Heavy duty anchor and heavy duty anchor

Metal dowels for heavy loads

Heavy duty anchor and heavy duty anchor: dowel

Heavy Duty Dowels are used wherever plastic dowels and other wall constructions can not get any further. The heavy duty anchor, a special form of metal dowel, is used for the most demanding tasks.

The size of heavy duty dowels and the associated Load capacity is technically almost unlimited: From a few hundred kilos to several tons, anything is possible. Under professional conditions, such as in industrial and mechanical engineering, custom-made heavy-duty anchors are used with enormous capacity.

In this article we introduce Heavy duty anchor for use in the home improvement environment before - you can also work here under professional conditions.

What to look for heavy duty anchors

Heavy load anchor are safety-relevant components. What is fastened with them must under no circumstances fall off the wall or the ceiling. Therefore, there are a multitude of quality and quality regulations and seals of quality - too many for laymen who only occasionally need a heavy-duty dowel.

The well-known from other technical devices CE mark initially says little about the actual material properties out. It simply means that the product complies with EU harmonization legislation on its affixing - it is not yet a quality judgment.

Much more important is the European Technical Approval, engl. ETA abbreviated (European Technical Approval). This states that the heavy load anchor in question has gone through a standardized test cycle. This specifies the method of installation, the load capacity and above all the substrate required for a firm hold. When buying heavy-duty dowels, especially for cheap offers from the network, It is therefore important to pay attention to ETA approval. This can usually be viewed by reputable providers on the website of the manufacturer.

Important note for the installation of heavy loads

When heavy loads fall, there can be dead and seriously injured. This not new knowledge should always be remembered when mounting with heavy-duty dowels. The nature of the substrate is the alpha and omega - usually this gives way instead of the dowel. Therefore one should vor the installation of large loads necessarily consult a specialist (craft business, architect, structural engineer).

Working principle of heavy duty dowels

Heavy duty anchor and heavy duty anchor: anchor

For heavy-duty anchors, the anchor, unlike plastic anchors, not deformed or cut. Within the metal dowel sleeve is a threaded machine screw, which opens into a conical expansion head (in the drawing on the right).

As a result of the rotational movement, the metal sleeve surrounding the thread is spread open. The conical end of the screw presses the metal halves together with great force. The screw is tightened when there is no clearance between the metal sleeves and the borehole wall. Experts speak of a traction.

The heavy duty dowel is thus clamped with high force into the hole. The clamping effect is greater, the stronger and less yielding the material is. This clarifies the unconditional need for a background check before mounting heavy loads!

Assembly of heavy duty anchors

When mounting metal dowels is a exact knowledge of the underground is absolutely necessary. For example, it makes a difference whether you drill in natural stone, artificial stone (bricks) or in concrete. It is also important whether the substrate is grouted (masonry) or continuous, for example in exposed concrete. According to the requirements of the substrate and the required tensile strength, the heavy duty anchor must therefore be carefully selected. Further details are regulated by the so-called "ETA options". These annexes to the respective ETA documents specify for which substrate the dowel is suitable.

Also, when drilling the hole for the heavy duty anchor it is important to precision: So the hole must be absolutely straight and have the correct drilling depth. Otherwise, the dowel can not develop its full tensile strength. A drill stop and a sharp drill are required. Especially with very hard surfaces such as exposed concrete a hammer drill compared to a percussion drill is clearly in the advantage, with a hammer must be expended significantly less force.

Possible applications for heavy-duty dowels

Heavy duty dowels can be used in the DIY sector especially for wall mounting heavy furniture use. But also in the kitchen, in the local workshop or in the garage firm connections provide a reassuring sense of security. They may also be useful for attaching playground equipment, such as e.g. at a swing or a climbing wall.

However, the following is always true:

Every dowel only holds as good as the wall it is in!

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Video Board: Heavy Duty Expanding Drywall Anchor Strength Test - TEST TUESDAY! [141]