warranty

Any warranty, expressed or implied as to quality, performance or fitness for use is always premised on the condition that the published rated capacities apply only to new, unused slings and assemblies, that the mechanical equipment on which such products are used is properly designed and maintained, that such products are properly stored, handled, used and maintained, and properly inspected on a regular basis during the period of use.

Seller shall not be liable under any circumstances for consequential or incidental damages or secondary charges including but not limited to personal injury, labor costs, a loss of profits resulting from the use of said products or from said products being incorporated in or becoming a component of any other product.

Take a load off our mind.

If you’re looking for a full line of proven synthetic web slings for your many different loads, you’ve come to the right place.

Information to help you fit web slings to your application.

On these pages, you’ll find how to match the sling to your load according to rated capacity, how to use the right hitch, how to calculate the load on each leg of a sling and how to adjust the rated capacity of choker hitches. You’ll also find out how to choose the right material, coatings and wear pads to fit your many different lift requirements.

One of the industry’s most complete lines of synthetic web products.

One size does not fit all. Our complete line of synthetic web products includes:

Heavy-duty web sling products in 10 standard types.
Web products for special needs such as boat lifting applications, truck tiedowns and many others.
NanoTech round slings.
Custom-made web products to fit your unique needs.
Specifications on the hardware you’ll need.

Details on proper care and maintenance.

Read how to care for and maintain your web slings. See the special sections within this handbook on troubleshooting, proper inspection, cleaning and storage to help you make the most of your web sling investments.

Proven experience in technical and sales support.

Nobody else has more experience in the lifting industry than we do. Look to us for engineering assistance in sling selection and design, including experience in high-capacity, multiple-sling rigging systems. We also offer expert technical sales support at the local level. Call us today, and we’ll help you take a load off your mind.

Why proper cleaning is vital.

All it takes is a little ordinary dirt, grit and grime to reduce the overall strength and life of your sling. It’s very easy for these contaminants to penetrate between fibers anytime the webbing bends, pulls tight against loads, or stretches and relaxes during loading and unloading. Once in place, they grind against the fibers, reducing their strength and useful life.

That’s why it’s a good idea to properly store your slings when they’re out of service and to clean them when they become soiled. When slings are clean, they’re not only easier to inspect, they’re also stronger and more durable.

There are many procedures you can use to clean your slings, depending on how soiled they are. For everyday dirt and grime, you can clean with soap or detergent and water for good results. Whatever cleaning method you use, always hang your washed slings in a dry, sheltered place. Always keep slings from prolonged contact with direct sunlight during drying and storage because ultraviolet rays can degrade synthetic fibers. Nylon or polyester slings that have been dyed any color but white will fade somewhat due to washing, but this in no way affects the strength of the webbing.

Both nylon and polyester webbing have an extremely low water absorption rate, making them flexible, light and easy to handle even after prolonged soaking in water. Both also show excellent resistance to mold, mildew and fungus, although dirt that accumulates on slings may support their growth, and that’s why regular cleaning is very important.

Choose the right hitch for your load.

By using the following descriptions, you’ll ensure the right choice when selecting a hitch for your various lifting operations.

Vertical.

Also called straight hitches. These attach by simply using a sling to connect a lifting hook to a load. Use the sling to its full rated lifting capacity, but never above it. Use a tagline to keep the load from rotating, which may damage the sling. When you attach two or more slings to the same lifting hook, the total hitch becomes a lifting bridle, distributing the load among the individual slings. When using two or more slings, remember that the sling angle affects the slings’ rated capacities.

Choker.

These hitches are used when the load won’t be seriously damaged by the sling body (or vice versa) and when the lift requires the sling to hug the load. These reduce a sling’s lifting capability. The diameter of the bend where the sling contacts the load should keep the point of choke against the sling body — never against a splice or the base of the eye. When a choke is used at an angle of less than 120°, the sling rated capacity must be reduced.

Two notes of caution: always pull a choker hitch tight before a lift is made — not during the lift. And never use only one choker hitch to lift a load that may shift or slide out of the choke.

Basket.

These hitches distribute a load between the two legs of a sling within the limitations described below.

Calculate the load of basket hitches.

Two vertical sling legs sharing a 1,000 lb load

There’s an important principle to remember before you calculate your load: as the horizontal angle of a sling decreases, the load on each leg increases. That’s true whether you use a single sling as a basket or two slings with each in a straight pull such as a two-legged bridle.

Example 1

Total load is 1,000 lbs. divided by two legs = 500 lbs. (load per leg if vertical lift).
Horizontal sling angle is 60°.
Multiply 500 lbs. by 1.154 load factor (from table) = 577 lbs. actual load per leg.

Basket hitch at 60 degrees, 577 lbs per leg

Example 2

Total load is 1,000 lbs. divided by two legs = 500 lbs. (load per leg if vertical lift).
Horizontal sling angle is 45°.
Multiply 500 lbs. by 1.414 load factor (from table) = 707 lbs. actual load per leg.

Basket hitch at 45 degrees, 707 lbs per leg

Example 3

Two-leg total load is 1,000 lbs.
Horizontal sling angle is 30°.
Multiply by 2 and actual load is 1,000 lbs.

Basket hitch at 30 degrees, 1,000 lbs per leg

Anytime you lift a load with a leg (or legs) of a sling at an angle, you can calculate the load per leg as well as the sling’s rated capacity by using the following three-step formula.

Divide your total load by the number of legs you’re using. This gives you the load per leg if the lift were being made with all legs lifting vertically. All of these calculations assume the center of gravity is directly below the hook. If not, then more complicated engineering calculations are needed.
Find out the angle between the legs of the sling and the horizontal plane.
Multiply the load per leg (from step 1) by the load factor for the leg angle you’re using (from the table). This gives you the actual load on each leg for this lift and angle. The actual load must never exceed the sling’s rated capacity.

Calculating the angle of bridles.

The horizontal angle of bridles with three or more legs is measured the same way as horizontal sling angles of two-legged hitches. If a bridle is designed with different leg lengths, it may result in different horizontal angles. Normally, the leg with the smallest horizontal angle will carry the greatest load. That means you should use the smallest horizontal angle when you calculate the actual leg load and evaluate your sling’s rated capacity. In extreme angular conditions, an engineering analysis should be made.

Load factor guidelines
Leg angle	Load factor
90°	1.000
85°	1.003
80°	1.015
75°	1.035
70°	1.064
65°	1.103
60°	1.154
55°	1.220
50°	1.305
45°	1.414
40°	1.555
35°	1.743
30°	2.000

Adjusting choker hitch rated capacity.

When a choker hitch is drawn tight at an angle of less than 120°, you’ll need to reduce the hitch’s rated capacity to allow for loss of rated capacity as the chart below shows.

Choker hitch rated capacity
Angle of choke	Rated capacity*
120°–180°	100%
60°–119°	95%
0°–59°	90%

* Percent of sling’s rated capacity in a choker hitch.

Choker hitch angles from 30 to 180 degrees

Our tests have shown that when the angle was less than 120°, the sling body always failed at the point of choke when pulled to maximum. You must always allow for this anytime you use a choker hitch to shift, turn or control a load, or when the pull is against the choke in a multi-leg lift.