In Part 1, the authors presented a three-degrees-of-freedom (3-DOF) model of an in-contact headslider/disk interface (HDI) system and the equations of motion of the in-contact headslider considering the meniscus force. Dynamic characteristics of the in-contact headslider over sinusoidal disk surface were made clear. In Part 2, using the equations of motion obtained in Part 1, the calculation results for the disk with random undulation and design conditions for the in-contact HDI system are described.

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