As can be seen from the FE calculation, high tensile stresses only occur in the areas of the elbow of the fork arm which are coloured in yellow and green. A very low static load occurs on the material in the middle of the steel profile (blue area).
Each fork arm type is subjected to a load alternation test with 1.5 million load alternations at a 40% overload. The fork arms are then tested at 4 times the nominal load in the maximum load test. No plastic deformation may occur here. Furthermore, a cracking test is also carried out. This is our own high requirement.