Dynamica SecureLift Slings

Fibre round slings

Ultra-light and strong fibre roundslings made with HMPE/Dyneema® replacing steel wire for heavy lifting operations on- & offshore.

Technical information

Construction

Roundsling

Core material

HMPE/Dyneema®

Body cover

HMPE/Dyneema®, Polyester, Cordura, DuraForce

Eye cover material

HMPE/Dyneema®, Polyester, Cordura, DuraForce

MBL

4200 t

Length tolerance

+/- 1 % or less

Length tolerance, matched pairs

0.5 % or less

Safety

Proof Loaded

Safety factor

According to customer specifications

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Features

Strong as steel
10 times lighter than steel
Abrasion resistant
High cut resistance
Extremely low length tolerances
Very low elongation even after multiple lifts
Quick & easy rigging

Applications

Lifting

Why choose the Dynamica SecureLift round sling?

Dynamica SecureLift round slings are engineered for safety, reliability, and efficiency, offering a range of benefits that make them an ideal choice for lifting operations:

Proof load - safety and precision

The key feature of Dynamica SecureLift round slings is the Proof Load, which we provide with each and every sling manufactured at our premises. The Proof Load ensures both a safe lifting operation and that the sling’s effective working length (EWL) is defined before the first lift, removing the need for ‘training’. It is always done in our Test Bed at our production facility.

Materials and standards

All Dynamica SecureLift slings are made with Dyneema^® or HMPE and are manufactured according to DS/EN 1492-2 + A1:2008. Every sling is made with safety in focus.

Traditional lifting slings used in many industries (for example a steel wire rope sling or polyester sling) are strong, but they are also very heavy, difficult to handle and there is always a risk of unforeseen change in the initial EWL after such slings have been used a few times.

By using SecureLift soft lifting slings made with Dyneema^® or HMPE, you will obtain cost reductions due to fewer hours spent on checking the rigging accuracy. There is less lifting equipment needed for the handling of the slings during the rigging process as SecureLift slings are so light, thereby preventing less back and hand injuries.

Ideal for demanding lifting operations

Dynamica SecureLift fibre slings are a good choice for handling loads and engineered lifting, where length accuracy, easy rigging, abrasion resistance and flexible lifting equipment are required.

Compared with the traditional slings (typically polyester slings), which absorb water, the SecureLift fibre slings do not absorb water and never get heavy or difficult to handle. This means they would not create problems during storage either.

Significant cost reduction

When using Dynamica SecureLift fibre sling, the cost reduction is significant compared with steel wire:

Time saved due to faster handling
Less handling equipment for rigging operation
Less damaged goods
Less injuries due to easy handling

Benefits of Dynamica SecureLift fibre slings

Discover the key advantages of Dynamica SecureLift fibre slings, designed for safe, reliable, and efficient lifting operations:

Lightweight
Proof Loaded – safe use guaranteed
Length accuracy – length registered after Proof Load
Exceptionally strong
High resistance against chemicals
High cut and abrasion resistance

Get more information

Are you interested in a Dynamica SecureLift round sling? Or one of our other sling solutions such as our endless slings or SafeLift round slings? Get more information or a quotation through our solution request.

Solution Request

Lifting configuration

When you choose to use Dynamica SecureLift round slings, it is important that you define the application and the configuration, so that you choose the best sling and best protection to handle and control your load. Selecting the correct configuration is as important as choosing your lifting sling.

Any load can be rigged and moved in many ways, therefore, there are a few different types of configurations that will assist you with the requirement.

Straight lift

Straight lift (vertical configuration) is the most common type. The crane hook connects to the sling at the top and the opposite eye of the sling is connected to the lifted structure. This type of lifting configuration requires protection in the bearing points only.

U-lift

The u-lift configuration distributes the load equally between the two legs of a sling. The legs must be well protected in case they are not rigged on trunnions but in contact with the cargo, as in the case of a monopole lift. The same goes for the bearing point where the sling is wrapped around the load. When using a basket configuration, the load is supported by the two parts of the sling and then connected to a crane hook.

Proof Loading

Dynamica fibre round slings' load-bearing core is constructed of parallel Dyneema^® or HMPE fibres protected by several layers of heavy-duty fabrics such as Dual Cordura or Dyneema^®. The constructional elongation of a sling is caused by the alignment of the fibres under tension. This minimal elongation is removed by Proof Loading in our Test Bed.

