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SUPER FISHER polyester endless round sling uses high-tenacity 100% polyester load-bearing yarn with a protective outer sleeve for industrial lifting from 1 to 500 tons.
- Capacity: 1–500 TonSF-RS
SUPER FISHER/ OEM
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SUPER FISHER polyester endless round sling is designed for industrial lifting applications that require high load capacity, flexible load contact and relatively low sling weight.
The sling uses 100% high-tenacity polyester load-bearing yarn continuously wound into an endless hank. The yarn core is enclosed by a protective outer sleeve, keeping the load-bearing fibers separated from direct contact with the load and lifting hardware.
Available capacities range from 1 to 500 tons with customized lengths for different lifting projects. The sling is manufactured according to EN 1492-2:2000+A1:2008 with a 7:1 safety factor.
Specification | Details |
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Product Type | Polyester Endless Round Sling |
Model | SF-RS |
Material | 100% Polyester (PES) |
Construction | Endless Load-Bearing Yarn Core |
Standard | EN 1492-2:2000+A1:2008 |
Capacity | 1–500 Ton |
Safety Factor | 7:1 |
Length | Customizable |
Outer Protection | Protective Polyester Sleeve |
Brand | SUPER FISHER / OEM |
Custom Options | Capacity, Length, Label, Branding and Packaging |
The Working Load Limit shown on the sling identification should always be confirmed before lifting. Actual permissible loading also depends on the lifting method, sling angle, connection hardware and load configuration.
The internal load-bearing section is formed from continuous high-tenacity polyester yarn wound repeatedly into an endless hank.
Unlike flat webbing, where the woven strap itself carries the load, the strength of a round sling comes primarily from the continuous yarn core inside the protective sleeve.
The number of yarn turns is determined according to the required Working Load Limit.
SUPER FISHER uses dedicated round sling winding equipment to control how the polyester yarn is laid into the sling.
Uniform winding helps maintain more consistent tension between the individual yarns and creates a compact internal structure.
This is particularly important for higher-capacity round slings, where a larger quantity of load-bearing yarn must work together during lifting.
Polyester round slings provide substantial lifting capacity without the weight associated with many chain or wire-rope lifting assemblies.
This can make them easier to carry, position and remove from large or irregular loads.
The flexible construction also allows the sling to conform more closely to curved and uneven load profiles.
The load-bearing polyester yarn is enclosed by a woven protective sleeve.
The sleeve itself is not intended to provide the primary lifting strength. Its main purpose is to protect the internal yarn from direct abrasion, dirt and contact with the load.
This separation between the load-bearing core and external surface is one of the key structural differences between a round sling and a flat webbing sling.
During normal use, the outer sleeve takes much of the surface contact that would otherwise act directly on the load-bearing yarn.
Because the sling has an endless construction, operators can also vary the contact position during use rather than repeatedly loading exactly the same area.
This can help distribute normal surface wear more evenly along the sling.
However, rotation does not make a damaged sling safe. If the sleeve is cut deeply or the internal yarn is exposed, the sling should be removed from service.
The flexible polyester sleeve provides a softer contact surface than many rigid lifting components.
This makes polyester round slings suitable for handling loads such as:
Painted machinery
Finished steel components
Cylindrical equipment
Large pipes
Fabricated structures
Wind power components
Industrial vessels
Machinery housings
Irregularly shaped equipment
Sharp edges must still be protected with suitable edge protection. The textile sleeve should never be relied upon as cut protection by itself.
The SF-RS polyester round sling is manufactured with a 7:1 safety factor according to its specified product standard.
The safety factor describes the relationship between the minimum breaking-force requirement and the rated Working Load Limit.
For example, a 7:1 safety factor does not mean a 1-ton sling may be used to lift 7 tons.
The marked Working Load Limit remains the maximum permitted working capacity under the applicable lifting conditions.
The Working Load Limit should be selected according to:
Actual load weight
Hitch method
Sling angle
Number of slings used
Load center of gravity
Connection hardware
Load shape
Contact points
Never select a sling based only on its physical size or sleeve color.
