Komatsu

Forklift Operation - Maintaining the Stability Triangle
Amongst the key basic discussions with lift trucks is taking into account the stability triangle and the center of gravity. One of the most difficult things for a lift truck operator to judge is the importance of maintaining their center of gravity within their stability triangle.

The Stability Triangle
A forklift has a 3-point suspension system. The stability triangle is formed when imaginary lines are drawn between these three points. The operator needs to make sure that the center of gravity, which is created, together with the machine and his load, remains within the stability triangle to be able to guard against the forklift losing balance and tipping over.

Centers of Gravity
How do you define the center of gravity? When it comes to lift truck operation, we must be concerned not only with the center of gravity of the load being lifted but as well with the combined center of gravity. This comprises the lift truck and the load it is picking up.

The load center is defined as the center of gravity of the load. In a uniform load situation, like a bale for example, the load center can be more easily detected. Like for instance, a uniform load on a 48 inch long pallet, would have the load center at 24 inches. This load center is really common for a lot of lift trucks with smaller capacity. Then again, if a load is not properly centered, like with items that are not symmetrical, perhaps an engine for instance, then a lot of care and caution have to be taken in order to estimate the center of gravity.

In addition, the lift truck has a center of gravity of its own. This shifts every time the lift truck carries a load. Once the load is raised, the center of gravity moves forward. A lot of care should be taken to be able to maintain the center of gravity within the stability triangle of the forklift. This occurs by following the numbers and not carrying over the maximum allowable, given the center of the load. What's more, the load center should be considered. Be aware that whenever raising the load, the load center moves forward as well.

If the stability triangle is respected and the center of gravity is maintained, the operator and all workers and pedestrians close by can stay much safer. This will truly ensure a balanced machinery, balanced loads and safer for everybody.

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