Calculation of Lifetime of Precision Linear Module

When the KK linear module industrial robot is under load and moves, the surface of the bead groove and the steel ball are continuously subjected to cyclic stress. Once the critical value of rolling fatigue is reached, the contact surface will start to produce fatigue damage, and in some parts.

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The peeling phenomenon of fish scale-like flakes occurs on the surface, which is called surface peeling. The life is defined as the total running distance until the surface of the bead track and the steel ball are peeled off due to material fatigue.

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