Wire rope-slings.

The steel wire rope-slings is part of the basic equipment of every company in which loads are lifted and transported. It is used wherever lightweight, inherently rigid and hard-wearing lifting gear is required! They are robust, durable and can be adapted to your requirements with different rope-sling variants and rope assemblies. At Dolezych, you can buy wire-ropes by the metre, load slings, rope-suspensions and grommets that are characterized by their quality and durability.

Selecting rope-slings: how to find the right rope for you

Rope-slings must be selected so that their type, length and method of attachment to the load are suitable for the upcoming transport so that they can be safely picked up without unintentional movement.

Note: Incorrect selection of load capacity and/or sling type can cause the rope-sling to break!

Rope-slings: variants and standards

The manufacture of ropes is regulated by DIN EN 13414. The European standard differentiates between rope-slings according to the type of core and the type of end connection.

Variants of rope-slings: your options

There are eight rope-sling variants with different load capacities:

• Rope with fiber core FC in pressed version with aluminum or steel crimping
• Rope with steel core IWRC in pressed version with aluminum or steel crimping
• Spliced end connection with fiber core FC
• Spliced end connection with steel core IWRC
• Swaged cable lay ropes (steel core stranded around a central fiber core)
• Spliced cable lay ropes (steel core stranded around a central fiber core)
• Endless grommets with fiber core FC
• Endless grommets with steel core IWRC

Summarized:

1. When using a steel core, the diameter of the rope-sling can be reduced by one nominal size.
2. When using cable lay ropes, the rope must be one to two nominal sizes thicker in order to achieve the same load-bearing capacity of the standard rope with fiber core/pressed.
3. Compared to a single-strand rope, the load of grummets is distributed over two load-bearing strands, which means that the diameter of the single rope can be significantly reduced once again.

Assuming a load of 4.5 t, for example, you have the following options:

• Rope type 1 with fiber core, pressed 22 mm Ø, WLL 5000 kg
• Rope type 2 with steel core, pressed 20 mm Ø, WLL 4600 kg
• Rope type 3 with fiber core, spliced, 24 mm Ø, WLL 5600 kg
• Rope type 4 with steel core, spliced, 22 mm Ø, WLL 5000 kg
• Rope type 5 cable lay, pressed, 27 mm Ø, WLL 4800 kg
• Rope type 6 cable lay, spliced, 30 mm Ø, WLL 5600 kg
• Rope type 7 grommet, fiber core, 18 mm Ø, WLL 4650 kg
• Rope type 8 grommet, steel core, 18 mm Ø, WLL 4900 kg

What is regulated by which rope-sling standard?

• DIN EN 13414-1: Steel wire-rope-slings - for general lifting purposes
• DIN EN 13414-2: Steel wire-rope-slings - Information to be supplied by the manufacturer for use and maintenance
• DIN EN 13414-3: Steel wire-rope-slings - Grummets and cable slings
• DIN EN 13411 ff: Terminations (including material requirements, manufacturing methods)

Press connections differ in terms of the material

As standard, wire-rope-slings are designed with crimp connections made from wrought aluminum alloys. For hot applications or where there is a risk of wear, we recommend the use of steel compression clamps.

The standard crimping is cylindrical. On request, the crimping clamp can be rounded towards the middle of the rope (old DIN 3093, type B).

Even better is the cylindrical-tapered crimping clamp (old type C), which is tapered towards the middle of the rope. This prevents snagging as far as possible when the rope is pulled through under load.

Ropes made of stainless steel are preferably crimped with copper or stainless steel grips.

What you need to consider when working with rope-slings

To guarantee safety when working with rope-slings and increase the longevity of your ropes, you need to pay attention to a few things, such as protection against sharp edges and the permitted temperature range.

Small rope radii of curvature require load capacity reductions

Depending on the radius of curvature, you must factor in reductions in the load-bearing capacity of your rope-sling. For example, if the bolt diameter D is only twice as large as the rope diameter d, you have to reckon with a remaining load capacity of only 65%! As a general rule, the smaller the rope bend radius, the greater the reduction in the original load capacity.

Protection from sharp edges

Rope-slings are not suitable for sharp-edged loads. Use additional corner protectors for this!

An edge for a rope-sling is always sharp if the radius (r) of the contact surface is smaller than the diameter (d) of the rope-sling.

The nominal length L is always measured from the suspension link to the base of the hook or from thimble to thimble.

Use of rope-slings in different temperature ranges

The permissible operating temperatures for rope-slings depend on the rope end connection and the type of rope core. You can find more information in our bestseller catalog.

Rope assembly: rope-slings assembled according to your requirements

When assembling ropes, you can select various elements and specifications for your rope-slings. You can find more information in our bestseller catalog. You can conveniently request your rope-slings using our inquiry form.

Thimble

• According to EN 13411-1
• For protecting ropes at the attachment point
• Nominal size of the thimble matched to the rope diameter
• Material: steel

Splice

• According to DIN EN 13411-2
• Break-resistant, durable, non-detachable connection
• Splice connections are very flexible, i.e. can be subjected to bending at any point
• Mainly for problems with rigid rope end connections, larger rope diameters and increased safety requirements
• To avoid hand injuries, the connection can be additionally protected with heat-shrink tubing, adhesive tape or wire taping

Flemish eye

• According to EN 13411-3
• Laid rope loop
• Press connection
• Convenient bundling or pulling through under loads thanks to the slim, conical steel crimp clamp
• No snagging due to the conical crimp clamp
• Suitable for higher temperatures
• Minimum loop length = 20 x nominal rope Ø

Bent back loop

• In accordance with EN 13411-3
• Industry standard for a long time
• For general lifting purposes
• Mainly as single or multi-leg slings
• With or without thimble
• For lifting in a lanyard or for higher safety requirements, choose form C
• Minimum loop length = 15 x nominal rope Ø

Aluminum clamps

• Shape A: Cylindrical
• Shape B: Cylindrical-rounded
• Shape C: Cylindrical-tapered

Single-strand rope-slings

• According to EN 13414-1
• Safe and efficient working
• Many possible combinations for every application
• Integrated end fittings without additional connecting elements
• Intrinsically rigid
• Inexpensive
• Available in any length

Grommet: Endlessly laid rope-sling for heavy-duty applications

Grommets are endless, highly flexible rope-slings in accordance with DIN EN 13414-3, which are used in particular for heavy-duty applications. Rope diameters of over 100 mm are not uncommon for these heavy-duty specialists.