Machine for testing centrifugal load of bearing

A machine for testing a centrifugal load of a bearing including an outer race member, comprising:

• a supporting frame including a sun ring, and
• a rotational main shaft including mounting portions for mounting bearings to be tested, said mounting portions each including a mounting shaft for mounting a bearing to be tested and a supporting bracket for supporting said mounting shaft,
• said mounting portions being fixedly projected integrally from an outer peripheral portion of said rotational main shaft at equal intervals in a circumferential direction,
• each said mounting shaft being arranged in its respective said supporting bracket in parallel with the rotational main shaft in such a manner that a part of an outer peripheral surface of said outer race member is projected radially outwardly from said supporting bracket,
• said sun ring being concentrical with said rotational main shaft and surrounding said mounting portions,
• an inner peripheral surface of said sun ring being used as a track to be rolled with the outer race members of the bearings to be tested.