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The legislative information contained on this web site is my interpretation of the law based on many years in the health and safety business. A definitive interpretation can only be given by the courts. I will therefore not be held responsible for any accident/incident/prosecution arising as a consequence of anyone using any information obtained from this web site.

Forklift stability triangle. Centre of gravity

stability triangle 1This shows a plan view of a typical four-wheel forklift truck. Notice the triangle shown in red. This triangle is measured from the centre of the rear axle to the centre of the front wheel tyres. The reason that the centre of the rear axle is used is because the axle is only fastened to the chassis of the truck in the centre and is allowed to articulate in the case of four-wheel trucks.

The idea is to keep the centre of gravity, which is shown in blue, within the confines of the stability triangle. Of course as an operator it is not possible to see what's happening with this stability triangle and so instead it is necessary to learn of the conditions that may cause the centre of gravity to fall outside of this triangle.


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