Capacity calculations
Work out a planning figure for residual capacity or load centre before you ask for a quote. The server runs the forklift formula. A sentence is read for the plate figures, and a model can help read a harder sentence when Eteq has connected one. The model does not choose the kilograms.
How the formula works
The truck is rated for a moment about the front axle. An attachment uses some of that moment before the load is added. The capacity that remains is:
Residual capacity = (Q × (D + LL) − W × (ET + LL)) ÷ (D1 + ET + LL)
- Q, rated capacity
- Kilograms on the capacity plate.
- D, rated load centre
- The centre that plate was rated at, in millimetres.
- LL, lost load
- Horizontal distance from the front-axle centreline to the carriage face.
- W, attachment weight
- The attachment, including its hoses and mounting, in kilograms.
- ET, effective thickness
- Carriage face to the face that touches the load.
- D1, actual load centre
- From that load face to the centre of gravity. For a uniform load it is half the length.
A worked check
A 2 500 kg truck rated at 500 mm, with 400 mm lost load, a 450 kg attachment, 120 mm effective thickness and a 600 mm load centre:
(2 500 × (500 + 400) − 450 × (120 + 400)) ÷ (600 + 120 + 400) = 1 800 kg.
The page rounds the headline to the nearest 10 kg. Without the lost load, a simple rated-centre ratio is only a rough check, and it is the wrong check once an attachment is fitted.
What this page does not guess
- Feeler and Zoomlion model capacity. The quote names the model against the duty.
- Tyre-handler rating. The published Saur range covers tyres up to 16,000 kg, and the carrier still needs its own residual check.
- A re-plate. Only the capacity plate and the written quote from Eteq set that.