Lateral loads should be avoided, as the product was not designed for this purpose. If lateral loads are unavoidable, the following reductions in working load limit (WLL) must be taken into account:
|45°||Reduction in WLL in the event of lateral loads, change in load|
|0°||100% of the original working load limit (WLL)|
|45°||70% of the original working load limit (WLL)|
|90°||50% of the original working load limit (WLL)|
The load in alignment with the middle axis of the shackle body loads the pin at an angle of 90° degrees (relative to the centre axis of the pin). The loading angles in the table are the deviating angles from a load along the centre axle of the shackle body. If you use a shackle together with several legs you should pay careful attention to the angle between the legs. If this angle increases, the load on each individual leg increases and accordingly on each shackle from which they hang.
If a shackle is used to connect two legs with the hook of a lifting device a bow shackle must be used, whereby the legs must be positioned in the shackle stirrup and the hook at the shackle pin. The angle between the legs must not exceed 120°. To avoid eccentric loading of the shackle, a loose intermediate piece can be positioned on both sides of the shackle pin. Do not try to reduce the size of the shackle opening by welding discs or other intermediate pieces onto the insides of the shackle eye or to bend the opening so that it is smaller, as this has a negative effect on the mechanical properties of the shackle.
If a shackle is used to secure the top block of a series of rope blocks, the loading of the shackle increases by the value of the resulting tensile load on lifting.
Avoid applications in which the shackle pins rotate due to movements (e.g. of the load or of the rope) and could possibly become unscrewed.
If such an application is necessary or if the shackles are to be installed for a lengthy period or maximum pin safety is necessary, use a shackle with a safety pin, nut and cotter pin.
Shackles should not be immersed in solutions containing acid or exposed to acidic fumes or chemicals, as these can be potentially harmful for the shackle. Please be aware that these types of chemicals are used in certain production processes.