This test applies to the equipment's own rotating elements.

A compliant test report should include the following sections:

If you are reviewing a supplier’s MIL-STD-167-2A PDF test report, ensure the report issuance date is within the last five years; older reports may reference superseded paragraphs.

The endurance portion of the test lasts a minimum of two hours per axis (vertical, transverse, and longitudinal) unless resonances dictate extended dwells. Total test time typically ranges from 6 to 12 hours depending on equipment complexity.