Correct sling identification is essential on busy lifting sites.
Polyester round slings manufactured to EN 1492-2 use identification methods that help operators distinguish different rated capacities.
The sling label provides the key product information required to confirm that the correct sling has been selected.
Depending on the required specification, identification can include:
Working Load Limit
Material
Sling length
Applicable standard
Safety factor
Manufacturer or supplier identification
Traceability information
The label should remain readable throughout the service life of the sling.
If the identification is missing or cannot be read, the sling should not be used until its specification has been properly confirmed.
An endless round sling can be arranged in several common lifting configurations.
The permitted load changes according to the way the sling is used.
In a vertical configuration, the sling connects the load directly to the lifting point.
The load should be stable and positioned so that the sling is loaded evenly.
In a choker configuration, the sling passes around the load and through itself.
This arrangement can help restrain certain load shapes, but the permissible lifting capacity is lower than in some other configurations.
The choking point should not be positioned over sharp edges or damaged areas of the sleeve.
A basket hitch supports the load from underneath with both sides of the sling.
Depending on the lifting angle and load geometry, basket arrangements can provide increased lifting capacity.
However, the allowable WLL must be determined from the applicable lifting chart rather than assuming a fixed capacity multiplier.
Both products are polyester textile slings, but their construction makes them suitable for different lifting requirements.
A round sling is often suitable when:
The load has a curved or irregular profile.
A flexible sling is needed around large components.
High lifting capacity is required with relatively low sling weight.
Load contact points may need to be repositioned.
Surface protection is important.
A webbing sling may be more suitable when:
A broad, flat contact area is preferred.
The sling must lie flat against the load.
Eye configurations are required for direct hook or shackle connection.
Operators need easier visual inspection of the load-bearing webbing itself.
Both types require correct WLL selection, edge protection and regular inspection.
Polyester endless round slings are used across a wide range of lifting environments because they combine flexibility with high lifting capacities.
Typical applications include:
Heavy machinery installation
Steel fabrication
Structural assembly
Construction projects
Port and terminal lifting
Shipyard operations
Petrochemical maintenance
Industrial plant maintenance
Wind power equipment installation
Pipe and vessel lifting
Warehouse material handling
Heavy equipment relocation
For complete lifting assemblies, the sling may be connected to suitable hooks, lifting beams or shackles.
All connecting hardware must have an adequate rated capacity and be compatible with the sling dimensions and lifting arrangement.
The SF-RS range extends from general industrial capacities to heavy-duty lifting requirements up to 500 tons.
Higher-capacity slings contain substantially more load-bearing polyester yarn and require dimensions appropriate to the specified WLL and working length.
Applications at the higher end of the capacity range may include:
Heavy machinery
Large industrial vessels
Structural modules
Energy equipment
Shipyard components
Large fabricated assemblies
For heavy lifts, sling capacity should be confirmed together with the complete rigging plan rather than considering the sling as an isolated component.
The lifting points, shackles, beams, hooks and supporting equipment must all be rated for the intended load.
Consistency during winding, sleeve assembly, labeling and final inspection is important for textile lifting equipment.
SUPER FISHER controls production through the main manufacturing stages and verifies products according to the specified order and applicable requirements.
High-tenacity polyester yarn is wound into the endless load-bearing core.
The winding process controls the quantity and distribution of yarn needed for the specified capacity.
The load-bearing core is enclosed inside the protective outer sleeve.
The sleeve protects the yarn while allowing the sling to remain flexible during use.
Labels are attached according to the required specification so the sling capacity and other key product information can be identified.
Testing is performed according to the applicable production requirements and specified 7:1 safety factor.
For project and distributor orders, required testing documents and traceability requirements should be confirmed before production.
SUPER FISHER also provides quality control and OEM services for lifting equipment orders.
Not every lifting project uses the same length or capacity.
SUPER FISHER supports customized polyester round sling production for distributors, industrial users and project buyers.
