On this page you will find frequently asked questions from our customers about chain slings. If you are concerned about a question that is not answered here, please do not hesitate to ask us. We will be happy to answer them by mail.
Grade 8 and grade 10 chain slings are among the most important slings. They are used in a wide variety of applications to lift heavy loads or goods (e.g. on construction sites or in industry).
Sling shortening hooks are always used in connection with chain suspensions. The variably usable shortening hooks with safety device save components and shorten sling and lashing chains directly in the working area.
Chain slings are available from Dolezych in grades 6, 8, 10 and 12.
Other grades on request.
Please request chain suspensions for special applications from your Dolezych team!
The difference between the individual grades of chain slings is that the load capacity increases with increasing grade while the material thickness remains the same.
The grade of a chain, as well as its components (hooks, connecting links, shorteners, etc.) can be recognized by the grade labels 8, 10 and 12.
The tilt angle is determined by the degrees between an imaginary vertical line and the chain itself. The load carrying capacity of a chain sling changes depending on the respective tilt angle of a suspended load: the greater the tilt angle, the lower the load capacity. Tilt angles exceeding 60° are not permitted! If different tilt angles occur with multiple leg chain slings (asymmetrical load distribution), only the load capacity of the leg with the largest tilt angle may be used as a basis. In individual cases, shortening hooks and compensating rockers may be helpful.
In contrast to the tilt angle, the spread angle measures the angle between two chain legs (maximum 120°).
The working length L describes the length of a chain sling plus its fitting parts, as shown in the following diagram.
The hook openings must always point outwards to prevent the load from being unhooked unintentionally.
Yes, the unloaded chain legs are hung back into the suspension link/set. In this case the permissible WLL is reduced to that of a single leg chain.
Certificate of Compliance DIN EN 10204-2.1 and Declaration of Conformity are automatically included in the scope of delivery. A chain file card is issued in the course of our annual UVV inspection.
Further documents on request.
A chain sling is always identified by a load capacity label and by Dolezych additionally with an UVV inspection plate.
In this case, the sling chain is downgraded to grade 2 (DIN 685) and must be inspected by an expert in due time. Do not hesitate to contact us by mail. We are happy to answer your questions.
Basically, a chain sling must be inspected by a qualified person before it is used for the first time. In addition, DGUV 100-500, item 2.8 prescribes regular inspections at intervals of no more than one year by an expert for lifting equipment. Depending on the conditions of use inspections may also be required at shorter intervals than one year. This applies, for example, in the case of frequent use, increased wear, corrosion or heat effects or if increased susceptibility to failure is to be expected. Round steel link chains used as slings must be subjected to a special inspection for the absence of cracks at intervals of a maximum of three years (or a maximum of two years in Austria). We carry out this crack test with an electromagnetic crack testing device in our laboratory or with our test trolley at your site.
You are interested in our inspection service? Do not hesitate to contact us by mail.
No, the use is not permitted according to the BG rules and DIN standards.
The following table shows the load carrying capacity per grade in relation to temperature.
|Grade 6||DoKett Edelstahl||100%||75%|
|-20°||-10°||0° bis +100°||+150°||+200°||+250°|
The applicable regulations and technical rules for chain slings can be read in detail in the following works:
Special regulations beyond this must be observed, e.g. for the transport of dangerous goods.