Calculate precise stress limits and balancing tolerances.
Dictates Type I (Environmental) vibrations caused by the vessel moving through water, and Type II (Internally Excited) vibrations produced by generic unbalanced rotating machinery.
This article provides a comprehensive overview of MIL-STD-167-2A, its requirements, types of testing, and how to access the official PDF documentation. What is MIL-STD-167-2A?
It ensures components can survive high-stress environments. mil-std-167-2a pdf
This section defines exactly what types of equipment fall under the jurisdiction of 167-2A. It generally applies to all machinery installed on U.S. Navy surface ships and submarines that generate or are exposed to reciprocating or torsional forces. 2. Applicable Documents
Equipment that does not conform to standards risks premature failure, mechanical fatigue, and catastrophic breakdowns during critical naval operations. The primary goals of the MIL-STD-167-2A guidelines are to:
When an operational vibration coincides with equipment structural natural frequencies, the resulting resonance amplifies mechanical stress. MIL-STD-167-2A mandates that equipment remain functional after extended exposure to these critical frequencies. Calculate precise stress limits and balancing tolerances
To access the official MIL-STD-167-2A(SH) document in PDF format, you should use official US Government repositories. Navigate to assist.dla.mil. Search the ID: Type 167-2 in the "Document ID" field.
Testing for lateral and longitudinal vibrations.
Manufacturers must verify their equipment's resilience through rigorous testing protocols to receive certification. Testing typically involves: What is MIL-STD-167-2A
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| Standard | Focus | Typical Use Case | | :--- | :--- | :--- | | | Shipboard environment (low freq vibration) | Pumps, motors, hull-mounted electronics | | MIL-STD-810H (Method 514.8) | General military environmental vibration | Ground vehicles, aircraft, portable gear | | MIL-STD-901D | High-impact shock (barge or lightweight test) | Combat systems, valve operators, critical switches | | NAVSEA 0908-LP-507-7000 | Test sequencing for naval ship systems | Integration of above standards |
If your equipment is destined for a submarine, additional considerations apply. Submarines often reference MIL-STD-167-2A but with tighter amplitude limits due to acoustic stealth requirements.