Available customization can include:
Capacity from 1 to 500 tons
Custom sling length
Product identification labels
Serial or traceability information
Customer logo
OEM branding
Warning information
Additional protective sleeves or wear protection according to the application
Customer-specific packaging
When requesting a quotation, provide:
Required WLL
Required effective length
Quantity
Lifting application
Intended hitch method
Required labeling
Destination market
Packaging requirements
Providing this information helps confirm the correct sling specification before production.
Finished round slings are prepared for transport so that the textile material remains protected during handling and shipment.
Individual products can be protected with inner wrapping before being packed into export cartons.
Bulk orders may be palletized for easier warehouse handling and international transport.
OEM orders can also use customer-specific labels, product identification and outer packaging.
Packaging requirements should be confirmed when placing the order, particularly for distributor programs or long-distance ocean shipments.
Round slings should be inspected before every lifting operation.
Because the load-bearing yarn is enclosed inside the sleeve, the condition of the outer cover is an important inspection point.
Look for:
Cuts
Tears
Holes
Excessive abrasion
Heat damage
Melted fibers
Chemical damage
Severe contamination
If damage exposes the internal load-bearing yarn, remove the sling from service.
The internal yarn should not be visible through damaged areas of the sleeve.
If the core is exposed, cut, contaminated or otherwise damaged, the sling should not continue in lifting service.
Confirm that the product can still be positively identified.
The WLL and other required information must be readable before the sling is selected for a lift.
Run the sling through your hands and visually inspect the entire circumference.
Pay particular attention to areas that regularly contact hooks, shackles or the load.
Correct rigging practices are necessary even when the sling itself is in good condition.
Before lifting:
Confirm the load weight.
Check the sling WLL.
Select the correct hitch method.
Check sling angles.
Identify the center of gravity.
Inspect the full sling.
Check all connection hardware.
Protect the sling from sharp edges.
Make sure the sling is not knotted or twisted improperly.
Take up load tension gradually.
Do not:
Exceed the marked WLL.
Use a sling with an exposed yarn core.
Drag the sling across rough surfaces.
Pull the sling from beneath a load while it is trapped.
Tie knots in the sling.
Use damaged lifting hardware.
Shock load the sling.
Place an unprotected sling over sharp edges.
Stand beneath a suspended load.
If a sling has been involved in an overload, severe impact or another abnormal lifting event, remove it from normal service until its condition has been properly assessed.
A polyester endless round sling is a textile lifting sling made from continuous load-bearing polyester yarn enclosed inside a protective tubular sleeve. The endless loop has no fixed lifting eyes, allowing different sections of the sling to be positioned at the load and hook contact points.
The SF-RS polyester endless round sling is manufactured according to EN 1492-2:2000+A1:2008.
SUPER FISHER supplies polyester endless round slings with capacities from 1 to 500 tons. Length can be customized according to lifting requirements.
A 7:1 safety factor describes the relationship between the rated Working Load Limit and the specified minimum breaking-force requirement.
It does not allow the user to lift seven times the marked WLL.
The main load-bearing component is an endless hank of high-tenacity polyester yarn. This yarn core is enclosed by an outer woven sleeve that protects it from normal surface contact and abrasion.
If the damage exposes the internal load-bearing yarn, the sling should be removed from service.
Even when the yarn is not visible, serious cuts, heat damage or heavy abrasion should be assessed before further lifting.
Only with suitable protection.
Sharp corners and edges can damage both the outer sleeve and internal yarn. Use appropriate edge protectors or protective sleeves between the sling and the load.
Yes, endless round slings can be used in basket configurations when the sling, load and lifting arrangement are suitable.
The permissible capacity depends on the actual sling angle and hitch configuration.
A round sling carries the load through continuous polyester yarn enclosed inside a protective sleeve.
A flat webbing sling carries the load through the woven webbing itself and normally has a flatter, wider profile.
The better option depends on the load shape, connection method and lifting application.
Yes. SUPER FISHER provides customized round sling lengths together with capacity, labeling, OEM branding and packaging options for different lifting projects and distributor requirements.
Remove the sling from service when the protective sleeve has serious cuts, tears, heat damage or chemical damage, when the load-bearing yarn is exposed, when identification cannot be confirmed, or whenever its condition creates doubt about safe lifting.
