Main theme of final thesis is explanation of material fatigue and its theory of testing. In the beginning, thesis explains current status of testing machine, theory of fatigue, methods of lifespan testing and issue of rolling contact. As next step thesis deals with construction design of various parts of fatigue tester. In conclusion main theme of thesis is material fatigue, its testing, the draft of construction design of fatigue testing machine with rolling contact, calculations of each components and drawing documents created in CAD systems.