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Originally Posted by PAB_OH
Figuring lift capacity should be pretty easy for a cylinder. Take the bore diameter/2 square that and multiply times pi (3.14). Multiply that times 2 (2 cylinders). That will be your effective area.
Multiply the area times your loaders relief setting (2200 psi?). That will tell you how many lbs. force you can lift.
This assumes that all the other components of the cylinder are engineered correctly. Be careful, the lift arms themselves are designed for a certain load. I'm sure you know it but you can have the largest cylinders in the world but if the superstructure won't support the load you'll have pretzels for lift arms.
Good luck!
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That is well and true probably, ( I did not proof it), but that only tells you the forces at that point, not at the pivot pin of the loader or any other point in space.