We Proof Load all Dynamica SecureLift slings up to 500 t in our in-house Test Bed, where - on request - a customer representative or third-party representative can be present. The Proof Load is done according to DNV-ST-N001. Slings that require higher Proof Load are tested at an external test facility.

What is the benefit of Proof Loading heavy lifting slings?

By choosing a Proof Loaded sling, you make a safe choice, as the Proof Loading is our guarantee that the heavy-duty lifting sling can carry the load it is designed for.

The Proof Loading ensures:

Stable length of the sling
The smallest possible length tolerance in case of multiple lifts
A Proof Loading certificate - part of the documentation

Proof Load example

WLL 100 t
SF 7:1
MBL 700 t
Proof Load to WLL 100 x 1.22 + 20 = 142 t

The Proof Load is significantly higher than the highest load allowed at which the sling can ever be used during lifting operations.

The precise EWL and length tolerance of Dynamica fibre slings

Dynamica Ropes has an in-house Test Bed equipped with an extensometer that allows us to measure the exact elongation of our SecureLift slings made with Dyneema^® or HMPE.

With the know-how based on the empirical testing, we can make very precise EWL calculations on SecureLift slings. This means that we are able to manufacture fibre slings with a very low EWL (effective working length) tolerance.

The EWL tolerance of our SecureLift Fibre slings is always in accordance with DS/EN 1492-2 + A1:2008.

Since we often deliver our sling solutions for engineered lifting, the EWL tolerance of maximum 1% or even less is often agreed upon for a specific SecureLift sling.

All Dynamica SecureLift slings are Proof Loaded according to DNV-ST-N001 and delivered with a Proof Load Certificate stating the EWL of the rope sling measured under tension.

What is the elongation of Dynamica SecureLift fibre sling?

Fibre slings have an extremely low elasticity compared with traditional fibres such as polyester, and the stiffness is similar to steel wire, as the SecureLift slings are Proof Loaded (trained) in our Test Bed to a value exceeding the WLL.

Constructional elongation

Constructional elongation is the elongation of a loaded fibre sling that results in compacting of the construction and alignment of the fibres and strands in the rope.

We reduce the constructional elongation during the manufacturing process as all ropes are subject to the intensive heat-stretching system, which is applied to ropes used for manufacturing of fibre slings.

Later on, the fibre slings are Proof Loaded in our 500 t Test Bed (or at external facilities, if the proof load extends 500 t) and the constructional elongation is removed from the sling.

Elastic elongation

Elastic elongation is a result of the elasticity of the fibres used in the construction of the sling. Each type of synthetic fibre has a different degree of elasticity.

fibres have 3-4 % elongation at break. Due to the applied SF (safety factor) and Proof Load, the slings are not elongating when used according to the rules. Dynamica SecureLift slings elongate by 0.8 % at WLL when used with a SF of 7:1.

How repeatable lifting operations influence the elongation of Dynamica SecureLift round slings

One of the functions built into our in-house Test Bed is the programme that lets us demonstrate how little elongation our slings have after being used time after time.

To clarify how the EWL of fibre slings changes after several lifting operations, we have Proof Loaded a SecureLift sling (WLL of 100 t) up to 50 t, 50 times. The average elongation indicates that the elongation is smaller each time the SecureLift sling has been loaded.

Need more information? Contact us.

How to cover & protect the SecureLift round sling?

SecureLift slings (according to the DS/EN 1492-2 + A1:2008 regulations for safe use of slings) should be protected at the bearing points such as crane hooks, shackles, trunnions and other types of rigging.

Soft slings should be protected from sharp edges, friction and abrasion (DS/EN 1492-2 + A1:2008), both from the load side and lifting devices such as crane hooks.

To secure a long lifetime for your SecureLift slings, it is safe and beneficial to apply a colour coded cover to protect the bearing points and to protect the sling body against abrasion in general.

Dynamica Ropes offers an extensive range of woven cover and outer sleeve solutions. See below for a short description of woven cover solutions for fibre slings:

When choosing the protection for our fibre slings, bear in mind that Dyneema^® or HMPE also has high cut resistance and is more durable than other synthetic solutions.

The sleeve protection must always be correctly positioned according to the planned lifting operation. For some lifting operations, it may be necessary to supplement this with additional protection.

Dynamica Ropes has experience manufacturing fibre soft slings for a range of different industries, and we are always ready to guide you through our different cover types, in order to find the best solution for your lifting operation.

The correct protection against damage of the sling caused by sharp edges and/or abrasion is part of the standard package from Dynamica Ropes. It can be integrated into the sling or supplied as a complementary product according to the sling design agreed with the customer.